运行Akka不需要定义配置，相当大的默认值已经配置好了。您可以需要修改设置来改变默认的行为或适应特定的运行时环境。典型的例子你可以修改的设置:
- 日志级别和日志后台
- 远程功能
- 消息序列化
- 定义路由
- 调优的调度程序
Akka使用类型安全配置库，它也可能是一个不错的选择在应用程序或库的配置不论有或没有Akka构造。这个库是用Java实现的外部依赖，应该看一看它的文档(特别是ConfigFactory)，这是只在以下总结。
警告
如果你使用Scala的REPL Akka 2.9.x系列，不用提供自己的类加载器ActorSystem,开始“-Yrepl-sync”工作的REPL REPL提供上下文类加载器的不足。
配置在哪里读的
Akka的ActorSystem的实例所有配置，换句话说从外表看Actor系统仅仅是配置信息的消费者。构建一个Actor系统，你能通过一个配置对象，在第二种情况下通过ConfigFactory.load()（正确的类装入）。这意味着默认是所有应用程序来解析，application.conf, application.json和application.properties在根类路径下详情请参阅上述文档。然后Actor系统合并配置资源在类路径的根形成回退的配置，即它在内部使用。
1. appConfig.withFallback(ConfigFactory.defaultReference(classLoader))
代码不包含默认值的哲学,而是依赖于他们的存在reference.conf 提供的问题。
最高优先级给覆盖给定的系统属性,看到HOCON规范(底部)。还值得注意的是，application:可能用config.resource资源属性(更多内容，请参考配置文档)。
注意
如果您正在编写一个Akka应用程序,让你配置的application.conf的类跟路径上。如果您正在编写一个Akka-based库,使其配置 reference.conf 在Jar文件中。
JarJar, OneJar, Assembly 或其它jar-bundler使用时机
警告
Akka的配置方法在很大程度上依赖于每个模块/ jar的概念有自己的reference.conf文件，所有这些将被发现的配置和装载。不幸的是这也意味着如果你把多个jar /合并到相同的jar,需要合并所有reference.conf。否则默认值会丢失和Akka会失去功能。
如果您正在使用Maven打包应用程序,您还可以使用Apache Maven插件支持资源合并所有的reference.conf及其在构建类路径中。
插件配置可能看起来像这样:
1. <plugin>
2. <groupId>org.apache.maven.plugins</groupId>
3. <artifactId>maven-shade-plugin</artifactId>
4. <version>1.5</version>
5. <executions>
6. <execution>
7. <phase>package</phase>
8. <goals>
9. <goal>shade</goal>
10. </goals>
11. <configuration>
12. <shadedArtifactAttached>true</shadedArtifactAttached>
13. <shadedClassifierName>allinone</shadedClassifierName>
14. <artifactSet>
15. <includes>
16. <include>*:*</include>
17. </includes>
18. </artifactSet>
19. <transformers>
20. <transformer
21. implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
22. <resource>reference.conf</resource>
23. </transformer>
24. <transformer
25. implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
26. <manifestEntries>
27. <Main-Class>akka.Main</Main-Class>
28. </manifestEntries>
29. </transformer>
30. </transformers>
31. </configuration>
32. </execution>
33. </executions>
34.</plugin>
自定义application.conf
自定义的 application.conf 可以看起来象这样：
1. # In this file you can override any option defined in the reference files.
2.# Copy in parts of the reference files and modify as you please.
3.
4.akka {
5.
6. # Loggers to register at boot time (akka.event.Logging$DefaultLogger logs
7. # to STDOUT)
8. loggers = ["akka.event.slf4j.Slf4jLogger"]
9.
10. # Log level used by the configured loggers (see "loggers") as soon
11. # as they have been started; before that, see "stdout-loglevel"
12. # Options: OFF, ERROR, WARNING, INFO, DEBUG
13. loglevel = "DEBUG"
14.
15. # Log level for the very basic logger activated during ActorSystem startup.
16. # This logger prints the log messages to stdout (System.out).
17. # Options: OFF, ERROR, WARNING, INFO, DEBUG
18. stdout-loglevel = "DEBUG"
19.
20. # Filter of log events that is used by the LoggingAdapter before
21. # publishing log events to the eventStream.
22. logging-filter = "akka.event.slf4j.Slf4jLoggingFilter"
23.
24. actor {
25. provider = "cluster"
26.
27. default-dispatcher {
28. # Throughput for default Dispatcher, set to 1 for as fair as possible
29. throughput = 10
30. }
31. }
32.
33. remote {
34. # The port clients should connect to. Default is 2552.
35. netty.tcp.port = 4711
36. }
37.}
包含的文件
有时它可能是有用的,包括另一个配置文件,例如,如果您有一个 application.conf与环境独立设置,然后覆盖一些设置为特定的环境。
指定特定的系统属性-Dconfig.resource=/dev.conf会载入dev.conf文件, 它包含了application.conf。
dev.conf:
1. include "application"
2.
3.akka {
4. loglevel = "DEBUG"
5.}
更高级的包括和替换机制解释HOCON规范。
日志配置
如果系统或akka.log-config-on-start 设置为开，然后Actor启动后完整的配置记录在信息层面系统。这是有用的,当你不确定的哪个配置在使用。
如果有疑问,您也可以轻松地使用它们之前或之后检查配置对象来构造一个Actor系统:
1.Welcome to Scala version 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0).
2.Type in expressions to have them evaluated.
3.Type :help for more information.
4.
5.scala> import com.typesafe.config._
6.import com.typesafe.config._
7.
8.scala> ConfigFactory.parseString("a.b=12")
9.res0: com.typesafe.config.Config = Config(SimpleConfigObject({"a" : {"b" : 12}}))
10.
11.scala> res0.root.render
12.res1: java.lang.String =
13.{
14. # String: 1
15. "a" : {
16. # String: 1
17. "b" : 12
18. }
19.}
在注解前每一项给设置的起源的详细信息(文件和行号)加上可能的注解也在场，如在参考配置。设置与参考合并和解析的Actor系统可以显示是这样的:
1.final ActorSystem system = ActorSystem.create();
2.System.out.println(system.settings());
3.// this is a shortcut for system.settings().config().root().render()
关于类装载器
配置文件几个地方的可以指定完全限定类名的被Akka实例化。这是通过使用Java反射，进而使用一个类 ClassLoader。在这样一种环境下并不是像应用程序容器或OSGi绑定那么简单。当前的Akka方法是,每个ActorSystem实现存储当前线程的上下文类加载器(如果可用,否则只是自己的装载机在this.getClass.getClassLoader)为所有反射访问和使用。这意味着把Akka引导类路径将从陌生的地方产生NullPointerException:这是不支持的。
应用程序特定设置
配置还可以用于特定于应用程序的设置。一个典型应用是将这些设置在一个扩展,如:
- Scala API:
- Java API:
配置多个ActorSystem
如果你有多个ActorSystem(或者您正在编写一个库,有一个ActorSystem可能独立于应用程序的)您可能想分离每个系统的配置。
鉴于ConfigFactory.load()合并所有资源匹配的名字从整个类路径,它是简单的使用功能和区分Actor系统层次结构内的配置:
1. myapp1 {
2. akka.loglevel = "WARNING"
3. my.own.setting = 43
4.}
5.myapp2 {
6. akka.loglevel = "ERROR"
7. app2.setting = "appname"
8.}
9.my.own.setting = 42
10.my.other.setting = "hello"
1.val config = ConfigFactory.load()
2.val app1 = ActorSystem("MyApp1", config.getConfig("myapp1").withFallback(config))
3.val app2 = ActorSystem("MyApp2",
4. config.getConfig("myapp2").withOnlyPath("akka").withFallback(config))
两个样品展示不同的“lift-a-subtree”技巧:在第一种情况下,配置可以从Actor系统内是这样的
1.akka.loglevel = "WARNING"
2.my.own.setting = 43
3.my.other.setting = "hello"
4.// plus myapp1 and myapp2 subtrees
而在第二个,只有“akka”子树了,下面的结果
1.akka.loglevel = "ERROR"
2.my.own.setting = 42
3.my.other.setting = "hello"
4.// plus myapp1 and myapp2 subtrees
注意
配置库是很强大的，涵盖了所有功能范围。特别是未涉及如何在其他文件包括其他配置文件(看一个小例子Including files)和复制的部分配置树的路径替换。
以编程方式指定并解析配置在实例化ActorSystem时。
1.import akka.actor.ActorSystem
2.import com.typesafe.config.ConfigFactory
3. val customConf = ConfigFactory.parseString("""
4. akka.actor.deployment {
5. /my-service {
6. router = round-robin-pool
7. nr-of-instances = 3
8. }
9. }
10. """)
11. // ConfigFactory.load sandwiches customConfig between default reference
12. // config and default overrides, and then resolves it.
13. val system = ActorSystem("MySystem", ConfigFactory.load(customConf))
从自定义位置读取配置
你可以用代码或使用系统属性更换或补充application.conf。
如果使用ConfigFactory.load()（Akka默认的）用-Dconfig.resource=位置, -Dconfig.file=位置, 或 -Dconfig.url=位置.替换application.conf 。
从内部替换时指定为-Dconfig.resource等，可以用application.{conf,json,properties}等在需要继续用时包含它们。设置在指定"application"前出现，则会被覆盖；之后出现则覆盖原设置。
在代码中,有许多定制选项。
有些用ConfigFactory.load()这些允许您指定要夹在系统属性(覆盖)和默认值(从reference.conf),取代通常application.{conf,json,properties}以及-Dconfig.file
最简单的变体ConfigFactory.load()接受一个资源基于名字(代替application)，myname.conf, myname.json, and myname.properties用来代替application.{conf,json,properties}.
最灵活的变体需要一个配置对象,您可以使用任何方法装载ConfigFactory。例如你可以把配置字符串在代码中使用ConfigFactory.parseString()或者你可以做个图和ConfigFactory.parseMap(),或者你可以加载一个文件。可以整合自定义配置与通常的配置,例如:
1.// make a Config with just your special setting
2.Config myConfig =
3. ConfigFactory.parseString("something=somethingElse");
4.// load the normal config stack (system props,
5.// then application.conf, then reference.conf)
6.Config regularConfig =
7. ConfigFactory.load();
8.// override regular stack with myConfig
9.Config combined =
10. myConfig.withFallback(regularConfig);
11.// put the result in between the overrides
12.// (system props) and defaults again
13.Config complete =
14. ConfigFactory.load(combined);
15.// create ActorSystem
16.ActorSystem system =
17. ActorSystem.create("myname", complete
在处理配置对象时,记住,有三个“层”内容:
- ConfigFactory.defaultOverrides() (系统属性)
- 应用设置
- ConfigFactory.defaultReference() (reference.conf)
正常的目标是定制中间层而另外两个独立设置。
- ConfigFactory.load() 装载整个堆栈
- 覆盖 ConfigFactory.load() 使用你特定的设置
- ConfigFactory.parse()变量载入单个文件或资源
使用两层堆积override.withFallback(fallback)，在顶层保持系统设置（(defaultOverrides()）以及在底层reference.conf (defaultReference())
记住,你可以经常添加另一个声明包含在 application.conf 而不是编写代码。包括顶层application.conf被其他application.conf覆盖 ,而底部将会覆盖前面的东西。
Actor部置配置
部署特定的设置akka.actor.deployment这一节。在部署部分可以包括调度，邮箱，路由器设置，和远程部署。配置这些特性相对应的章节详细描述的主题。一个例子可能是这个样子:
1. akka.actor.deployment {
2.
3. # '/user/actorA/actorB' is a remote deployed actor
4. /actorA/actorB {
5. remote = "akka.tcp://sampleActorSystem@127.0.0.1:2553"
6. }
7.
8. # all direct children of '/user/actorC' have a dedicated dispatcher
9. "/actorC/*" {
10. dispatcher = my-dispatcher
11. }
12.
13. # all descendants of '/user/actorC' (direct children, and their children recursively)
14. # have a dedicated dispatcher
15. "/actorC/**" {
16. dispatcher = my-dispatcher
17. }
18.
19. # '/user/actorD/actorE' has a special priority mailbox
20. /actorD/actorE {
21. mailbox = prio-mailbox
22. }
23.
24. # '/user/actorF/actorG/actorH' is a random pool
25. /actorF/actorG/actorH {
26. router = random-pool
27. nr-of-instances = 5
28. }
29.}
30.
31.my-dispatcher {
32. fork-join-executor.parallelism-min = 10
33. fork-join-executor.parallelism-max = 10
34.}
35.prio-mailbox {
36. mailbox-type = "a.b.MyPrioMailbox"
37.}
注意
部署部分为一个特定的Actor它的路径相对于/user
您可以使用星号作为actor的路径部分通配符匹配,所以您可以指定/*/sampleActor 它匹配所有的层级。另外请注意：
- 使用通配符放在最后匹配所有Actor在当前层次上：
/someParent/* - 使用两个通配符放在最后匹配所有Actor，将遍历所有了子级：
/someParent/** - 没有通配符的总有更高优先级，单个通配符的优先级总比两个的高：所以
/foo/bar比更高/foo/*，而它的优先级更高于/foo/**，只有最高优先级的匹配才会被使用。 - 通配符不能用作路径的一部分，如:
/foo*/bar, /f*o/bar等.
注意
双通配符只能放置成最后
参考配置清单
每个Akka模块参考配置文件的默认值
akka-actor
1. ####################################
2.# Akka Actor Reference Config File #
3.####################################
4.
5.# This is the reference config file that contains all the default settings.
6.# Make your edits/overrides in your application.conf.
7.
8.# Akka version, checked against the runtime version of Akka. Loaded from generated conf file.
9.include "version"
10.
11.akka {
12. # Home directory of Akka, modules in the deploy directory will be loaded
13. home = ""
14.
15. # Loggers to register at boot time (akka.event.Logging$DefaultLogger logs
16. # to STDOUT)
17. loggers = ["akka.event.Logging$DefaultLogger"]
18.
19. # Filter of log events that is used by the LoggingAdapter before
20. # publishing log events to the eventStream. It can perform
21. # fine grained filtering based on the log source. The default
22. # implementation filters on the `loglevel`.
23. # FQCN of the LoggingFilter. The Class of the FQCN must implement
24. # akka.event.LoggingFilter and have a public constructor with
25. # (akka.actor.ActorSystem.Settings, akka.event.EventStream) parameters.
26. logging-filter = "akka.event.DefaultLoggingFilter"
27.
28. # Specifies the default loggers dispatcher
29. loggers-dispatcher = "akka.actor.default-dispatcher"
30.
31. # Loggers are created and registered synchronously during ActorSystem
32. # start-up, and since they are actors, this timeout is used to bound the
33. # waiting time
34. logger-startup-timeout = 5s
35.
36. # Log level used by the configured loggers (see "loggers") as soon
37. # as they have been started; before that, see "stdout-loglevel"
38. # Options: OFF, ERROR, WARNING, INFO, DEBUG
39. loglevel = "INFO"
40.
41. # Log level for the very basic logger activated during ActorSystem startup.
42. # This logger prints the log messages to stdout (System.out).
43. # Options: OFF, ERROR, WARNING, INFO, DEBUG
44. stdout-loglevel = "WARNING"
45.
46. # Log the complete configuration at INFO level when the actor system is started.
47. # This is useful when you are uncertain of what configuration is used.
48. log-config-on-start = off
49.
50. # Log at info level when messages are sent to dead letters.
51. # Possible values:
52. # on: all dead letters are logged
53. # off: no logging of dead letters
54. # n: positive integer, number of dead letters that will be logged
55. log-dead-letters = 10
56.
57. # Possibility to turn off logging of dead letters while the actor system
58. # is shutting down. Logging is only done when enabled by 'log-dead-letters'
59. # setting.
60. log-dead-letters-during-shutdown = on
61.
62. # List FQCN of extensions which shall be loaded at actor system startup.
63. # Library extensions are regular extensions that are loaded at startup and are
64. # available for third party library authors to enable auto-loading of extensions when
65. # present on the classpath. This is done by appending entries:
66. # 'library-extensions += "Extension"' in the library `reference.conf`.
67. #
68. # Should not be set by end user applications in 'application.conf', use the extensions property for that
69. #
70. library-extensions = ${?akka.library-extensions} []
71.
72. # List FQCN of extensions which shall be loaded at actor system startup.
73. # Should be on the format: 'extensions = ["foo", "bar"]' etc.
74. # See the Akka Documentation for more info about Extensions
75. extensions = []
76.
77. # Toggles whether threads created by this ActorSystem should be daemons or not
78. daemonic = off
79.
80. # JVM shutdown, System.exit(-1), in case of a fatal error,
81. # such as OutOfMemoryError
82. jvm-exit-on-fatal-error = on
83.
84. actor {
85.
86. # Either one of "local", "remote" or "cluster" or the
87. # FQCN of the ActorRefProvider to be used; the below is the built-in default,
88. # note that "remote" and "cluster" requires the akka-remote and akka-cluster
89. # artifacts to be on the classpath.
90. provider = "local"
91.
92. # The guardian "/user" will use this class to obtain its supervisorStrategy.
93. # It needs to be a subclass of akka.actor.SupervisorStrategyConfigurator.
94. # In addition to the default there is akka.actor.StoppingSupervisorStrategy.
95. guardian-supervisor-strategy = "akka.actor.DefaultSupervisorStrategy"
96.
97. # Timeout for ActorSystem.actorOf
98. creation-timeout = 20s
99.
100. # Serializes and deserializes (non-primitive) messages to ensure immutability,
101. # this is only intended for testing.
102. serialize-messages = off
103.
104. # Serializes and deserializes creators (in Props) to ensure that they can be
105. # sent over the network, this is only intended for testing. Purely local deployments
106. # as marked with deploy.scope == LocalScope are exempt from verification.
107. serialize-creators = off
108.
109. # Timeout for send operations to top-level actors which are in the process
110. # of being started. This is only relevant if using a bounded mailbox or the
111. # CallingThreadDispatcher for a top-level actor.
112. unstarted-push-timeout = 10s
113.
114. typed {
115. # Default timeout for typed actor methods with non-void return type
116. timeout = 5s
117. }
118.
119. # Mapping between ´deployment.router' short names to fully qualified class names
120. router.type-mapping {
121. from-code = "akka.routing.NoRouter"
122. round-robin-pool = "akka.routing.RoundRobinPool"
123. round-robin-group = "akka.routing.RoundRobinGroup"
124. random-pool = "akka.routing.RandomPool"
125. random-group = "akka.routing.RandomGroup"
126. balancing-pool = "akka.routing.BalancingPool"
127. smallest-mailbox-pool = "akka.routing.SmallestMailboxPool"
128. broadcast-pool = "akka.routing.BroadcastPool"
129. broadcast-group = "akka.routing.BroadcastGroup"
130. scatter-gather-pool = "akka.routing.ScatterGatherFirstCompletedPool"
131. scatter-gather-group = "akka.routing.ScatterGatherFirstCompletedGroup"
132. tail-chopping-pool = "akka.routing.TailChoppingPool"
133. tail-chopping-group = "akka.routing.TailChoppingGroup"
134. consistent-hashing-pool = "akka.routing.ConsistentHashingPool"
135. consistent-hashing-group = "akka.routing.ConsistentHashingGroup"
136. }
137.
138. deployment {
139.
140. # deployment id pattern - on the format: /parent/child etc.
141. default {
142.
143. # The id of the dispatcher to use for this actor.
144. # If undefined or empty the dispatcher specified in code
145. # (Props.withDispatcher) is used, or default-dispatcher if not
146. # specified at all.
147. dispatcher = ""
148.
149. # The id of the mailbox to use for this actor.
150. # If undefined or empty the default mailbox of the configured dispatcher
151. # is used or if there is no mailbox configuration the mailbox specified
152. # in code (Props.withMailbox) is used.
153. # If there is a mailbox defined in the configured dispatcher then that
154. # overrides this setting.
155. mailbox = ""
156.
157. # routing (load-balance) scheme to use
158. # - available: "from-code", "round-robin", "random", "smallest-mailbox",
159. # "scatter-gather", "broadcast"
160. # - or: Fully qualified class name of the router class.
161. # The class must extend akka.routing.CustomRouterConfig and
162. # have a public constructor with com.typesafe.config.Config
163. # and optional akka.actor.DynamicAccess parameter.
164. # - default is "from-code";
165. # Whether or not an actor is transformed to a Router is decided in code
166. # only (Props.withRouter). The type of router can be overridden in the
167. # configuration; specifying "from-code" means that the values specified
168. # in the code shall be used.
169. # In case of routing, the actors to be routed to can be specified
170. # in several ways:
171. # - nr-of-instances: will create that many children
172. # - routees.paths: will route messages to these paths using ActorSelection,
173. # i.e. will not create children
174. # - resizer: dynamically resizable number of routees as specified in
175. # resizer below
176. router = "from-code"
177.
178. # number of children to create in case of a router;
179. # this setting is ignored if routees.paths is given
180. nr-of-instances = 1
181.
182. # within is the timeout used for routers containing future calls
183. within = 5 seconds
184.
185. # number of virtual nodes per node for consistent-hashing router
186. virtual-nodes-factor = 10
187.
188. tail-chopping-router {
189. # interval is duration between sending message to next routee
190. interval = 10 milliseconds
191. }
192.
193. routees {
194. # Alternatively to giving nr-of-instances you can specify the full
195. # paths of those actors which should be routed to. This setting takes
196. # precedence over nr-of-instances
197. paths = []
198. }
199.
200. # To use a dedicated dispatcher for the routees of the pool you can
201. # define the dispatcher configuration inline with the property name
202. # 'pool-dispatcher' in the deployment section of the router.
203. # For example:
204. # pool-dispatcher {
205. # fork-join-executor.parallelism-min = 5
206. # fork-join-executor.parallelism-max = 5
207. # }
208.
209. # Routers with dynamically resizable number of routees; this feature is
210. # enabled by including (parts of) this section in the deployment
211. resizer {
212.
213. enabled = off
214.
215. # The fewest number of routees the router should ever have.
216. lower-bound = 1
217.
218. # The most number of routees the router should ever have.
219. # Must be greater than or equal to lower-bound.
220. upper-bound = 10
221.
222. # Threshold used to evaluate if a routee is considered to be busy
223. # (under pressure). Implementation depends on this value (default is 1).
224. # 0: number of routees currently processing a message.
225. # 1: number of routees currently processing a message has
226. # some messages in mailbox.
227. # > 1: number of routees with at least the configured pressure-threshold
228. # messages in their mailbox. Note that estimating mailbox size of
229. # default UnboundedMailbox is O(N) operation.
230. pressure-threshold = 1
231.
232. # Percentage to increase capacity whenever all routees are busy.
233. # For example, 0.2 would increase 20% (rounded up), i.e. if current
234. # capacity is 6 it will request an increase of 2 more routees.
235. rampup-rate = 0.2
236.
237. # Minimum fraction of busy routees before backing off.
238. # For example, if this is 0.3, then we'll remove some routees only when
239. # less than 30% of routees are busy, i.e. if current capacity is 10 and
240. # 3 are busy then the capacity is unchanged, but if 2 or less are busy
241. # the capacity is decreased.
242. # Use 0.0 or negative to avoid removal of routees.
243. backoff-threshold = 0.3
244.
245. # Fraction of routees to be removed when the resizer reaches the
246. # backoffThreshold.
247. # For example, 0.1 would decrease 10% (rounded up), i.e. if current
248. # capacity is 9 it will request an decrease of 1 routee.
249. backoff-rate = 0.1
250.
251. # Number of messages between resize operation.
252. # Use 1 to resize before each message.
253. messages-per-resize = 10
254. }
255.
256. # Routers with dynamically resizable number of routees based on
257. # performance metrics.
258. # This feature is enabled by including (parts of) this section in
259. # the deployment, cannot be enabled together with default resizer.
260. optimal-size-exploring-resizer {
261.
262. enabled = off
263.
264. # The fewest number of routees the router should ever have.
265. lower-bound = 1
266.
267. # The most number of routees the router should ever have.
268. # Must be greater than or equal to lower-bound.
269. upper-bound = 10
270.
271. # probability of doing a ramping down when all routees are busy
272. # during exploration.
273. chance-of-ramping-down-when-full = 0.2
274.
275. # Interval between each resize attempt
276. action-interval = 5s
277.
278. # If the routees have not been fully utilized (i.e. all routees busy)
279. # for such length, the resizer will downsize the pool.
280. downsize-after-underutilized-for = 72h
281.
282. # Duration exploration, the ratio between the largest step size and
283. # current pool size. E.g. if the current pool size is 50, and the
284. # explore-step-size is 0.1, the maximum pool size change during
285. # exploration will be +- 5
286. explore-step-size = 0.1
287.
288. # Probabily of doing an exploration v.s. optmization.
289. chance-of-exploration = 0.4
290.
291. # When downsizing after a long streak of underutilization, the resizer
292. # will downsize the pool to the highest utiliziation multiplied by a
293. # a downsize rasio. This downsize ratio determines the new pools size
294. # in comparison to the highest utilization.
295. # E.g. if the highest utilization is 10, and the down size ratio
296. # is 0.8, the pool will be downsized to 8
297. downsize-ratio = 0.8
298.
299. # When optimizing, the resizer only considers the sizes adjacent to the
300. # current size. This number indicates how many adjacent sizes to consider.
301. optimization-range = 16
302.
303. # The weight of the latest metric over old metrics when collecting
304. # performance metrics.
305. # E.g. if the last processing speed is 10 millis per message at pool
306. # size 5, and if the new processing speed collected is 6 millis per
307. # message at pool size 5. Given a weight of 0.3, the metrics
308. # representing pool size 5 will be 6 * 0.3 + 10 * 0.7, i.e. 8.8 millis
309. # Obviously, this number should be between 0 and 1.
310. weight-of-latest-metric = 0.5
311. }
312. }
313.
314. /IO-DNS/inet-address {
315. mailbox = "unbounded"
316. router = "consistent-hashing-pool"
317. nr-of-instances = 4
318. }
319. }
320.
321. default-dispatcher {
322. # Must be one of the following
323. # Dispatcher, PinnedDispatcher, or a FQCN to a class inheriting
324. # MessageDispatcherConfigurator with a public constructor with
325. # both com.typesafe.config.Config parameter and
326. # akka.dispatch.DispatcherPrerequisites parameters.
327. # PinnedDispatcher must be used together with executor=thread-pool-executor.
328. type = "Dispatcher"
329.
330. # Which kind of ExecutorService to use for this dispatcher
331. # Valid options:
332. # - "default-executor" requires a "default-executor" section
333. # - "fork-join-executor" requires a "fork-join-executor" section
334. # - "thread-pool-executor" requires a "thread-pool-executor" section
335. # - A FQCN of a class extending ExecutorServiceConfigurator
336. executor = "default-executor"
337.
338. # This will be used if you have set "executor = "default-executor"".
339. # If an ActorSystem is created with a given ExecutionContext, this
340. # ExecutionContext will be used as the default executor for all
341. # dispatchers in the ActorSystem configured with
342. # executor = "default-executor". Note that "default-executor"
343. # is the default value for executor, and therefore used if not
344. # specified otherwise. If no ExecutionContext is given,
345. # the executor configured in "fallback" will be used.
346. default-executor {
347. fallback = "fork-join-executor"
348. }
349.
350. # This will be used if you have set "executor = "fork-join-executor""
351. # Underlying thread pool implementation is scala.concurrent.forkjoin.ForkJoinPool
352. fork-join-executor {
353. # Min number of threads to cap factor-based parallelism number to
354. parallelism-min = 8
355.
356. # The parallelism factor is used to determine thread pool size using the
357. # following formula: ceil(available processors * factor). Resulting size
358. # is then bounded by the parallelism-min and parallelism-max values.
359. parallelism-factor = 3.0
360.
361. # Max number of threads to cap factor-based parallelism number to
362. parallelism-max = 64
363.
364. # Setting to "FIFO" to use queue like peeking mode which "poll" or "LIFO" to use stack
365. # like peeking mode which "pop".
366. task-peeking-mode = "FIFO"
367. }
368.
369. # This will be used if you have set "executor = "thread-pool-executor""
370. # Underlying thread pool implementation is java.util.concurrent.ThreadPoolExecutor
371. thread-pool-executor {
372. # Keep alive time for threads
373. keep-alive-time = 60s
374.
375. # Define a fixed thread pool size with this property. The corePoolSize
376. # and the maximumPoolSize of the ThreadPoolExecutor will be set to this
377. # value, if it is defined. Then the other pool-size properties will not
378. # be used.
379. #
380. # Valid values are: `off` or a positive integer.
381. fixed-pool-size = off
382.
383. # Min number of threads to cap factor-based corePoolSize number to
384. core-pool-size-min = 8
385.
386. # The core-pool-size-factor is used to determine corePoolSize of the
387. # ThreadPoolExecutor using the following formula:
388. # ceil(available processors * factor).
389. # Resulting size is then bounded by the core-pool-size-min and
390. # core-pool-size-max values.
391. core-pool-size-factor = 3.0
392.
393. # Max number of threads to cap factor-based corePoolSize number to
394. core-pool-size-max = 64
395.
396. # Minimum number of threads to cap factor-based maximumPoolSize number to
397. max-pool-size-min = 8
398.
399. # The max-pool-size-factor is used to determine maximumPoolSize of the
400. # ThreadPoolExecutor using the following formula:
401. # ceil(available processors * factor)
402. # The maximumPoolSize will not be less than corePoolSize.
403. # It is only used if using a bounded task queue.
404. max-pool-size-factor = 3.0
405.
406. # Max number of threads to cap factor-based maximumPoolSize number to
407. max-pool-size-max = 64
408.
409. # Specifies the bounded capacity of the task queue (< 1 == unbounded)
410. task-queue-size = -1
411.
412. # Specifies which type of task queue will be used, can be "array" or
413. # "linked" (default)
414. task-queue-type = "linked"
415.
416. # Allow core threads to time out
417. allow-core-timeout = on
418. }
419.
420. # How long time the dispatcher will wait for new actors until it shuts down
421. shutdown-timeout = 1s
422.
423. # Throughput defines the number of messages that are processed in a batch
424. # before the thread is returned to the pool. Set to 1 for as fair as possible.
425. throughput = 5
426.
427. # Throughput deadline for Dispatcher, set to 0 or negative for no deadline
428. throughput-deadline-time = 0ms
429.
430. # For BalancingDispatcher: If the balancing dispatcher should attempt to
431. # schedule idle actors using the same dispatcher when a message comes in,
432. # and the dispatchers ExecutorService is not fully busy already.
433. attempt-teamwork = on
434.
435. # If this dispatcher requires a specific type of mailbox, specify the
436. # fully-qualified class name here; the actually created mailbox will
437. # be a subtype of this type. The empty string signifies no requirement.
438. mailbox-requirement = ""
439. }
440.
441. default-mailbox {
442. # FQCN of the MailboxType. The Class of the FQCN must have a public
443. # constructor with
444. # (akka.actor.ActorSystem.Settings, com.typesafe.config.Config) parameters.
445. mailbox-type = "akka.dispatch.UnboundedMailbox"
446.
447. # If the mailbox is bounded then it uses this setting to determine its
448. # capacity. The provided value must be positive.
449. # NOTICE:
450. # Up to version 2.1 the mailbox type was determined based on this setting;
451. # this is no longer the case, the type must explicitly be a bounded mailbox.
452. mailbox-capacity = 1000
453.
454. # If the mailbox is bounded then this is the timeout for enqueueing
455. # in case the mailbox is full. Negative values signify infinite
456. # timeout, which should be avoided as it bears the risk of dead-lock.
457. mailbox-push-timeout-time = 10s
458.
459. # For Actor with Stash: The default capacity of the stash.
460. # If negative (or zero) then an unbounded stash is used (default)
461. # If positive then a bounded stash is used and the capacity is set using
462. # the property
463. stash-capacity = -1
464. }
465.
466. mailbox {
467. # Mapping between message queue semantics and mailbox configurations.
468. # Used by akka.dispatch.RequiresMessageQueue[T] to enforce different
469. # mailbox types on actors.
470. # If your Actor implements RequiresMessageQueue[T], then when you create
471. # an instance of that actor its mailbox type will be decided by looking
472. # up a mailbox configuration via T in this mapping
473. requirements {
474. "akka.dispatch.UnboundedMessageQueueSemantics" =
475. akka.actor.mailbox.unbounded-queue-based
476. "akka.dispatch.BoundedMessageQueueSemantics" =
477. akka.actor.mailbox.bounded-queue-based
478. "akka.dispatch.DequeBasedMessageQueueSemantics" =
479. akka.actor.mailbox.unbounded-deque-based
480. "akka.dispatch.UnboundedDequeBasedMessageQueueSemantics" =
481. akka.actor.mailbox.unbounded-deque-based
482. "akka.dispatch.BoundedDequeBasedMessageQueueSemantics" =
483. akka.actor.mailbox.bounded-deque-based
484. "akka.dispatch.MultipleConsumerSemantics" =
485. akka.actor.mailbox.unbounded-queue-based
486. "akka.dispatch.ControlAwareMessageQueueSemantics" =
487. akka.actor.mailbox.unbounded-control-aware-queue-based
488. "akka.dispatch.UnboundedControlAwareMessageQueueSemantics" =
489. akka.actor.mailbox.unbounded-control-aware-queue-based
490. "akka.dispatch.BoundedControlAwareMessageQueueSemantics" =
491. akka.actor.mailbox.bounded-control-aware-queue-based
492. "akka.event.LoggerMessageQueueSemantics" =
493. akka.actor.mailbox.logger-queue
494. }
495.
496. unbounded-queue-based {
497. # FQCN of the MailboxType, The Class of the FQCN must have a public
498. # constructor with (akka.actor.ActorSystem.Settings,
499. # com.typesafe.config.Config) parameters.
500. mailbox-type = "akka.dispatch.UnboundedMailbox"
501. }
502.
503. bounded-queue-based {
504. # FQCN of the MailboxType, The Class of the FQCN must have a public
505. # constructor with (akka.actor.ActorSystem.Settings,
506. # com.typesafe.config.Config) parameters.
507. mailbox-type = "akka.dispatch.BoundedMailbox"
508. }
509.
510. unbounded-deque-based {
511. # FQCN of the MailboxType, The Class of the FQCN must have a public
512. # constructor with (akka.actor.ActorSystem.Settings,
513. # com.typesafe.config.Config) parameters.
514. mailbox-type = "akka.dispatch.UnboundedDequeBasedMailbox"
515. }
516.
517. bounded-deque-based {
518. # FQCN of the MailboxType, The Class of the FQCN must have a public
519. # constructor with (akka.actor.ActorSystem.Settings,
520. # com.typesafe.config.Config) parameters.
521. mailbox-type = "akka.dispatch.BoundedDequeBasedMailbox"
522. }
523.
524. unbounded-control-aware-queue-based {
525. # FQCN of the MailboxType, The Class of the FQCN must have a public
526. # constructor with (akka.actor.ActorSystem.Settings,
527. # com.typesafe.config.Config) parameters.
528. mailbox-type = "akka.dispatch.UnboundedControlAwareMailbox"
529. }
530.
531. bounded-control-aware-queue-based {
532. # FQCN of the MailboxType, The Class of the FQCN must have a public
533. # constructor with (akka.actor.ActorSystem.Settings,
534. # com.typesafe.config.Config) parameters.
535. mailbox-type = "akka.dispatch.BoundedControlAwareMailbox"
536. }
537.
538. # The LoggerMailbox will drain all messages in the mailbox
539. # when the system is shutdown and deliver them to the StandardOutLogger.
540. # Do not change this unless you know what you are doing.
541. logger-queue {
542. mailbox-type = "akka.event.LoggerMailboxType"
543. }
544. }
545.
546. debug {
547. # enable function of Actor.loggable(), which is to log any received message
548. # at DEBUG level, see the “Testing Actor Systems” section of the Akka
549. # Documentation at http://akka.io/docs
550. receive = off
551.
552. # enable DEBUG logging of all AutoReceiveMessages (Kill, PoisonPill et.c.)
553. autoreceive = off
554.
555. # enable DEBUG logging of actor lifecycle changes
556. lifecycle = off
557.
558. # enable DEBUG logging of all LoggingFSMs for events, transitions and timers
559. fsm = off
560.
561. # enable DEBUG logging of subscription changes on the eventStream
562. event-stream = off
563.
564. # enable DEBUG logging of unhandled messages
565. unhandled = off
566.
567. # enable WARN logging of misconfigured routers
568. router-misconfiguration = off
569. }
570.
571. # Entries for pluggable serializers and their bindings.
572. serializers {
573. java = "akka.serialization.JavaSerializer"
574. bytes = "akka.serialization.ByteArraySerializer"
575. }
576.
577. # Class to Serializer binding. You only need to specify the name of an
578. # interface or abstract base class of the messages. In case of ambiguity it
579. # is using the most specific configured class, or giving a warning and
580. # choosing the “first” one.
581. #
582. # To disable one of the default serializers, assign its class to "none", like
583. # "java.io.Serializable" = none
584. serialization-bindings {
585. "[B" = bytes
586. "java.io.Serializable" = java
587. }
588.
589. # Set this to on to enable serialization-bindings define in
590. # additional-serialization-bindings. Those are by default not included
591. # for backwards compatibility reasons. They are enabled by default if
592. # akka.remote.artery.enabled=on.
593. enable-additional-serialization-bindings = off
594.
595. # Additional serialization-bindings that are replacing Java serialization are
596. # defined in this section and not included by default for backwards compatibility
597. # reasons. They can be enabled with enable-additional-serialization-bindings=on.
598. # They are enabled by default if akka.remote.artery.enabled=on.
599. additional-serialization-bindings {
600. }
601.
602. # Log warnings when the default Java serialization is used to serialize messages.
603. # The default serializer uses Java serialization which is not very performant and should not
604. # be used in production environments unless you don't care about performance. In that case
605. # you can turn this off.
606. warn-about-java-serializer-usage = on
607.
608. # To be used with the above warn-about-java-serializer-usage
609. # When warn-about-java-serializer-usage = on, and this warn-on-no-serialization-verification = off,
610. # warnings are suppressed for classes extending NoSerializationVerificationNeeded
611. # to reduce noize.
612. warn-on-no-serialization-verification = on
613.
614. # Configuration namespace of serialization identifiers.
615. # Each serializer implementation must have an entry in the following format:
616. # `akka.actor.serialization-identifiers."FQCN" = ID`
617. # where `FQCN` is fully qualified class name of the serializer implementation
618. # and `ID` is globally unique serializer identifier number.
619. # Identifier values from 0 to 16 are reserved for Akka internal usage.
620. serialization-identifiers {
621. "akka.serialization.JavaSerializer" = 1
622. "akka.serialization.ByteArraySerializer" = 4
623. }
624.
625. # Configuration items which are used by the akka.actor.ActorDSL._ methods
626. dsl {
627. # Maximum queue size of the actor created by newInbox(); this protects
628. # against faulty programs which use select() and consistently miss messages
629. inbox-size = 1000
630.
631. # Default timeout to assume for operations like Inbox.receive et al
632. default-timeout = 5s
633. }
634. }
635.
636. # Used to set the behavior of the scheduler.
637. # Changing the default values may change the system behavior drastically so make
638. # sure you know what you're doing! See the Scheduler section of the Akka
639. # Documentation for more details.
640. scheduler {
641. # The LightArrayRevolverScheduler is used as the default scheduler in the
642. # system. It does not execute the scheduled tasks on exact time, but on every
643. # tick, it will run everything that is (over)due. You can increase or decrease
644. # the accuracy of the execution timing by specifying smaller or larger tick
645. # duration. If you are scheduling a lot of tasks you should consider increasing
646. # the ticks per wheel.
647. # Note that it might take up to 1 tick to stop the Timer, so setting the
648. # tick-duration to a high value will make shutting down the actor system
649. # take longer.
650. tick-duration = 10ms
651.
652. # The timer uses a circular wheel of buckets to store the timer tasks.
653. # This should be set such that the majority of scheduled timeouts (for high
654. # scheduling frequency) will be shorter than one rotation of the wheel
655. # (ticks-per-wheel * ticks-duration)
656. # THIS MUST BE A POWER OF TWO!
657. ticks-per-wheel = 512
658.
659. # This setting selects the timer implementation which shall be loaded at
660. # system start-up.
661. # The class given here must implement the akka.actor.Scheduler interface
662. # and offer a public constructor which takes three arguments:
663. # 1) com.typesafe.config.Config
664. # 2) akka.event.LoggingAdapter
665. # 3) java.util.concurrent.ThreadFactory
666. implementation = akka.actor.LightArrayRevolverScheduler
667.
668. # When shutting down the scheduler, there will typically be a thread which
669. # needs to be stopped, and this timeout determines how long to wait for
670. # that to happen. In case of timeout the shutdown of the actor system will
671. # proceed without running possibly still enqueued tasks.
672. shutdown-timeout = 5s
673. }
674.
675. io {
676.
677. # By default the select loops run on dedicated threads, hence using a
678. # PinnedDispatcher
679. pinned-dispatcher {
680. type = "PinnedDispatcher"
681. executor = "thread-pool-executor"
682. thread-pool-executor.allow-core-timeout = off
683. }
684.
685. tcp {
686.
687. # The number of selectors to stripe the served channels over; each of
688. # these will use one select loop on the selector-dispatcher.
689. nr-of-selectors = 1
690.
691. # Maximum number of open channels supported by this TCP module; there is
692. # no intrinsic general limit, this setting is meant to enable DoS
693. # protection by limiting the number of concurrently connected clients.
694. # Also note that this is a "soft" limit; in certain cases the implementation
695. # will accept a few connections more or a few less than the number configured
696. # here. Must be an integer > 0 or "unlimited".
697. max-channels = 256000
698.
699. # When trying to assign a new connection to a selector and the chosen
700. # selector is at full capacity, retry selector choosing and assignment
701. # this many times before giving up
702. selector-association-retries = 10
703.
704. # The maximum number of connection that are accepted in one go,
705. # higher numbers decrease latency, lower numbers increase fairness on
706. # the worker-dispatcher
707. batch-accept-limit = 10
708.
709. # The number of bytes per direct buffer in the pool used to read or write
710. # network data from the kernel.
711. direct-buffer-size = 128 KiB
712.
713. # The maximal number of direct buffers kept in the direct buffer pool for
714. # reuse.
715. direct-buffer-pool-limit = 1000
716.
717. # The duration a connection actor waits for a `Register` message from
718. # its commander before aborting the connection.
719. register-timeout = 5s
720.
721. # The maximum number of bytes delivered by a `Received` message. Before
722. # more data is read from the network the connection actor will try to
723. # do other work.
724. # The purpose of this setting is to impose a smaller limit than the
725. # configured receive buffer size. When using value 'unlimited' it will
726. # try to read all from the receive buffer.
727. max-received-message-size = unlimited
728.
729. # Enable fine grained logging of what goes on inside the implementation.
730. # Be aware that this may log more than once per message sent to the actors
731. # of the tcp implementation.
732. trace-logging = off
733.
734. # Fully qualified config path which holds the dispatcher configuration
735. # to be used for running the select() calls in the selectors
736. selector-dispatcher = "akka.io.pinned-dispatcher"
737.
738. # Fully qualified config path which holds the dispatcher configuration
739. # for the read/write worker actors
740. worker-dispatcher = "akka.actor.default-dispatcher"
741.
742. # Fully qualified config path which holds the dispatcher configuration
743. # for the selector management actors
744. management-dispatcher = "akka.actor.default-dispatcher"
745.
746. # Fully qualified config path which holds the dispatcher configuration
747. # on which file IO tasks are scheduled
748. file-io-dispatcher = "akka.actor.default-dispatcher"
749.
750. # The maximum number of bytes (or "unlimited") to transfer in one batch
751. # when using `WriteFile` command which uses `FileChannel.transferTo` to
752. # pipe files to a TCP socket. On some OS like Linux `FileChannel.transferTo`
753. # may block for a long time when network IO is faster than file IO.
754. # Decreasing the value may improve fairness while increasing may improve
755. # throughput.
756. file-io-transferTo-limit = 512 KiB
757.
758. # The number of times to retry the `finishConnect` call after being notified about
759. # OP_CONNECT. Retries are needed if the OP_CONNECT notification doesn't imply that
760. # `finishConnect` will succeed, which is the case on Android.
761. finish-connect-retries = 5
762.
763. # On Windows connection aborts are not reliably detected unless an OP_READ is
764. # registered on the selector _after_ the connection has been reset. This
765. # workaround enables an OP_CONNECT which forces the abort to be visible on Windows.
766. # Enabling this setting on other platforms than Windows will cause various failures
767. # and undefined behavior.
768. # Possible values of this key are on, off and auto where auto will enable the
769. # workaround if Windows is detected automatically.
770. windows-connection-abort-workaround-enabled = off
771. }
772.
773. udp {
774.
775. # The number of selectors to stripe the served channels over; each of
776. # these will use one select loop on the selector-dispatcher.
777. nr-of-selectors = 1
778.
779. # Maximum number of open channels supported by this UDP module Generally
780. # UDP does not require a large number of channels, therefore it is
781. # recommended to keep this setting low.
782. max-channels = 4096
783.
784. # The select loop can be used in two modes:
785. # - setting "infinite" will select without a timeout, hogging a thread
786. # - setting a positive timeout will do a bounded select call,
787. # enabling sharing of a single thread between multiple selectors
788. # (in this case you will have to use a different configuration for the
789. # selector-dispatcher, e.g. using "type=Dispatcher" with size 1)
790. # - setting it to zero means polling, i.e. calling selectNow()
791. select-timeout = infinite
792.
793. # When trying to assign a new connection to a selector and the chosen
794. # selector is at full capacity, retry selector choosing and assignment
795. # this many times before giving up
796. selector-association-retries = 10
797.
798. # The maximum number of datagrams that are read in one go,
799. # higher numbers decrease latency, lower numbers increase fairness on
800. # the worker-dispatcher
801. receive-throughput = 3
802.
803. # The number of bytes per direct buffer in the pool used to read or write
804. # network data from the kernel.
805. direct-buffer-size = 128 KiB
806.
807. # The maximal number of direct buffers kept in the direct buffer pool for
808. # reuse.
809. direct-buffer-pool-limit = 1000
810.
811. # Enable fine grained logging of what goes on inside the implementation.
812. # Be aware that this may log more than once per message sent to the actors
813. # of the tcp implementation.
814. trace-logging = off
815.
816. # Fully qualified config path which holds the dispatcher configuration
817. # to be used for running the select() calls in the selectors
818. selector-dispatcher = "akka.io.pinned-dispatcher"
819.
820. # Fully qualified config path which holds the dispatcher configuration
821. # for the read/write worker actors
822. worker-dispatcher = "akka.actor.default-dispatcher"
823.
824. # Fully qualified config path which holds the dispatcher configuration
825. # for the selector management actors
826. management-dispatcher = "akka.actor.default-dispatcher"
827. }
828.
829. udp-connected {
830.
831. # The number of selectors to stripe the served channels over; each of
832. # these will use one select loop on the selector-dispatcher.
833. nr-of-selectors = 1
834.
835. # Maximum number of open channels supported by this UDP module Generally
836. # UDP does not require a large number of channels, therefore it is
837. # recommended to keep this setting low.
838. max-channels = 4096
839.
840. # The select loop can be used in two modes:
841. # - setting "infinite" will select without a timeout, hogging a thread
842. # - setting a positive timeout will do a bounded select call,
843. # enabling sharing of a single thread between multiple selectors
844. # (in this case you will have to use a different configuration for the
845. # selector-dispatcher, e.g. using "type=Dispatcher" with size 1)
846. # - setting it to zero means polling, i.e. calling selectNow()
847. select-timeout = infinite
848.
849. # When trying to assign a new connection to a selector and the chosen
850. # selector is at full capacity, retry selector choosing and assignment
851. # this many times before giving up
852. selector-association-retries = 10
853.
854. # The maximum number of datagrams that are read in one go,
855. # higher numbers decrease latency, lower numbers increase fairness on
856. # the worker-dispatcher
857. receive-throughput = 3
858.
859. # The number of bytes per direct buffer in the pool used to read or write
860. # network data from the kernel.
861. direct-buffer-size = 128 KiB
862.
863. # The maximal number of direct buffers kept in the direct buffer pool for
864. # reuse.
865. direct-buffer-pool-limit = 1000
866.
867. # Enable fine grained logging of what goes on inside the implementation.
868. # Be aware that this may log more than once per message sent to the actors
869. # of the tcp implementation.
870. trace-logging = off
871.
872. # Fully qualified config path which holds the dispatcher configuration
873. # to be used for running the select() calls in the selectors
874. selector-dispatcher = "akka.io.pinned-dispatcher"
875.
876. # Fully qualified config path which holds the dispatcher configuration
877. # for the read/write worker actors
878. worker-dispatcher = "akka.actor.default-dispatcher"
879.
880. # Fully qualified config path which holds the dispatcher configuration
881. # for the selector management actors
882. management-dispatcher = "akka.actor.default-dispatcher"
883. }
884.
885. dns {
886. # Fully qualified config path which holds the dispatcher configuration
887. # for the manager and resolver router actors.
888. # For actual router configuration see akka.actor.deployment./IO-DNS/*
889. dispatcher = "akka.actor.default-dispatcher"
890.
891. # Name of the subconfig at path akka.io.dns, see inet-address below
892. resolver = "inet-address"
893.
894. inet-address {
895. # Must implement akka.io.DnsProvider
896. provider-object = "akka.io.InetAddressDnsProvider"
897.
898. # These TTLs are set to default java 6 values
899. positive-ttl = 30s
900. negative-ttl = 10s
901.
902. # How often to sweep out expired cache entries.
903. # Note that this interval has nothing to do with TTLs
904. cache-cleanup-interval = 120s
905. }
906. }
907. }
908.
909.
910.}
akka-agent
1.####################################
2.# Akka Agent Reference Config File #
3.####################################
4.
5.# This is the reference config file that contains all the default settings.
6.# Make your edits/overrides in your application.conf.
7.
8.akka {
9. agent {
10.
11. # The dispatcher used for agent-send-off actor
12. send-off-dispatcher {
13. executor = thread-pool-executor
14. type = PinnedDispatcher
15. }
16.
17. # The dispatcher used for agent-alter-off actor
18. alter-off-dispatcher {
19. executor = thread-pool-executor
20. type = PinnedDispatcher
21. }
22. }
23.}
akka-camel
1.####################################
2.# Akka Camel Reference Config File #
3.####################################
4.
5.# This is the reference config file that contains all the default settings.
6.# Make your edits/overrides in your application.conf.
7.
8.akka {
9. camel {
10. # FQCN of the ContextProvider to be used to create or locate a CamelContext
11. # it must implement akka.camel.ContextProvider and have a no-arg constructor
12. # the built-in default create a fresh DefaultCamelContext
13. context-provider = akka.camel.DefaultContextProvider
14.
15. # Whether JMX should be enabled or disabled for the Camel Context
16. jmx = off
17. # enable/disable streaming cache on the Camel Context
18. streamingCache = on
19. consumer {
20. # Configured setting which determines whether one-way communications
21. # between an endpoint and this consumer actor
22. # should be auto-acknowledged or application-acknowledged.
23. # This flag has only effect when exchange is in-only.
24. auto-ack = on
25.
26. # When endpoint is out-capable (can produce responses) reply-timeout is the
27. # maximum time the endpoint can take to send the response before the message
28. # exchange fails. This setting is used for out-capable, in-only,
29. # manually acknowledged communication.
30. reply-timeout = 1m
31.
32. # The duration of time to await activation of an endpoint.
33. activation-timeout = 10s
34. }
35.
36. #Scheme to FQCN mappings for CamelMessage body conversions
37. conversions {
38. "file" = "java.io.InputStream"
39. }
40. }
41.}
