scala akka

into future, but it may cause performance problems and OOM. Solution to the blocking problem: Place blocking calls in one or more actor-managed router. Make sure to configure a thread pool When putting blocking into the future, you must ensure that there is a maximum number of future calls; otherwise, oom is easy. You can also configure a thread pool with an upper limit. Use a single thread to manage a group of blocked resources and issue events through actor messages. Actorref State serial

Akka is a library written in Scala that simplifies writing fault-tolerant, highly scalable Java and Scala Actor model applications. It has been successfully used in the telecommunications industry. The system will hardly go down (high availability 99.9999999 per year only for Ms Downtime.)Calculate the pi with Akka and

Download akka Introduction Akka is a library written in scala. It is used to simplify the compilation of fault tolerant and highly scalable Java and Scala actor model applications. It has been successfully applied in the telecom industry. The system almost never goes down (High Availability 99.9999999% a year only 31

Build Akka development on IntelliJ idea.Reason for using idea: there is no need to spend time learning to configure; using idea will make it more natural and more intelligent.Support is better on MAVEN,SBT.Some of Maven's features are described, and Maven is much more used.Sample word Count code for a simple explanation.DT Big Data Dream Factory public account: Dt_spark.DT Big Data Dream Factory's public number is Dt_spark, every day will have big dat

")}//#printer-actor//#main-class Object Akkaquickstart Extends App {import greeter._//Create the ' Helloakka ' actor system val System:actorsystem = Actorsystem ("Helloa Kka ")//#create-actors//Create the printer actor Val printer:actorref = System.actorof (Printer.props," Printerac Tor ")//Create the ' greeter ' actors val howdygreeter:actorref = System.actorof (Greeter.props (" Howdy ", printer), "Howdygreeter") val hellogreeter:actorref = System.actorof (Greeter.props ("Hello", printer), "He

Install the SBT plug-in File--Setting---Plugins, enter SBT, select SBT, click the Install button.Idea will restart.Enter project name, New project, Scala, SBT.DT Big Data Dream Factory public account: Dt_spark.DT Big Data Dream Factory's public number is Dt_spark, every day will have big data actual combat video release, please continue to study.Liaoliang DT Big Data dream factory Scala all videos, PPT and

Actorsystem Jian Masteractor.Akka's actor is a tree-shaped structure that can be used to find actors that are distributed across multiple machines, as well as to inherit some of the configuration to sub-actors.The Masteractor is the receiving and forwarding side of the message.Actorsystem run out to shutdown.650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/73/0C/wKioL1Xy6jLg3na0AAHWtddXN6k639.jpg "title=" Akka_ Practice.png "alt=" Wkiol1xy6jlg3na0aahwtddxn6k639.jpg "/>DT Big Data Dream

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How to package into a jar package:File, Project structure, artfact, point +, JAR, from modules with dependencies ...Select Module----click OK to specify main class.DT Big Data Dream Factory public account: Dt_spark.DT Big Data Dream Factory's public number is Dt_spark, every day will have big data actual combat video release, please continue to study.Liaoliang DT Big Data dream factory Scala all videos, PPT and code in Baidu Cloud disk link:http://pan

Masteractor the way to initialize Mapactor,reduceactor,aggregateactor.DT Big Data Dream Factory public account: Dt_spark.DT Big Data Dream Factory's public number is Dt_spark, every day will have big data actual combat video release, please continue to study.Liaoliang DT Big Data dream factory Scala all videos, PPT and code in Baidu Cloud disk link:http://pan.baidu.com/share/home?uk=4013289088#category/type=0 Qq-pf-to=pcqq.groupQQ Group:DT Big Data Dr

, doing what he's best at.failure handling of actorNo one is perfect, the actor is impossible. 100% complete a task if the task fails, an actor suspends himself and his subordinates, and then sends a message telling his superiors that "I failed". When a supervisor receives a "failed" message from a subordinate, it can react as follows: Failure fails, so it's not too much of a relationship: keep the current state, resume the actor, continue working not successful Ah, then redo it again: Reset th

For a, B, and C, the Akka is automatically executed sequentially by default, but for database operations we want to execute a few operations in order, and we need to use syntax to declareThere are two ways to declare a future relationship, the first is FlatMap, and the second is forImportScala.Concurrent.FutureImportScala.Concurrent.ExecutionContext.Implicits.GlobalImportScala.Concurrent.BlockingImportScala.Concurrent.Duration._DefF(Item: Int): Future

This blog gradually analyze the source of Akka streams, of course, must be gradual, and estimates will be divided into many, after all, Akka streams is more complex. Implicit val system = Actorsystem ("QuickStart") implicit val Materializer = Actormaterializer () When using streams-related APIs, the above two objects must be created. Actorsystem no longer said, we came to see Actormaterializer. Actormateri

A period of time has been immersed in functional programming mode, one of the main purposes is to master a set of safe and reliable concurrent programming method (concurrent programming), finally through the Open source project Funda implementation of the single-machine multi-core CPU program parallel operation. However, although the parallel operation in the terminal can make full use of the computing power of multi-core CPU to distribute data processing operations to the foreground can greatly

Scala has been using Akka as a concurrency model since 2.10, and this article is the first example of Akka.1.Akka Getting Started instance PackageCom.tv189.actorImportAkka.actor. {Actor, Actorsystem, Props}/*** Created by Molyeo on 2015/8/6.*/Object AkkaTest01extendsApp {val system= Actorsystem ("Akkatest") Val Helloac