akka framework

Want to get Akka http, used for our open source project football, found Akka http in the case of a large number of Akka stream, and Akka HTTP is built on the Akka stream.So let's take a look at Akka stream first to understand the

Akka entry-become and unbecome, akkaunbecomeAkka supports real-time replacement of the role message loop (such as its implementation) at runtime: Call the getContext. become method in the role. Hot replacement code is stored in a stack and can be pushed (replacing or adding at the top) and popped.A particularly good example of become is to use it to implement a finite state machine.The Become/Unbecome feature can also be used to conveniently implement

Akka What is akka? Directly reference the above description on the akka Website: Akka is a toolkit and runtime for building highly concurrent, distributed, and fault tolerant event-driven applications on the JVM. Anyway, I think akka is difficult to get starte

Spark is a distributed computing framework, and there must be communication between multiple machines. Spark was implemented in earlier versions using Akka. A rpcenv is now abstracted from the upper Akka. The rpcenv is responsible for managing communication between machines.The RPCENV consists of three main cores: Rpcendpoint the message loop body, which

Before play 2.6.x, the play defaults to using the Netty service backend. By 2.6.x, the default service backend is replaced with Akka HTTP, but it is still possible to manually select the Netty service backend. To upgrade to 2.6.x, you need to be aware of this. Because Akka HTTP servers are slower than Netty HTTP servers. So if you are particularly sensitive to performance, you will need to manually select t

I have been learning to use akka for a year. At present, I am still used to writing programs under akka in Java. For native Scala, there is still no time and interest to learn it. After all, learning a language requires interest and time. Akka learning resources are not rich yet. I have read the official Programming Manual and the

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

SOURCE Https://www.playframework.com/documentation/2.5.x/JavaAkka#Scheduling-asynchronous-tasksAkka uses the Actor model to provide an abstraction layer, providing a better platform to build the right multi-threaded and extensible applications. In terms of fault tolerance, the ' Let it Crash ' model, which has been successfully used in communications, is used primarily to build a never-stop self-health system. Actors provides an abstraction for transport distribution, providing the basis for sca

Akka.net Current Roadmapakka.net is a community-driven port of the popular Java/scala framework Akka to. NET. Subscribe to the Akka.net Dev Feed:https://twitter.com/akkadotnet (@AkkaDotNet) Support Forum:https://groups.google.com/forum/#!forum/akkadotnet-user-list Mail: [email protected] Stack overflow:http://stackoverflow.com/questions/tagged/akka.net Documentation and Resourcesak

1.RPC: The simple point is that the communication between multithreading, we use Scala and Akka todayTo make it simple.Some simple contents of the RPC framework, a face including, heartbeat, Interval time,Registration and some questions,Pattern matching some things, although relatively simple, but belong to the small, perfectly formedThere are a total of four files in this:Master.scalaRemotemessage.scalaWor

First part: Actor Architecture Akka version 2.5.8Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced. Akka provides you with some basic functionality for creating an actor system, and has implemented the underlying code necessary to control basic behavior. To understand this, let's take a look at the relationship between the actor role you created and

Route is the core part of Akka-http routing DSL, which makes it easy for users to filter http-request from Http-server, perform server operations, and build replies Http-response. The main purpose of the so-called screening http-request is to allow request to enter the next inner route, or to reject reject request. For example, this ~ symbol: it connects up and down two separate route. If the route above rejects a request, the following route will the

The following procedure demonstrates a simple example of Akka. Create an actor to process a command that interacts with the message delivery. I use the Akka version and the associated jar package see the Pom file: 1. Creating Event Events Import java.io.Serializable; public class Event implements Serializable { private String data; Private String uuid; Public Event (String data) {

Echoserver In the previous article, we used akka to write a simpleHelloworldFor exampleActorMode) has a preliminary understanding. This article uses akka to writeEchoserverTo see how to use actor in the worldTCP protocol. GitHub Project As usual, the echoserver code is put on GitHub. Echoserver is a little more complex than helloworld. There are three classes, as shown in: Main Start with the main

The purpose of cluster sharding is to provide a framework to facilitate DDD, although I have not yet figured out what the application of DDD is, but cluster sharding is a tool that I am currently working on to extend the project to the cluster.Sharding to do such a few things.1. For each entity, create an actor. The entity has an Id as the unique identifier. All messages for this entity are handled by this actor2. When the actor does not work for a pe

1. Test Objective: verify that Akka ensures that each instance of the actor runs in its own lightweight thread and has its own queue, guaranteeing FIFO processing of each message. 2, Akka actor is both a transmitter and receiver, send messages and receive messages must pass their own OnReceive method. 3. If you use the same instance test obtained from spring, the result is that each actor instance is self-

Akka send a message to the actor in the following way! Tell means "Fire-and-forget", that is, asynchronously sending a message without waiting for the result to be returned ? Ask asynchronously sends a message and returns a future that represents a possible reply. Messages are ordered on a per-sender basis. MailBox The Akka mailbox contains messages destined for the actor. Usually each actor has its own mai

Akka-persistence-hbase-master is the component responsible for Akka persistence, using the Async method to manipulate HBase, Akka logs persisted into hbase.Akka-persistence-hbase-master to create a journal table before persisting, the configuration of the table is stored in the application.conf file.The Akka.persistence.hbase.journal.HBaseJournalInit object is re

Title, to test the Akka Actor model remote transmission restrictions, the results have really found a point.The design test cases are as follows:Client side:1 Packagecn.wanda.local2 3 ImportAkka.actor.Actor4 Importmodule. {ListType, Jsontype, Seqtype}5 6 Importjava.util.ArrayList7 /**8 * Created by Administrator on 2014/11/17.9 */Ten classLocalactorextendsActor { One AVal remote = context.actorselection ("Akka.tcp://[email protected]:8000/user/remo

Main content:1. Typed actor Definition2. Typed actor Created3. Message sent 1. Typed actor Definition The typed actor in Akka is the implementation of the active objects design pattern, and the active objects mode will decouple the execution of the method and the invocation of the method, thus introducing concurrency into the program. The Typed actor is composed of a common interface and a corresponding implementation, and its underlying implementatio