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Netty -- source code implementation of master-slave Reactor multithreading mode Overview What is EventLoopGroup? EventLoopGroup is a container for storing EventLoop, and it should have the function of thread pool. graph BT; EventLoopGroup --> EventExecutorGroup; EventExecutorGroup --> ScheduledExecutorService; Because EventLoopGr ...

WebClient is a non blocking and responsive Http client provided by Spring. It provides synchronous and asynchronous API s, which will replace RestTemplate and AsyncRestTemplate. The software versions used in this paper are Java 1.8.0, SpringBoot 2.2.1.RELEASE. 1. Server See also Java calls Http interface (1) -- write server  2. Call The use of ...

Netty's own ByteBuf ByteBuffer is designed to solve the problems of ByteBuffer and meet the daily needs of network application developers. Disadvantages of JDK ByteBuffer: Unable to expand dynamically: the length is fixed and cannot be expanded and contracted dynamically. When the data is larger than the ByteBuffer capacity, an index out of bo ...

Netty introduction Netty is a high performance. The highly scalable asynchronous event driven network application framework greatly simplifies network programming such as TCP and UDP client and server development. Netty's four key elements: Reactor thread model: a high performance multithreaded programming idea Self defined Channel concept in ...

Originally, I wanted to learn about Netty components first, then learn about component applications. Then, learning more and more makes me feel weird. I always feel that there is something missing. I don't know how to use components when I learn them. Think about learning from Netty applications first. Own technology learning method: first ...

Hello, I am Tong Ge, this is the fourth article in the netty series. Welcome to my public Tong Tong to read Source Systematically to learn the knowledge of Source-Architecture. brief introduction In the previous chapter, we learned the story of BIO/NIO/AIO in Java together. This chapter will take you all together to use pure NIO to implement a ...

Pooledbytebufalocator is responsible for initializing PoolArena(PA) and PoolThreadCache(PTC). It provides a series of interfaces to create PooledByteBuf objects that use heap memory or direct memory. These interfaces are just a skin. PA and PTC capabilities are fully used internally. The initialization process is divided into two steps, first i ...

(it's more convenient to see the source code on the horizontal screen of mobile phone) Note: java source code analysis part is based on java version 8 unless otherwise specified. brief introduction The construction method of ThreadPoolExecutor is to create the entry of thread pool. Although it's relatively simple, it has a large amount of in ...

This article mainly introduces how to upgrade RocketMQ cluster from the original master-slave synchronization to the master-slave switch. First, it introduces the core configuration attributes related to the master-slave switch of the DLedger multi replica, that is, the RocketMQ master-slave switch. Then it tries to build a master-slave synchro ...

In the previous article, we introduced sticky package and half package and their general solutions. Today, we will focus on how Netty implements the framing scheme.<!-- more --> Decoding core process Three kinds of decoders, FixedLengthFrameDecoder, DelimiterBasedFrameDecoder, LengthFieldBasedFrameDecoder, have been introduced before. The ...