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1, Introduction 1, Overview Netty is an open source framework provided by JBOSS. In essence, it is a network application framework. It provides a non blocking and event driven network application framework and tools to facilitate the rapid development of high-performance and reliable network server and client. 2, Core architecture         ...

1. What is sticky unpacking? Packet gluing and unpacking generally occur at the TCP protocol layer. TCP, as the transport layer, generally does not know the specific meaning of the data in the upper layer (here refers to our code service layer). It will divide the data packets according to the actual situation of the TCP buffer. Therefo ...

Reference counting is a common memory management mechanism. It refers to the process of saving the number of references of resources and releasing them when the number of references becomes zero. Netty at 4 Version x began to use the reference counting mechanism to manage some objects. Its implementation idea is not particularly complex. It mai ...

Netty knowledge summary This article is mainly a summary of some knowledge points about Netty In Action history Blocking io A thread is used to process a connection. Connection creation and operation are blocked usage method try { // Listen to local port 8000 ServerSocket serverSocket = new ServerSocket(8000); // Blocking waitin ...

1. Inheritance system diagram of nioeventloopgroup You can see that the EventExecutorGroup inherits from ScheduleExecutorService and Iterable This means that there are thread pools and iterators. What does NioEventLoopGroup do to the thread pool and what are iterators iterating? Look down~ 2. Function description of eventexecutorgroup c ...

1, Introduction Technology stack: Java: 1.8 SpringBoot: 2.2.2.RELEASE Netty: 4.1.32.Final For basic understanding, refer to the following article: https://blog.csdn.net/DreamsArchitects/article/details/120177336 Current time: 17:02:38, December 31, 2021 As the last year of 2021, blog. 2, Question 2.1 start server mode Previously, the ...

BIO and NIO Note: the io models discussed in this paper are based on the network communication socket BIO -- blocking IO model In network communication, the client establishes a connection with the server first. Because the server does not know when the client will send data, the server has to start a thread to receive messages from the clie ...

brief introduction In the previous series of articles, we mentioned that the channel in netty only accepts ByteBuf objects. If it is not a ByteBuf object, it needs to be converted with a coder and decoder. Today, let's talk about the problems that need to be paid attention to in the implementation of netty's custom coder and decoder. Impl ...

2021SC@SDUSC Google Protobuf 1 basic introduction of encoding and decoding When writing a network application, because the data transmitted in the network is binary bytecode data, it needs to be encoded when sending data and decoded when receiving data [schematic diagram] There are two components of codec: decoder and encoder. The encoder ...

brief introduction In the last article, we talked about how to customize the codec and decoder in netty, but the customization implementation is still very complex. Generally, when there is no special need, we all hope that the simpler the better. The difficulty is to find the segmentation points in ByteBuf and divide ByteBuf into manageab ...