Programmer Think

brief introductionSOCKS is an excellent network protocol, which is mainly used as an agent. Its two main versions are SOCKS4 and SOCKS5, in which SOCKS5 provides support for authentication. Generally speaking, we can use SSH tools to build a simple SOCKS protocol channel. How does netty support SOCKS? Let's have a look.SocksMessageThe first is ...

Netty study notes 1. Introduction and application scenario of netty 1.1 INTRODUCTION Netty is an open source framework for jbossNetty is an asynchronous, event driven network application frameworkBased on nio 1.2 application scenarios Rpc e.g. dubbogamebig data Applications involving network communication can use netty 2. i/o model 2.1 ...

4. Netty entry and advanced 4 ❤❤❤ Network programming 4.1 non blocking vs blocking block In blocking mode, the related methods will cause the thread to pause ServerSocketChannel.accept suspends the thread when no connection is establishedSocketChannel.read pauses the thread when there is no data to readThe performance of blocking is actua ...

brief introductionIn the previous article, we mentioned that netty provides the encapsulation of SocksMessage object for SOCKS messages, distinguishes between SOCKS4 and SOCKS5, and provides various states of connection and response.With the encapsulation of socks messages, what else do we need to do to build a SOCKS server?Using SSH to build S ...

preface In the previous chapter, we understood the three cores of Java NIO, and focused on the principle of Buffer and several usage scenarios, in which channel is also used. In this chapter, let's understand selector and combine channel to do c/s communication. Understanding Selector and Channel The Selector, also known as the multiplexer, ...

Future&Promise Future in Netty has the same name as future in JDK, but these are two interfaces. Future in Netty inherits from the future interface in JDK, and Promise inherits from the future interface in Netty.The Future function of JDK is weak. You can only get results after * * synchronization and waiting * * task ends (or succeeds or ...

background This paper follows the above StreamTask data flow , we explained how the data in the task in each executor is read, converted and written. In this article, we will explain the data transmission process between executors, including the shuffle implementation of flick and the details of reading and writing data of InputChannel and Res ...

brief introduction Einstein said: all greatness comes from simple details. netty provides us with such powerful eventloop and channel. Through the effective use of these simple things, we can get very powerful applications, such as the agent to be talked about today. Proxy and reverse proxy I believe that as long as programmers should ha ...

1, Background During the development process, we encountered the problem of out of heap memory leakage - the service will fake death (it seems that the service process is still running, but there is no business response). Check the error log of logback and record the following information: [location-center:192.168.5.14:8017] [,] 2021-07-2 ...

brief introductionIn fact, the most profitable thing in the software industry is not to write code. Those who write code can only be called Malone. Those who are more advanced are called programmers. They are all coolies. So is there a big career? There must be. Their name is consultant.Consultants are to help enterprises make plans, architectu ...