Netty is a NIO client server framework which enables quick and easy development of network applications such as protocol servers and clients. It greatly simplifies and streamlines network programming such as TCP and UDP socket server.
‘Quick and easy’ doesn’t mean that a resulting application will suffer from a maintainability or a performance issue. Netty has been designed carefully with the experiences earned from the implementation of a lot of protocols such as FTP, SMTP, HTTP, and various binary and text-based legacy protocols. As a result, Netty has succeeded to find a way to achieve ease of development, performance, stability, and flexibility without a compromise.
Apache netty is an optimized socket communication backend application.
It is very useful when we develop large scale real time communication apps.
Famous chatting apps are using apache netty in order to maintain high performance.
For example slack used websocket before in their chatting application but had performance problems as their user’s are significantly increased. They solved this problem using apache netty.
