An event-driven non-blocking architecture is a fundamental layer to implement highly efficient, scalable, and reliable servers. The challenge is to minimize the thread synchronization overhead and to optimize the connection/buffer management. This will be the hardest part to program. But there is no need to reinvent the wheel. Server frameworks like xSocket, emberIO, SEDA, or MINA abstract the low-level event handling and thread management to ease the creation of highly scalable servers. This paper describes the basic architecture of a connection-oriented NIO-based server.
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