RPC_V4. 第一版RPC，基于BIO、反射、JDK动态代理。 第二版，与第一版比较使用了NIO来实现通信 。第三版，使用Netty来简化第二版中NIO通信操作 。第四版，利用Zookeeper实现服务注册。

Problem

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Audience

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Market

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.

Pricing

The full read on this project is a sign-in away — what it solves, who it serves, and where it sits in the market.