# JIT

热点代码 -> 机器码

![JIT](https://cdn.tobebetterjavaer.com/tobebetterjavaer/images/jvm/jit-9a62fc02-1a6a-451e-bb2b-19fc086d5be0.png)

- C1
  - `Client Complier`
  - 局部简单可靠优化
- C2
  - `Server Complier`
  - 全局优化