reuse proxy.Request and redis.Resp in proxy #1561
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proxy 处理请求的过程中经常需要分配
proxy.Request和redis.Resp两种对象。这个 PR 通过sync.Pool进行了复用,应当可以降低GC压力。proxy.Requestandredis.Respis allocated most often in request processing. This PR try to reuse these objects usingsync.Poolwhich should reduce the GC pressure.