使用限制

对于客户端、upstream 都可以设置 keepalive 选项。

客户端设置

  • keepalive_requests

    The number of requests a client can make over a single keepalive connection. The default is 100, but a much higher value can be especially useful for testing with a load‑generation tool, which generally sends a large number of requests from a single client.

  • keepalive_timeout

    How long an idle keepalive connection remains open.default 75000 ms.

upstream 设置

  • keepalive

    The number of idle keepalive connections to an upstream server that remain open for each worker process. There is no default value.

示例

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upstream memcached_backend {
    server 127.0.0.1:11211;
    server 10.0.0.2:11211;

    keepalive 32;
}