uWSGI keepalive

Question

有可能以某种方式通过uwsgi的keepalive限制吗？如果不是,那么持久连接实现的最佳方式是什么.我正在使用NGiNX + uWSGI(Python),我希望客户端从服务器获得异步更新.

Answer 1

如果您通过http收到请求，则UWSGI通过--http-keepalive选项支持保持活动。

/tmp$ cat app.py
def application(env, start_response):
    content = b"Hello World"
    start_response('200 OK', [
        ('Content-Type','text/html'),
        ('Content-Length', str(len(content))),
    ])
    return [content]

运行：

/tmp$ uwsgi --http=:8000 --http-keepalive -w app &> /dev/null

我们可以connect通过strace 查看调用：

~$ strace -econnect wrk -d 10 -t 1 -c 1 http://127.0.0.1:8000 
connect(3, {sa_family=AF_INET, sin_port=htons(8000), sin_addr=inet_addr("127.0.0.1")}, 16) = 0
Running 10s test @ http://127.0.0.1:8000
  1 threads and 1 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency    92.32us   56.14us   2.81ms   97.20%
    Req/Sec    11.10k   389.34    11.84k    68.32%
  111505 requests in 10.10s, 7.98MB read
Requests/sec:  11040.50
Transfer/sec:    808.63KB
+++ exited with 0 +++

看到？只有一个连接。