Tuning Backend Connections

In the test environment, if the connections between Nginx and Memcached are short connections, the main thread of Memcached spends a great deal of time allocating connections to other threads. The core usage of the main thread reaches 100%, which becomes a performance bottleneck. Therefore, you need to set the Nginx-Memcached connections to persistent connections to reduce the overhead of the main thread and improve the overall performance of the server.

upstream memcached_backend{
server 172.19.22.53:11211;
keepalive 500; }