What does keep-alive ratio mean?
The keep-alive ratio shows up in the server_list cache manager page for Squid 2. This is a mechanism to try detecting neighbor caches which might not be able to deal with persistent connections. Every time we send a proxy-connection: keep-alive request header to a neighbor, we count how many times the neighbor sent us a proxy-connection: keep-alive reply header. Thus, the keep-alive ratio is the ratio of these two counters. If the ratio stays above 0.5, then we continue to assume the neighbor properly implements persistent connections. Otherwise, we will stop sending the keep-alive request header to that neighbor.
The keep-alive ratio shows up in the server_list cache manager page for Squid 2. This is a mechanism to try detecting neighbor caches which might not be able to deal with HTTP/1.1 persistent connections. Every time we send a proxy-connection: keep-alive request header to a neighbor, we count how many times the neighbor sent us a proxy-connection: keep-alive reply header. Thus, the keep-alive ratio is the ratio of these two counters. If the ratio stays above 0.5, then we continue to assume the neighbor properly implements persistent connections. Otherwise, we will stop sending the keep-alive request header to that neighbor.
The keep-alive ratio shows up in the server_list cache manager page. This is a mechanism to try detecting neighbor caches which might not be able to deal with persistent connections. Every time we send a proxy-connection: keep-alive request header to a neighbor, we count how many times the neighbor sent us a proxy-connection: keep-alive reply header. Thus, the keep-alive ratio is the ratio of these two counters. If the ratio stays above 0.5, then we continue to assume the neighbor properly implements persistent connections. Otherwise, we will stop sending the keep-alive request header to that neighbor.
