Hi~ I hava a squid cluster with two cache_peer using round-robin. Today, I want to add the third nginx, but it's load average increases quickly, and the netstat tell that the number of TIME_WAIT is more than 5000! I run "squidclient mgr:server_list" on the squid servers.The "OPEN CONNS" to old nginx is only digits, but three hundred to new nginx! I collect and count the access.log too,the number of "PARENT/old" is nearly same to "PARNET/new"... The cache_peer configure like following: cache_peer 10.2.3.4 parent 80 0 no-query round-robin originserver name=d1 cache_peer 10.2.3.5 parent 80 0 no-query round-robin originserver name=d2 cache_peer 10.2.3.6 parent 80 0 no-query round-robin originserver name=d3 cache_peer_domain d1 .test.com cache_peer_domain d2 .test.com cache_peer_domain d3 .test.com And the nginx servers' configure are exactly the same. Is there any wrong?