We have a Squid server A configured as a HTTPS reverse proxy for our internal application server, now we want to set up a Squid server B to use A as a sibling cache peer, but never get it work, when we download file through server B, it always download the file from parent instead of sibling, can you tell me how to troubleshoot it? Or sibling cache peer is not an option for a HTTPS reverse proxy? # Squid server A cache_replacement_policy lru memory_replacement_policy lru maximum_object_size 1024 MB maximum_object_size_in_memory 16 MB cache_dir aufs /usr/local/squid/var/cache 614400 256 256 cache_mem 40960 MB cache_store_log none cache_peer app.domain parent 9443 0 no-query originserver ssl login=PROXYPASS sslflags=DONT_VERIFY_PEER cache_peer_access app.domain allow all coredump_dir /usr/local/squid/var/cache http_port 3128 http_access allow all icp_port 3130 icp_access allow all https_port 9443 cert=/usr/local/squid/etc/server.pem accel key=/usr/local/squid/etc/privkey.pem vhost refresh_pattern . 0 20% 4320 buffered_logs on visible_hostname servera.domain access_log none # Squid server B cache_replacement_policy lru memory_replacement_policy lru maximum_object_size 1024 MB maximum_object_size_in_memory 16 MB cache_dir aufs /usr/local/squid/var/cache 614400 256 256 cache_mem 40960 MB cache_store_log none cache_peer app.domain parent 9443 0 no-query originserver ssl login=PROXYPASS sslflags=DONT_VERIFY_PEER cache_peer servera.domain sibling 3128 3130 weight=10 cache_peer_access app.domain allow all cache_peer_access servera.domain allow all coredump_dir /usr/local/squid/var/cache http_port 3128 http_access allow all icp_port 3130 icp_access allow all https_port 9443 cert=/usr/local/squid/etc/server.pem accel key=/usr/local/squid/etc/privkey.pem vhost refresh_pattern . 0 20% 4320 buffered_logs on visible_hostname serverb.domain access_log none -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Sibling-cache-peer-for-a-HTTPS-reverse-proxy-tp4667011.html Sent from the Squid - Users mailing list archive at Nabble.com.