There is no affinity on the transaction based on the origin server. The client connection is assigned to a thread using round robin.
The connection pools will grow as large as they need to fulfill the incoming requests. There is generally more connections to the origin when using thread pools. There is a way to set a maximum number of connections to the origin using server_max_connections and origin_max_connections. We are working on using session tickets to the origin to reduce the amount of overhead in creating a new TLS connections. Docs: https://docs.trafficserver.apache.org/en/latest/admin-guide/files/records.config.en.html?highlight=max%20origin#proxy-config-http-server-max-connections <https://docs.trafficserver.apache.org/en/latest/admin-guide/files/records.config.en.html?highlight=max%20origin#proxy-config-http-server-max-connections> -Bryan > On Jan 5, 2017, at 11:44 AM, Vamsi Ambati <va...@neumob.com> wrote: > > We are using ATS 7.0 and trying to understand the server session pool > sharing > We have found a configuration attribute > proxy.config.http.server_session_sharing.pool which takes values as > ‘global’/‘thread’. > My understanding for the value of ‘thread’ is that each thread maintains the > server session pool and not shared by other threads. > > My question is , Do ATS for any two Http transactions whose origin server is > same say like abc.com affines to the same thread ? > If so, how big is the pool ? How many max sessions will be accumulated in > the pool ?Would these values changes for ‘thread’ and ‘global’ ? > My question is from the perspective of reusing the SSL server sessions as > much as possible . > > > > Regards > Vamsi