The SSL cache

The SSL cache is used to store session ids from the negotiation between clients and CICS®.

The SSL cache allows CICS to perform partial handshakes with clients that it has previously authenticated. In a local CICS region, the SSL cache is part of the enclave for the S8 TCBs. You have the option of sharing the SSL cache across a sysplex if this is appropriate for your CICS system. You can use sysplex caching if you have multiple CICS socket-owning regions that accept SSL connections at the same IP address.

If you want to share the cache between regions, activate the system SSL started task GSKSRVR and use the system initialization parameter SSLCACHE. The default is to use the local region cache, but you can change this by specifying the option SYSPLEX. CICS will use the SSL cache in the coupling facility instead to store session ids.