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• Session size is configurable, whereas application can not specify a session time out threshold. The default is 300 seconds. In some cases, applications need to reduce or increase the caching time, it's good to be configurable.

3. Release memory for idle ssl connection

• When we no longer need a read buffer or a write buffer for a given SSL, then release the memory we were using to hold it. Released memory is either appended to a list of unused RAM chunks on the SSL_CTX, or simply freed if the list of unused chunks would become longer than SSL_CTX->freelist_max_len, which defaults to 32. Using this flag can save around 34k per idle SSL connection. This flag has no effect on SSL v2 connections, or on DTLS connections.

  Code Block
  #ifdef SSL_MODE_RELEASE_BUFFERS SSL_CTX_set_mode(ctx, SSL_MODE_RELEASE_BUFFERS); #endif

  3. Expose API to extract peer certificate data

• When verifying peer certificates, A few customers expect to obtain the specific cert data (i.e. subject, issuer info) and forward them to origin servers. It's better to expose API to extract peer certificate data.
• Status: https://issues.apache.org/jira/browse/TS-2210

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