...

• The client can decipher the data only once it has received a full record over SSL. The record size can have significant impact on the page load time performance of the application. No limitation on record size means that clients might have to download up to 16KB of data before starting to process them, whereas very small records incur a larger overhead due to record framing. The suggestion is to configure the TLS record size to fit into a single TCP segment, this can improve page load times on browsers located over high latency or low bandwidth networks.
• http://host.comhttp://www.igvita.com/2013/10/24/optimizing-tls-record-size-and-buffering-latency/
• Status:

3. Configurable session time

...

• Application use ATS to verify peer certificate, and expect some specific cert data (i.e. subject, issuer info) can be forwarded to orgin servers as well. It's better to expose API to extract peer certificate data.
• Status: https://issues.apache.org/jira/browse/TS-2210^{Image Added}

5. SSL_read size threshold

...