Try to load a saved session (using session ID)
Try to load a saved session (using info about server)
Remove this session id from the cache, if it exists
Save a session on a best effort basis; the manager may not in fact be able to save the session for whatever reason; this is not an error. Caller cannot assume that calling save followed immediately by loadFrom* will result in a successful lookup.
Return the allowed lifetime of a session; beyond this time, sessions are not resumed. Returns 0 if unknown/no explicit expiration policy.
An implementation of TLSSessionManager that saves values in memory.