A <code>SSLSessionContext</code> represents a set of <code>SSLSession</code>s associated with a single entity. For example, it could be associated with a server or client who participates in many sessions concurrently. <p> Not all environments will contain session contexts. <p> There are <code>SSLSessionContext</code> parameters that affect how sessions are stored: <UL> <LI>Sessions can be set to expire after a specified time limit. <LI>The number of sessions that can be stored in context can be limited. </UL> A session can be retrieved based on its session id, and all session id's in a <code>SSLSessionContext</code> can be listed.