Version: 9.4.12.v20180830
Version: 9.4.12.v20180830 |
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If your chosen persistence technology is slow, it can be helpful to locally cache the session data.
The CachingSessionDataStore is a special type of SessionDataStore that locally caches session data, which makes reads faster. It writes-through to your chosen type of SessionDataStore when session data changes.
The MemcachedSessionDataMap uses memcached to perform caching.
To enable it with the Jetty distribution, enable the session-store-cache module, along with your chosen session-store-xxxx module, and optionally the session-cache-hash or session-cache-null modules.
After enabling, the $jetty.base/start.d/session-store-cache.ini file will be generated:
--module=session-store-cache ## Session Data Cache type: xmemcached session-data-cache=xmemcached #jetty.session.memcached.host=localhost #jetty.session.memcached.port=11211 #jetty.session.memcached.expirySec= #jetty.session.memcached.heartbeats=true
The configuration properties are:
localhost.
This is the host on which the memcached server resides.11211.
This is the port on which the memcached server is listening.0.
This is the length of time in seconds that an item can remain in the memcached cache, where 0 indicates indefinitely.true.
Whether or not the memcached system should generate heartbeats.