![]() Version: 9.4.27.v20200227 |
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When using the Jetty distribution, you will first need to enable the session-store-jdbc module for your Jetty base using the --add-to-start argument on the command line.
$ java -jar ../start.jar --create-startd
INFO : Base directory was modified
$ java -jar ../start.jar --add-to-start=session-store-jdbc
INFO : server transitively enabled, ini template available with --add-to-start=server
INFO : sessions transitively enabled, ini template available with --add-to-start=sessions
INFO : sessions/jdbc/datasource dynamic dependency of session-store-jdbc
INFO : session-store-jdbc initialized in ${jetty.base}/start.d/session-store-jdbc.ini
INFO : Base directory was modifiedDoing this enables the JDBC Session module and any dependent modules or files needed for it to run on the server.
The example above is using a fresh ${jetty.base} with nothing else enabled.
When the --add-to-start argument was added to the command line, it enabled the the session-store-jdbc module as well as the sessions and server modules, which are required for JDBC session management to operate.
In addition to adding these modules to the classpath of the server, several ini configuration files were added to the ${jetty.base}/start.d directory.
Opening the start.d/session-store-jdbc.ini will show a list of all the configurable options for the JDBC module:
# --------------------------------------- # Module: session-store-jdbc # Enables JDBC persistent/distributed session storage. # --------------------------------------- --module=session-store-jdbc ## ##JDBC Session properties ## #jetty.session.gracePeriod.seconds=3600 ## Connection type:Datasource db-connection-type=datasource #jetty.session.jdbc.datasourceName=/jdbc/sessions ## Connection type:driver #db-connection-type=driver #jetty.session.jdbc.driverClass= #jetty.session.jdbc.driverUrl= ## Session table schema #jetty.session.jdbc.schema.accessTimeColumn=accessTime #jetty.session.jdbc.schema.contextPathColumn=contextPath #jetty.session.jdbc.schema.cookieTimeColumn=cookieTime #jetty.session.jdbc.schema.createTimeColumn=createTime #jetty.session.jdbc.schema.expiryTimeColumn=expiryTime #jetty.session.jdbc.schema.lastAccessTimeColumn=lastAccessTime #jetty.session.jdbc.schema.lastSavedTimeColumn=lastSavedTime #jetty.session.jdbc.schema.idColumn=sessionId #jetty.session.jdbc.schema.lastNodeColumn=lastNode #jetty.session.jdbc.schema.virtualHostColumn=virtualHost #jetty.session.jdbc.schema.maxIntervalColumn=maxInterval #jetty.session.jdbc.schema.mapColumn=map #jetty.session.jdbc.schema.table=JettySessions
By default whenever the last concurrent request leaves a session, that session is always persisted via the SessionDataStore, even if the only thing that changed on the session is its updated last access time.
A non-zero value means that the SessionDataStore will skip persisting the session if only the access time changed, and it has been less than savePeriod seconds since the last time the session was written.
Note
Configuring
savePeriodis useful if your persistence technology is very slow/costly for writes. In a clustered environment, there is a risk of the last access time of the session being out-of-date in the shared store for up tosavePeriodseconds. This allows the possibility that a node may prematurely expire the session, even though it is in use by another node. Thorough consideration of themaxIdleTimeof the session when setting thesavePeriodis imperative - there is no point in setting asavePeriodthat is larger than themaxIdleTime.
datasource or driver depending on the type of connection being used.com.mysql.jdbc.Driverjdbc:mysql://127.0.0.1:3306/sessions?user=sessionsadmin.The jetty.sessionTableSchema values represent the names for the columns in the JDBC database and can be changed to suit your environment.