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  * Licensed to the Apache Software Foundation (ASF) under one or more
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  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You under the Apache License, Version 2.0
  * (the "License"); you may not use this file except in compliance with
  * the License.  You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.apache.catalina.session;

Implementation of the Manager interface that makes use of a Store to swap active Sessions to disk. It can be configured to achieve several different goals:
  • Persist sessions across restarts of the Container
  • Fault tolerance, keep sessions backed up on disk to allow recovery in the event of unplanned restarts.
  • Limit the number of active sessions kept in memory by swapping less active sessions out to disk.
  • Author(s):
    Kief Morris (
    $Revision: 515 $
    public final class PersistentManager extends PersistentManagerBase {
        // ----------------------------------------------------- Instance Variables

    The descriptive information about this implementation.
        private static final String info = "PersistentManager/1.0";

    The descriptive name of this Manager implementation (for logging).
        protected static String name = "PersistentManager";
        // ------------------------------------------------------------- Properties

    Return descriptive information about this Manager implementation and the corresponding version number, in the format <description>/<version>.
        public String getInfo() {
            return ();

    Return the descriptive short name of this Manager implementation.
        public String getName() {
            return ();

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