• jpa-入门.缓存配置ehcache.xml


    <ehcache>

        <!-- Sets the path to the directory where cache .data files are created.

             If the path is a Java System Property it is replaced by
             its value in the running VM.

             The following properties are translated:
             user.home - User's home directory
             user.dir - User's current working directory
             java.io.tmpdir - Default temp file path -->
        <diskStore path="java.io.tmpdir"/>


        <!--Default Cache configuration. These will applied to caches programmatically created through
            the CacheManager.

            The following attributes are required for defaultCache:

            maxInMemory       - Sets the maximum number of objects that will be created in memory
            eternal           - Sets whether elements are eternal. If eternal,  timeouts are ignored and the element
                                is never expired.
            timeToIdleSeconds - Sets the time to idle for an element before it expires. Is only used
                                if the element is not eternal. Idle time is now - last accessed time
            timeToLiveSeconds - Sets the time to live for an element before it expires. Is only used
                                if the element is not eternal. TTL is now - creation time
            overflowToDisk    - Sets whether elements can overflow to disk when the in-memory cache
                                has reached the maxInMemory limit.

            -->
        <defaultCache
            maxElementsInMemory="10000"
            eternal="false"
            timeToIdleSeconds="120"
            timeToLiveSeconds="120"
            overflowToDisk="true"
            />

        <!--Predefined caches.  Add your cache configuration settings here.
            If you do not have a configuration for your cache a WARNING will be issued when the
            CacheManager starts

            The following attributes are required for defaultCache:

            name              - Sets the name of the cache. This is used to identify the cache. It must be unique.
            maxInMemory       - Sets the maximum number of objects that will be created in memory
            eternal           - Sets whether elements are eternal. If eternal,  timeouts are ignored and the element
                                is never expired.
            timeToIdleSeconds - Sets the time to idle for an element before it expires. Is only used
                                if the element is not eternal. Idle time is now - last accessed time
            timeToLiveSeconds - Sets the time to live for an element before it expires. Is only used
                                if the element is not eternal. TTL is now - creation time
            overflowToDisk    - Sets whether elements can overflow to disk when the in-memory cache
                                has reached the maxInMemory limit.

            -->

        <!-- Sample cache named sampleCache1
            This cache contains a maximum in memory of 10000 elements, and will expire
            an element if it is idle for more than 5 minutes and lives for more than
            10 minutes.

            If there are more than 10000 elements it will overflow to the
            disk cache, which in this configuration will go to wherever java.io.tmp is
            defined on your system. On a standard Linux system this will be /tmp"
            -->
        <cache name="sampleCache1"
            maxElementsInMemory="10000"
            eternal="false"
            timeToIdleSeconds="300"
            timeToLiveSeconds="600"
            overflowToDisk="true"
            />

        <!-- Sample cache named sampleCache2
            This cache contains 1000 elements. Elements will always be held in memory.
            They are not expired. -->
        <cache name="sampleCache2"
            maxElementsInMemory="1000"
            eternal="true"
            timeToIdleSeconds="0"
            timeToLiveSeconds="0"
            overflowToDisk="false"
            /> -->

        <!-- Place configuration for your caches following -->

    </ehcache>

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  • 原文地址:https://www.cnblogs.com/lshan/p/8627358.html
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