oscache页面局部缓存----使用

深藏阁楼爱情的钟 2022-06-16 03:07 169阅读 0赞

# 一.导包 #

1.commons-logging.jar

2.oscache-2.4.1.jar

二.jsp页面测试

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三.oscache.properties将缓存信息保存（可选可不选）

# CACHE IN MEMORY
    #
    # If you want to disable memory caching, just uncomment this line.
    #
    # cache.memory=false
    
    
    # CACHE KEY
    #
    # This is the key that will be used to store the cache in the application
    # and session scope.
    #
    # If you want to set the cache key to anything other than the default
    # uncomment this line and change the cache.key
    #
    # cache.key=__oscache_cache
    
    
    # USE HOST DOMAIN NAME IN KEY
    #
    # Servers for multiple host domains may wish to add host name info to
    # the generation of the key.  If this is true, then uncomment the
    # following line.
    #
    # cache.use.host.domain.in.key=true
    
    
    # CACHE LISTENERS
    #
    # These hook OSCache events and perform various actions such as logging
    # cache hits and misses, or broadcasting to other cache instances across a cluster.
    # See the documentation for further information.
    #
    # cache.event.listeners=com.opensymphony.oscache.plugins.clustersupport.JMSBroadcastingListener,  \
    #                       com.opensymphony.oscache.extra.CacheEntryEventListenerImpl,               \
    #                       com.opensymphony.oscache.extra.CacheMapAccessEventListenerImpl,           \
    #                       com.opensymphony.oscache.extra.ScopeEventListenerImpl
    
    
    # CACHE PERSISTENCE CLASS
    #
    # Specify the class to use for persistence. If you use the supplied DiskPersistenceListener,
    # don't forget to supply the cache.path property to specify the location of the cache
    # directory.
    # 
    # If a persistence class is not specified, OSCache will use memory caching only.
    #
    # cache.persistence.class=com.opensymphony.oscache.plugins.diskpersistence.DiskPersistenceListener
    
    # CACHE OVERFLOW PERSISTENCE
    # Use persistent cache in overflow or not. The default value is false, which means
    # the persistent cache will be used at all times for every entry.  true is the recommended setting.
    #
    # cache.persistence.overflow.only=true
    
    
    # CACHE DIRECTORY
    #
    # This is the directory on disk where caches will be stored by the DiskPersistenceListener.
    # it will be created if it doesn't already exist. Remember that OSCache must have
    # write permission to this directory.
    #
    # Note: for Windows machines, this needs \ to be escaped
    # ie Windows:
    # cache.path=c:\\myapp\\cache
    # or *ix:
    # cache.path=/opt/myapp/cache
    #
    # cache.path=c:\\app\\cache
    
    
    # CACHE ALGORITHM
    #
    # Default cache algorithm to use. Note that in order to use an algorithm
    # the cache size must also be specified. If the cache size is not specified,
    # the cache algorithm will be Unlimited cache.
    #
    # cache.algorithm=com.opensymphony.oscache.base.algorithm.LRUCache
    # cache.algorithm=com.opensymphony.oscache.base.algorithm.FIFOCache
    # cache.algorithm=com.opensymphony.oscache.base.algorithm.UnlimitedCache
    
    # THREAD BLOCKING BEHAVIOR
    #
    # When a request is made for a stale cache entry, it is possible that another thread is already
    # in the process of rebuilding that entry. This setting specifies how OSCache handles the
    # subsequent 'non-building' threads. The default behaviour (cache.blocking=false) is to serve
    # the old content to subsequent threads until the cache entry has been updated. This provides
    # the best performance (at the cost of serving slightly stale data). When blocking is enabled,
    # threads will instead block until the new cache entry is ready to be served. Once the new entry
    # is put in the cache the blocked threads will be restarted and given the new entry.
    # Note that even if blocking is disabled, when there is no stale data available to be served
    # threads will block until the data is added to the cache by the thread that is responsible
    # for building the data.
    #
    # cache.blocking=false
    
    
    # CACHE SIZE
    #
    # Default cache size in number of items. If a size is specified but not
    # an algorithm, the cache algorithm used will be LRUCache.
    #
    cache.capacity=1000
    
    
    # CACHE UNLIMITED DISK
    # Use unlimited disk cache or not. The default value is false, which means
    # the disk cache will be limited in size to the value specified by cache.capacity.
    #
    # cache.unlimited.disk=false
    
    
    # JMS CLUSTER PROPERTIES
    #
    # Configuration properties for JMS clustering. See the clustering documentation
    # for more information on these settings.
    #
    #cache.cluster.jms.topic.factory=java:comp/env/jms/TopicConnectionFactory
    #cache.cluster.jms.topic.name=java:comp/env/jms/OSCacheTopic
    #cache.cluster.jms.node.name=node1
    
    
    # JAVAGROUPS CLUSTER PROPERTIES
    #
    # Configuration properites for the JavaGroups clustering. Only one of these
    # should be specified. Default values (as shown below) will be used if niether
    # property is set. See the clustering documentation and the JavaGroups project
    # (www.javagroups.com) for more information on these settings.
    #
    #cache.cluster.properties=UDP(mcast_addr=231.12.21.132;mcast_port=45566;ip_ttl=32;\
    #mcast_send_buf_size=150000;mcast_recv_buf_size=80000):\
    #PING(timeout=2000;num_initial_members=3):\
    #MERGE2(min_interval=5000;max_interval=10000):\
    #FD_SOCK:VERIFY_SUSPECT(timeout=1500):\
    #pbcast.NAKACK(gc_lag=50;retransmit_timeout=300,600,1200,2400,4800;max_xmit_size=8192):\
    #UNICAST(timeout=300,600,1200,2400):\
    #pbcast.STABLE(desired_avg_gossip=20000):\
    #FRAG(frag_size=8096;down_thread=false;up_thread=false):\
    #pbcast.GMS(join_timeout=5000;join_retry_timeout=2000;shun=false;print_local_addr=true)
    #cache.cluster.multicast.ip=231.12.21.132

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[Center]: /images/20220616/f3a4d9b4cd93417d95c37467bb0a8114.png
[Center 1]: /images/20220616/2350cf1d1dac4ae9b3c8b87a73076103.png