Oscache is currently using the most wide cache scheme, JBoss, Hibernate, Spring, etc.
Let's take a brief introduction to the configuration and use of OSCache.
1. Installation process
Download the right OSCache version from http://www.opensymphony.com/oscache/download.html,
I downloaded the OSCache-2.0.2-Full version.
Unzip the downloaded file to the specified directory
Get the oscache.jar file from the decompression catalog to the / web-inf / lib or the corresponding library directory,
The JAR file name may contain version number and the release date information of this version, such as oscache-2.0.2-22jan04.jar
If your JDK version is 1.3.x, it is recommended to add a Commons-Collections.jar package of Apache Common lib in the lib.
If JDK is 1.4 or more
Get an OSCACHE.PROPERTIES file from the SRC or ETC directory, put it into the SRC root directory or publish environment / web-inf / class directory
If you need to create a disk cache, you must modify the cache.path information in oscache.properties (remove the previous # annotation).
WIN path is similar to c: // app // cache
UNIX class path Similar to / OPT / MyApp / Cache
Copy OSCache Tag Library File OSCACHE.TLD to / Web-INF / CLASSES directory.
Now your application directory is similar as follows:
$ Web_Application / Web-inf / lib / oscache.jar
$ Web_Application / Web-INF / CLASSES / OSCACHE.PROPERTIES
$ Web_Application / Web-INF / CLASSES / OSCACHE.TLD
Add the following code to the web.xml file
In order to facilitate the debug log output, you must join Commons-Logging.jar and Log4j-1.2.8.jar to the current class library path
Add the following two log output profiles in the SRC directory:
Log4j.properties file content is:
Log4j.rootlogger = Debug, stdout, file
Log4j.appender.stdout = org.apache.log4j.consoleAppender
Log4j.Appender.stdout.Layout = Org.apache.log4j.patternlayout
Log4j.Appender.stdout.Layout.conversionPattern = [start]% d {yyyy / mm / dd / hh: mm: ss} [DATE]% N% P [priority]% N% x [NDC]% N% T [ Thread] N% C [category]% N% M [Message]% N% N
Log4j.Appender.file = org.apache.log4j.rollingfileappender
Log4j.Appender.file.file = oscache.log
Log4j.Appender.File.maxFileSize = 100KB
Log4j.Appender.file.maxbackupindex = 5
Log4j.Appender.File.Layout = Org.apache.log4j.patternlayout
LOG4J.APPENDER.FILE.LAYOUT.CONVERSIONPATTERN = [START]% D {YYYY / MM / DD / HH: MM: SS} [DATE]% N% P [Priority]% N% X [N% x [NDC]% N% T [ Thread] N% C [category]% N% M [Message]% n% nlog4j.logger.org.apache.commons = error
Log4j.logger.com.opensymphony.oscache.base = info
Commons-logging.properties file content
Org.apache.commons.logging.log = org.apache.commons.logging.Impl.log4jcategoryLog
2.Scache.properties file configuration wizard
Cache.memory
The value is True or False, which is default to cache in memory.
If set to false, the cache can only cache to the database or hard disk, what is the meaning of cache :)
Cache.capacity
Number of cache elements
Cache.Persistence.class
Persistence cache class, such open, you must set cache.path information
Cache.cluster
Set information for cluster.
Such as
Cache.cluster.multicast.ip is a broadcast IP address
Cache.cluster.properties is cluster properties
3. Basic usage of Soscache
Cache1.jsp contents are as follows
<% @ Page Import = "java.util. *"%>
<% @ Taglib Uri = "OSCache" prefix = "cache"%>
Date without caching: <% = new date ()%>
Refresh the cache every 30 seconds: <% = new Date ()%>
Date of manual refresh cache: <% = new date ()%>
Cache2.jsp executes the manual refresh page as follows
<% @ Taglib Uri = "OSCache" prefix = "cache"%>
Cache has been refreshed ...
You can also define the effective range of cache by the following statement, if you do not define scope, Scope defaults to Applcation
...
4. Cache filter Cachefilter
You can define a cache filter in Web.xml to define a cache for a particular resource.
The above definition will cache all .jsp pages, cache refresh time is 60 seconds, cache scope is session
Note that Cachefilter only captures a page request of the HTTP header 200, that is, only to caches the errorless request,
And don't work for other requests (such as 500, 404, 400)
Programming
