Cache Class Names (Sun Java System Web Server 6.1 SP9 Programmer's Guide to Web Applications)

Sun Java System Web Server 6.1 SP9 Programmer's Guide to Web Applications

Cache Class Names

The following table lists possible values of the cacheClassName property. The left column lists the value, and the right column describes the kind of cache the value specifies.

Table 6–28 cacheClassName Values


Value	Description
`com.sun.appserv.web.cache.LruCache`	A bounded cache with an LRU cache replacement policy.
`com.sun.appserv.web.cache.BaseCache`	An unbounded cache suitable if the maximum number of entries is known.
`com.sun.appserv.web.cache.MultiLruCache`	A cache suitable for a large number of entries (>4096). Uses the `MultiLRUSegmentSize` property.
`com.sun.appserv.web.cache.BoundedMultiLruCache`	A cache suitable for limiting the cache size by memory rather than number of entries. Uses the `MaxSize` property.

cache-helper

Specifies a class that implements the CacheHelper interface. For details, see CacheHelper Interface

Subelements

The following table describes subelements for the cache-helper element. The left column lists the subelement name, the middle column indicates the requirement rule, and the right column describes what the element does.

Table 6–29 cache-helper Subelements


Element	Required	Description
property	zero or more	Specifies a property, which contains a name and a value.

Attributes

The following table describes attributes for the cache-helper element. The left column lists the attribute name, the middle column indicates the default value, and the right column describes what the attribute does.

Table 6–30 cache-helper Attributes


Attribute	Default Value	Description
`name`	default	Specifies a unique name for the helper class, which is referenced in the cache-mapping element.
`class-name`	none	Specifies the fully qualified class name of the cache helper, which must implement the `com.sun.appserv.web.CacheHelper` interface.