James Chaplin created WW-5035:
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Summary: Provide mechanism to clear OgnlUtil caches
Key: WW-5035
URL: https://issues.apache.org/jira/browse/WW-5035
Project: Struts 2
Issue Type: Improvement
Components: Core
Environment: All
Reporter: James Chaplin
Fix For: 2.5.21
Hello Apache Struts Team.
This Jira proposes to provide some cache-clearing methods for the OgnlUtil
class, as well as methods to check the current cache element count.
These methods will allow applications to clear the OgnlUtil expression cache
and BeanInfo cache when necessary (using application-specific usage profile).
Currently the only OgnlUtil cache control available to applications is to
enable/disable the OgnlUtil expressionCache
({{struts.ognl.enableExpressionCache flag}}).
Using the new methods applications that have resource (memory) leak issues with
the caches may be able to use the caches to gain some performance benefits,
while periodically clearing them to recover memory resources. Application
developers can determine how frequently (e.g. hourly, daily) such cache
clearing is needed.
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