Remko Popma created LOG4J2-1611:
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Summary: Improve performance of
ThreadContextDataInjector.ForDefaultThreadContextMap
Key: LOG4J2-1611
URL: https://issues.apache.org/jira/browse/LOG4J2-1611
Project: Log4j 2
Issue Type: Improvement
Components: Core
Affects Versions: 2.7
Reporter: Remko Popma
Assignee: Remko Popma
Fix For: 2.7
Current implementation of
{{ThreadContextDataInjector.ForDefaultThreadContextMap::injectContextData}}
always copies all elements from the ThreadContext into the reused StringMap of
the LogEvent.
Since the DefaultThreadContextMap is used in web applications (when non-JDK
thread-locals are not available and Log4j is not garbage-free), we don't need
to worry about creating additional objects. We can speed up the
{{injectContextData}} method by wrapping the context data {{Map<String,
String>}} in a decorator object that implements the {{StringMap}} interface.
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