Adam Anderson created CXF-7716:
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Summary: IBM Performance Team has found several performance
increases
Key: CXF-7716
URL: https://issues.apache.org/jira/browse/CXF-7716
Project: CXF
Issue Type: Bug
Components: JAX-RS
Affects Versions: 3.2.4, 3.0.15
Reporter: Adam Anderson
Fix For: 3.2.5
Our performance team has identified several areas of improvement to reduce
garbage collection and CPU usage.
First, we reduced the amount of StringBuilders created in HTTPUtils.java and
ResourceUtils.java.
Second, we created JAXRSUtils.doMimeTypesIntersect() - a method similar to
JAXRSUtils.intersectMimeTypes - that doesn't create a HashSet but instead
returns a boolean when we just need to know if they intersect.
Third, we found that getting the annotations for parameters to create
constructor arguments in PerRequestResourceProvider.java is expensive, so we
cache them in the constructor instead of getting them via reflection every
request.
These changes combined result in a ~1.5-2% performance increase.
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