JspFactory.getDefaultFactory() is synchronized, We can cache the return value
to improve performance
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Key: WW-3577
URL: https://issues.apache.org/jira/browse/WW-3577
Project: Struts 2
Issue Type: Bug
Components: Dispatch Filter
Affects Versions: 2.2.1.1
Reporter: Xiaoming Shi
JspFactory.getDefaultFactory() is synchronized, we can cache the return value
to improve performance.
In the function doExecute(),
./src/core/src/main/java/org/apache/struts2/dispatcher/VelocityResult.java
line: 122, 137
The value returned by JspFactory.getDefaultFactory() can be cached to reduce
race and improve performance
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