[WW-3577] JspFactory.getDefaultFactory() is synchronized, We can cache the return value to improve performance

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.1.1
• Fix Version/s: 2.2.3
• Component/s: Dispatch Filter
• Assignee: Lukasz Lenart
• Reporter: Xiaoming Shi
• Created: 17/Feb/11 16:47
• Updated: 28/Oct/12 22:11
• Resolved: 24/Feb/11 07:14

Description

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
(Similar to the Apache Bug, https://issues.apache.org/bugzilla/show_bug.cgi?id=44408)