Performance Improvements
------------------------
Key: MYFACES-1749
URL: https://issues.apache.org/jira/browse/MYFACES-1749
Project: MyFaces Core
Issue Type: Improvement
Affects Versions: 1.2.1-SNAPSHOT
Reporter: Michael Kurz
Fix For: 1.2.1-SNAPSHOT
Attachments: myfaces1749-patch.zip
Last week I did some JMeter testing, profiling and code checking on MyFaces to
try increase the overall performance. Here are my suggestions for improvement:
*) _ComponentAttributesMap
I introduced a cache for maps with component attributes. This cache avoids
rebuilding the map for every instance of the same component class. It is
implemented using a WeakHashMap to allow the GC to remove entries that are not
referenced in any instance.
*) UIComponentBase
Made a few changes in isIdValid as it is called quite often. The new id is now
checked against the old id and if it is the same it is assumed as valid (avoids
checking chars). Additionally I use isLetterOrDigit() and access string chars
directly insted of fetching an array first.
*) ImplicitObjectResolver
I replaced List with Map to avoid iteration over lists.
*) HtmlResponseWriterImpl
Use new method of HTMLEncoder for char[]
*) HTMLEncoder
Improved performance of encode mthod and added a new one that takes a char[]
und directly writes to a writer.
*) UnicodeEncoder
Replaced StringBuffer with StringBuilder.
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