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Posted to commits@wicket.apache.org by "Thomas Heigl (Jira)" <ji...@apache.org> on 2022/02/01 21:19:00 UTC

[jira] [Created] (WICKET-6952) Performance improvements for Strings.isEmpty

Thomas Heigl created WICKET-6952:
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             Summary: Performance improvements for Strings.isEmpty
                 Key: WICKET-6952
                 URL: https://issues.apache.org/jira/browse/WICKET-6952
             Project: Wicket
          Issue Type: Improvement
          Components: wicket-core
    Affects Versions: 9.7.0
            Reporter: Thomas Heigl
            Assignee: Thomas Heigl


{{Strings.isEmpty}} is one of the most called methods in our application and consistently shows up as hot in our production profiler.

Two simple performance optimizations can be tried:

- Overload the method with a {{String}} parameter, to help the JIT compiler with it's decision to inline the method
- Avoid calling {{String.trim}} if the first character isn't whitespace

See https://github.com/apache/wicket/pull/497.



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