Thomas Heigl created WICKET-6830:
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Summary: Convert Behaviors into a static utility class to reduce
allocations
Key: WICKET-6830
URL: https://issues.apache.org/jira/browse/WICKET-6830
Project: Wicket
Issue Type: Improvement
Components: wicket-core
Affects Versions: 9.0.0
Reporter: Thomas Heigl
Assignee: Thomas Heigl
Attachments: image-2020-09-13-11-07-51-274.png
Under moderate load, my application allocates hundreds of MiB a minute in
{{Behaviors}} objects:
!image-2020-09-13-11-07-51-274.png|width=362,height=376!
{{Behaviors}} is a utility class to manage behaviors associated with
components. Instead of expsosing static methods, {{Behaviors}} is instantiated
with the target component instance on every invocation. E.g.:
{code:java}
new Behaviors(this).onRemove(this); {code}
This is slightly "more OO" than a static utility class, but it allocates on
every call. This can easily happen hundreds of times per request.
I suggest to turn {{Behaviors}} into a simple static utility class and use it
like this:
{code:java}
Behaviors.onRemove(this); {code}
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