[jira] [Created] (WICKET-6991) ResourceAggregator is resizing the StringBuilder several times.

[Andrea Del Bene (Jira)]

Title: Message Title

Andrea Del Bene created an issue   Wicket / WICKET-6991 ResourceAggregator is resizing the StringBuilder several times. Issue Type: Improvement Affects Versions: 9.10.0 Assignee: Unassigned Created: 28/Jun/22 21:09 Fix Versions: 10.0.0, 9.11.0 Priority: Minor Reporter: Andrea Del Bene ResourceAggregator is resizing the StringBuilder several times, and then calling toString() on the result. In a few of our pages, this StringBuilder grows to ~650KB in size, which happens through a series of resizes and copies. We should count up the sizes ahead of time, but can't as the OnEventHeaderItem allocates a buffer when getCompleteJavaScript is called. Instead make an estimate of the size of the builder to avoid repeated resizing and array copies. Also, remove redundant toString() call. This creates a copy of the ~650KB byte array into a new String instance, which isn't needed. The subsequent concatenation in the render() call should use the underlying byte[] in the StringBuilder on newer JDK versions with more advanced JEP 280 implementations.   Add Comment   This message was sent by Atlassian Jira (v8.20.10#820010-sha1:ace47f9)