https://bz.apache.org/bugzilla/show_bug.cgi?id=58242
Bug ID: 58242
Summary: Scanning jars in classpath to get annotations in
parallel instead of synchronously
Product: Tomcat 9
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: major
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: 18616998...@163.com
During tomcat startup, it takes most of time on annotation scanning.
For our case, our apps have over 500 jars in class path.
Tomcat startup takes 28 seconds and annotation scanning takes 23 seconds.
So idea is: scan jars in parallel, per our benchmark testing, it could save 9
seconds. And jetty9 already support this feature.
This is a new feature indeed, not sure whether it's ok to file it in bugzilla.
Will file PR for this feature.
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