Improve class loading performance (#23)

Improve class loading performance (#23)

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	wojciech.kapcia@tigase.net opened 4 years ago Perform class loading and filtering in parallel (stream comes to mind) should speed up the process, possible candidates: tigase-utils: `tigase.util.ClassUtil#getClassesFromNames(java.util.Set<java.lang.String>, java.util.function.Predicate<java.lang.String>)` `tigase.util.ClassUtil#getClassesFromClassPath(java.util.function.Predicate<java.lang.String>)` tigase-server: `tigase.kernel.beans.config.AbstractBeanConfigurator#getBeanClassesFromAnnotations` places where `tigase.util.reflection.ClassUtilBean#getAllClasses()` is used and looped It may be a good idea to use JMH (vide https://github.com/tigase/tigase-jmh-benchmarks)
	wojciech.kapcia@tigase.net commented 4 years ago @andrzej.wojcik I toyed with it a bit and: `getClassesFromNames` - this one short-cirquites and it's quite fast `getClassesFromClassPath` - this one finishes in ~75ms (and my quick attempt at parallel stream bumped it 10x) `getBeanClassesFromAnnotations` in general finishes in 0ms Not sure if there is any room to improvements here and #server-1210 would give more benefits.
	Andrzej Wójcik (Tigase) commented 4 years ago @wojtek I suppose that this may be slow when you do not have an SSD. Have you checked on AWS-EC2? I suppose it could be slower, but with your measures I should not have a huge impact. I suppose we could skip this task. If you agree, then please close it.
	wojciech.kapcia@tigase.net commented 4 years ago No, I haven't checked on AWS, but it should have minimal impact there.

Type	Task
Priority	Normal
Assignee	Andrzej Wójcik (Tigase)

Child Issue

Parent Issue

tigase/_server/server-core#1209

Improve startup performance

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Reference

tigase/_server/tigase-utils#23

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