2 Replies Latest reply on Sep 26, 2018 5:28 PM by william.burns

LFU Eviction

marg Jun 15, 2015 11:58 AM

Hi,

I have a requirement to implement a LFU (Least Frequently Used) Eviction Strategy. I have been considering different approaches to this using infinispan but thought it would be worth asking if there are any plans to implement LFU and if so the timescale?

Thanks,

1. Re: LFU Eviction

s.lisovoy Sep 26, 2018 5:00 PM (in response to marg)

It's ridiculous, but its policy even declared on features page http://infinispan.org/features/
but in real - there no this policy at all.

It's a shame
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2. Re: LFU Eviction

william.burns Sep 26, 2018 5:28 PM (in response to s.lisovoy)

Infinispan supports TinyLFU via Caffeine when using an on heap based data container. This was changed in Infinispan 9.0 with [ISPN-6998] Replace bounded hash map with alternative - JBoss Issue Tracker

If you wish to find more info about it you can check out GitHub - ben-manes/caffeine: A high performance caching library for Java 8

You can also read more about eviction in Infinispan from Infinispan 9.4 User Guide

Note that when using off heap data container, we only support LRU eviction algorithm.
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