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1. Re: recommended approach to obtain the size (in bytes) of a cache region
1 of 1 people found this helpfulThere are a few ways that are agnostic to your configuration. You could take a heap dump at a specific time and get an estimation based on some heap analysis tools. I normally like using Eclipse MAT [1]. You could also use JOL [2] to estimate the size of your objects and you can get a rough estimate from there.
If you want though Infinispan has a configuration option to enabled heap based eviction [3]. This way your cache should never get larger than around that size. This however requires you to also store your objects as either BINARY or OFF-HEAP which both serialize the object into bytes, which are significantly easier to count
[1] Eclipse Memory Analyzer Open Source Project
[2] OpenJDK: jol
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2. Re: recommended approach to obtain the size (in bytes) of a cache region
william.burns, many thanks for your reply.
I'll follow the Heap Dump approach and analyse using Eclipse MAT. We're using JDG 6.x version, I suspect the "heap based" config is only available in Infinispan 9 and above, Right? I didn't know about OpenJDK JOL tool. I'll certainly take a look on it.
Thanks o/
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3. Re: recommended approach to obtain the size (in bytes) of a cache region
No problem. Hope you get everything figured out.
Yes, unfortunately the memory based eviction requires Infinispan 8 or JDG 7 and off heap requires Infinispan 9.