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0 pointsgunnarmorling2y ago0 comments

I've written about two applications of custom JFR events in the past:

* Monitoring invocations of a REST API: https://www.morling.dev/blog/rest-api-monitoring-with-custom...

* Tracking SQL queries issued by your ORM: https://www.javaadvent.com/2021/12/keep-your-sql-in-check-wi...

The latter is about injecting event-emitting code with a Java Agent rather than manually implementing custom events (latest Hibernate ORM version comes with JFR support OOTB, too).

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gred2y ago· 1 in thread

> Monitoring invocations of a REST API

Yep, we use custom JFR events to track API calls and correlate them to other built-in JFR events and statistics (garbage collection, memory use, allocations, CPU use, deadlocks, etc).

parttimenerd2y ago

You might be interested in a proposal by Jaroslav Bachorik to add context into JFR. I wrote a short introduction on my blog "Putting JFR into Context" (https://mostlynerdless.de/blog/2023/10/19/putting-jfr-into-c...)

parttimenerd2y ago

Thank you Gunnar, I linked to your blog post (and even linked to it already in my previous blog post "Custom JFR Events: A Short Introduction" https://mostlynerdless.de/blog/2023/11/20/custom-jfr-events-...)

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