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Possible memory leakage when using ClearScript 7.5.1 with SSR.Net engine pooling #2
There appears to be a memory‑related regression when SSR.Net is used together with ClearScript 7.5.1. After upgrading ClearScript, applications using JavaScriptEnginePool show steadily increasing memory usage, especially under load. The issue seems related to changes in ClearScript 7.5.1 around explicit resource management and disposal of V8 objects.
Because SSR.Net reuses V8 engines through pooling, it may not be fully compatible with the changes introduced in ClearScript 7.5.1.
We unfortunately didn’t notice this before deploying to production, but we were able to reproduce it with a k6 load test in other environments as well.
changed the title [-]Memory leak Possible memory leakage when using ClearScript 7.5.1 with SSR.Net engine pooling[/-][+]Possible memory leakage when using ClearScript 7.5.1 with SSR.Net engine pooling[/+]on May 26, 2026
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[-]Memory leak Possible memory leakage when using ClearScript 7.5.1 with SSR.Net engine pooling[/-][+]Possible memory leakage when using ClearScript 7.5.1 with SSR.Net engine pooling[/+]