Doğan Uçar • 7/29/2025

Fixing “Allowed memory size exhausted” in Symfony: When Doctrine Metadata Crashes Your Serializer

This article details a debugging journey for a 'memory size exhausted' error in a Symfony project using Doctrine and the Symfony serializer. It explains how the default serializer's use of Doctrine metadata can cause memory spikes when serializing entities with large fields. The post provides a practical solution: creating a lightweight serializer adapter that bypasses Doctrine metadata to prevent the crash.

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#memory management #php #Symfony