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What is a memory leak in .NET and how can it happen despite GC?

Ponu Maurya 165 23-Jun-2025
c# c# 
Updated on 23-Jun-2025
Ponu Maurya

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Ponu Maurya

Ponu Maurya

23-Jun-2025

Answer:
A memory leak occurs when memory that’s no longer needed is not released.

Causes:

  • Event handlers not unsubscribed (strong references remain).
  • Static fields holding object references.
  • Caching patterns without eviction.
  • Disposables not disposed.

Tools: Use dotMemory, PerfView, dotTrace, or Visual Studio Diagnostics Tools.

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