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home / developersection / interviews / what is a memory leak in .net and how can it happen despite gc?
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What is a memory leak in .NET and how can it happen despite GC?

Ponu Maurya 391 23 Jun 2025
c# c#
Updated 23 Jun 2025
Ponu Maurya
Ponu Maurya

Student

"Ponnu bio" likely refers to information about someone named Ponnu, or the scientific name of a plant. Based on the search results, "Ponnu" can be a name, a nickname, or a scientific name for a plant. It can also be used in relation to business, or even refer to a type of bio.

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Ponu Maurya
Ponu Maurya 23 Jun 2025
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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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