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Impress your colleagues with your knowledge about... RecyclableMemoryStream.

Sometimes when working with C# you discover some hidden gems. Some of them very useful, other ones a little bit harder to find a good way to benefit from their functionality. One of those hidden gems that I discovered some days ago is the RecyclableMemoryStream class. For this one I’m cheating a little bit as it is not part of the .NET Framework directly but released as a separate NuGet package by the Bing team.

What is it?

Microsoft.IO.RecyclableMemoryStream is a drop-in MemoryStream replacement with superior behavior for performance-critical systems. In particular it is optimized to do the following:

  • Eliminate Large Object Heap allocations by using pooled buffers
  • Incur far fewer gen 2 GCs, and spend far less time paused due to GC
  • Avoid memory leaks by having a bounded pool size
  • Avoid memory fragmentation
  • Provide excellent debuggability
  • Provide metrics for performance tracking

The code looks kinda boring as it uses the same semantics as the built-in MemoryStream class:

More information: http://www.philosophicalgeek.com/2015/02/06/announcing-microsoft-io-recycablememorystream/

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