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Microsoft.IO.RecyclableMemoryStream
A library to provide pooling for .NET MemoryStream objects to improve application performance.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
There are some known performance issues when using memorystreams. Microsoft themselves created a nuget package as a drop in replacement: https://github.com/microsoft/Microsoft.IO.RecyclableMemoryStream They talk about some of the issues in the readme, I suggest you take a look and see if anything applies to your use case.
NOTE:
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Hence, a higher number means a more popular project.