IAsyncEnumerable<T> in C#: Streaming Data Without Loading Everything into Memory

📰 Dev.to · Adrián Bailador

Learn to use IAsyncEnumerable to stream large datasets without loading everything into memory, preventing server crashes

intermediate Published 5 Apr 2026
Action Steps
  1. Use IAsyncEnumerable to stream data from a database
  2. Configure the database query to yield results asynchronously
  3. Implement paging or chunking to limit the amount of data streamed at once
  4. Test the implementation with a large dataset to ensure memory usage is efficient
  5. Apply this technique to other areas of the application where large datasets are used
Who Needs to Know This

Backend developers and engineers working with large datasets can benefit from this technique to improve server performance and prevent crashes

Key Insight

💡 IAsyncEnumerable allows you to process large datasets without loading everything into memory, reducing the risk of server crashes

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🚀 Stream large datasets without crashing your server! Learn how to use IAsyncEnumerable in C#

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My API crashed in production. 500,000 database records, a List, and a server with 8GB RAM. The math...
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