How Beskar.Networking builds a near-zero-allocation MQTT broker on .NET 10

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A developer building Beskar.Networking has detailed how the project implements a high-performance MQTT broker supporting both v3.1.1 and v5.0 specifications on .NET 10. The core challenge was eliminating heap allocations caused by packet parsing, subscription matching, session tracking, and keep-alive monitoring at scale. To handle topic routing efficiently, the project uses a concurrent UTF-8 byte-based Trie structure with a custom stack-only enumerator that avoids splitting topic strings into heap-allocated arrays. Dictionary alternate lookups in modern .NET allow span-based node queries without converting memory slices into new byte arrays. A visitor pattern with stack-allocated structs further ensures that matching thousands of subscriptions per published message generates no garbage-collected objects.

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Classic BLoC vs BlocSignal: How Flutter handles rapid .add() event calls

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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