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Task Turnstile

A thread-safe named task lifecycle manager for .NET. Prevents duplicate background job execution across threads and — optionally — across multiple application instances via a distributed backing store.

Think of it like a turnstile. Every job that wants to run must push through first. Only one can hold the bar at a time — others wait their turn or are sent away. When the job is done, the bar rotates and the next one can step through.

Pages

Setup	Registering the store — in-memory, Redis, SQL Server, shared IDistributedCache — and all configuration options
API Reference	Full ITaskStateManager method reference
Patterns	Real-world usage examples — Coravel, BackgroundService, manual start/stop
Testing	FakeTaskStateManager and manual mocking with Moq / NSubstitute
Custom Store	Implementing ITaskStateStore to back the manager with any storage
Migrating to v2	Breaking changes and migration guide for v2.0