feat: add asyncLocalStorage option for external AsyncLocalStorage inj…#231
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katreniak wants to merge 1 commit intofastify:mainfrom
Open
feat: add asyncLocalStorage option for external AsyncLocalStorage inj…#231katreniak wants to merge 1 commit intofastify:mainfrom
katreniak wants to merge 1 commit intofastify:mainfrom
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…ection
Add an asyncLocalStorage plugin option to allow injecting an external
AsyncLocalStorage instance. This enables sharing a single AsyncLocalStorage
across multiple request sources in applications that handle requests from
various origins.
Use cases:
- Fastify HTTP requests
- Queue consumers
- Scheduled tasks and timers
- Other HTTP servers or frameworks
Previously, the plugin created its own AsyncLocalStorage instance, making it
difficult to maintain a unified request context across different entry points.
By providing the asyncLocalStorage option, users can now create a central
AsyncLocalStorage instance and share it across all request handlers, without
coupling non-HTTP code to Fastify.
Usage:
```
const sharedALS = new AsyncLocalStorage()
app.register(fastifyRequestContext, {
asyncLocalStorage: sharedALS
})
```
Breaking change: None.
* The plugin maintains backward compatibility by using
a default AsyncLocalStorage instance when the setter is not called.
* Exported asyncLocalStorage is untouched.
4 tasks
kibertoad
reviewed
Oct 28, 2025
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is this needed? we create it later again
Eomm
reviewed
Oct 28, 2025
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Eomm
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Eomm
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Good feature
I'm wondering if this feature is still needed:
https://github.com/fastify/fastify-request-context?tab=readme-ov-file#usage-outside-of-a-request
because it may creates some headache 🤔
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…ection
Add an asyncLocalStorage plugin option to allow injecting an external AsyncLocalStorage instance. This enables sharing a single AsyncLocalStorage across multiple request sources in applications that handle requests from various origins.
Use cases:
Previously, the plugin created its own AsyncLocalStorage instance, making it difficult to maintain a unified request context across different entry points. By providing the asyncLocalStorage option, users can now create a central AsyncLocalStorage instance and share it across all request handlers, without coupling non-HTTP code to Fastify.
Usage:
Breaking change: None.
Checklist
npm run test && npm run benchmark --if-presentand the Code of conduct