Recurring Cloudflare Workers Error 1101 with Random I/O Exception
Hi,
we are experiencing recurring errors with our Cloudflare Workers and we can’t pinpoint the exact cause.
In the browser, this message appears:
pgsql
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Error 1101 Ray ID: [varies each time]
Worker threw exception
What happened?
And in the Worker logs, we see this:
pgsql
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Cannot perform I/O on behalf of a different request. I/O objects (such as streams, request/response bodies, and others) created in the context of one request handler cannot be accessed from a different request's handler. This is a limitation of Cloudflare Workers which allows us to improve overall performance. (I/O type: Native)
This happens randomly:
Sometimes the request works perfectly.
Other times, with the same payload, it fails immediately.
Even with a simple GET request, it works once, then fails right after if repeated, and then works again, and so on.
We try to mitigate it by adding delays before executing certain requests, and sometimes that works, but it is not a reliable solution.
The issue mostly happens when the Worker needs to perform several quick operations against our Neon PostgreSQL database, or when there are multiple requests in parallel right after the page loads.
We want to understand what causes this error and how to solve it in a stable way, without depending on artificial delays.
Does anyone know if there is any recommended pattern or configuration to avoid this behavior in Cloudflare Workers?
we are experiencing recurring errors with our Cloudflare Workers and we can’t pinpoint the exact cause.
In the browser, this message appears:
pgsql
Copiar
Editar
Please enable cookies.
Error 1101 Ray ID: [varies each time]
Worker threw exception
What happened?
And in the Worker logs, we see this:
pgsql
Copiar
Editar
Cannot perform I/O on behalf of a different request. I/O objects (such as streams, request/response bodies, and others) created in the context of one request handler cannot be accessed from a different request's handler. This is a limitation of Cloudflare Workers which allows us to improve overall performance. (I/O type: Native)
This happens randomly:
Sometimes the request works perfectly.
Other times, with the same payload, it fails immediately.
Even with a simple GET request, it works once, then fails right after if repeated, and then works again, and so on.
We try to mitigate it by adding delays before executing certain requests, and sometimes that works, but it is not a reliable solution.
The issue mostly happens when the Worker needs to perform several quick operations against our Neon PostgreSQL database, or when there are multiple requests in parallel right after the page loads.
We want to understand what causes this error and how to solve it in a stable way, without depending on artificial delays.
Does anyone know if there is any recommended pattern or configuration to avoid this behavior in Cloudflare Workers?
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