How to cancel a mutation when network is down | Convex Community | Page 1

teal pike Jan 10, 2025, 9:04 AM

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Take the convex-tutorial (the chat app), run it, use your dev tools to make the app Offline, type a message in the app, and hit Enter.

Nothing will happen until the app comes back online. Would there be a way to cancel the mutation after 30 seconds, so we can display an error message to the user, instead of leaving them hanging for a indefinite time?

(Also, just letting you know: I notice a high CPU consumption during the whole time the app is offline.)

sick micaBOT Jan 10, 2025, 9:04 AM

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Thanks for posting in #1088161997662724167.
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turbid halo Jan 10, 2025, 4:32 PM

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you can avoid blocking the user with optimistic updates https://docs.convex.dev/client/react/optimistic-updates . but i agree canceling a mutation would be reasonable and i don't think there's a way to do it. Also the CPU is a good call out

Optimistic Updates | Convex Developer Hub

Even though Convex queries are completely reactive, sometimes you'll want to

#How to cancel a mutation when network is down