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Having multiple watchQuery observables on the page causes an inifite number of rapid requests

See original GitHub issue

v3.1.x of apollo client introduced an odd issue in our software where having multiple watchQuery observables on the page causes it to make 10s of http requests per second an infinite number of times.

Intended outcome: To make a single http request per watchQuery observable.

Actual outcome: 10s of requests are made to the server per second infinitely.

How to reproduce the issue: I’ve created a minimal reporoduction of the issue, note I’ve mocked the http request but the original issue was happenning with a real backend. https://stackblitz.com/edit/apollo-watch-query-infinite

Versions System: OS: Windows 10 10.0.18363 Binaries: Node: 12.13.1 - C:\Program Files\nodejs\node.EXE Yarn: 1.22.0 - ~\AppData\Roaming\npm\yarn.CMD npm: 6.12.1 - C:\Program Files\nodejs\npm.CMD Browsers: Chrome: 81.0.4044.92 Edge: Spartan (44.18362.449.0)

Issue Analytics

State:
Created 3 years ago
Reactions:4
Comments:5 (2 by maintainers)

Top GitHub Comments

1reaction

JesseZomercommented, Sep 11, 2020

https://github.com/apollographql/apollo-client/issues/6760#issuecomment-668188727 Here is some more info on something they changed in 3.1. If you set nextFetchPolicy: 'cache-first' it will stop.

I really think they should have communicated this a bit better, seeing the impact this can have on some servers

1reaction

dvakatsiienkocommented, Sep 3, 2020

Yes, I can confirm this issue but in a little bit different condition: using pollInterval, in case if multiple queries (pollInterval applied) are used on the same page. I have 8 queries (pollInterval applied) on the same page which gives me an infinite querying loop very quickly.

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