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Cron based Function errors with error code: 524

Mar 3, 2025, 16:00

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MarcelOriginal post

Rank 1: Thread

Mar 3, 2025, 15:17

The function timeout is set to 900 seconds, but the function gives a 524 error after 1 minute (according to the dashboard UI). It is a cron scheduled function. I can't see the logs because it errors, so I don't even know how far it gets.

Summary

Developers facing error code 524 in a cron function despite setting a 900-second timeout. Issue likely due to slow queries, crashing with no error logs past 50 iterations. Increasing limit, adding a select query, and reducing payload suggested solutions. Manually testing function execution recommended to identify problems.

Kenny

Mar 3, 2025, 15:22

AFAIK 524 is a timeout error. What does the function do? If you call it directly does it work?

Marcel

Rank 1: Thread

Mar 3, 2025, 15:23

The counts the number of users in the db with the users endpoint. It has to do some cursor pagination because there are more than 5k

Marcel

Rank 1: Thread

Mar 3, 2025, 15:24

it gets triggered internally by the schedule cron

Kenny

Mar 3, 2025, 15:24

Sure, but can you execute it manually, and does it fail then too?

Marcel

Rank 1: Thread

Mar 3, 2025, 15:24

you mean manually using the appwrite dashboard UI?

Kenny

Mar 3, 2025, 15:24

Yes

Marcel

Rank 1: Thread

Mar 3, 2025, 15:25

it's now running

Marcel

Rank 1: Thread

Mar 3, 2025, 15:26

failed again:

Kenny

Mar 3, 2025, 15:27

Could you up the timeout period?

Marcel

Rank 1: Thread

Mar 3, 2025, 15:27

it is set to 900

Kenny

Mar 3, 2025, 15:30

Could you provide the function code?

Marcel

Rank 1: Thread

Mar 3, 2025, 15:33

i'm setting a counter to see if it exactly crashes after 60 sec.. i just ran it with less max pages and it run in 34 seconds normally.

Kenny

Mar 3, 2025, 15:37

So if you lower the amount you're fetching it works?

Kenny

Mar 3, 2025, 15:37

Maybe try increasing the limit so it has fewer http requests, and add a select query and select only the $id, so it reduces the payload.

Marcel

Rank 1: Thread

Mar 3, 2025, 15:42

Plain text

    log(`fetching page ${counter++}`)
    const query = lastId ? [Query.limit(limit), Query.cursorAfter(lastId)] : [Query.limit(limit)]
    const page = await users.list(query)
    allUsers = allUsers.concat(page.users)
    lastId = page.users.length > 0 ? page.users[page.users.length - 1].$id : undefined
  } while (lastId && counter < 50)```

it actually runs past 1 minute if I increase the counter enough, so it doesn't seem like a timeout issue. But when I remove the counter it crashes with this vague error code: 524 and then it doesn't display any logs so it's a bit hard to debug the issue. Maybe it's something with the lastId check.

Marcel

Rank 1: Thread

Mar 3, 2025, 15:42

ow with 50 it actually crashes

Kenny

Mar 3, 2025, 15:43

It seems like it's an issue with slow queries, but I agree it is hard to know exactly what the issue is

Marcel

Rank 1: Thread

Mar 3, 2025, 15:43

anyway to see the actual output / error logs?

Marcel

Rank 1: Thread

Mar 3, 2025, 15:43

stacktraces?

Kenny

Mar 3, 2025, 15:45

Are you on cloud?

Marcel

Rank 1: Thread

Mar 3, 2025, 15:46

Yep

Marcel

Rank 1: Thread

Mar 3, 2025, 15:47

PS. the Query.select you suggested to select only the $id doesn't seem to work on the users.list method
AppwriteException: Invalid queries` param: Invalid query method: select

Cron based Function errors with error code: 524

Need support?_