A reader has dead letters
Weik.io 2026.2A reader has events it couldn't handle after its last retry, and weikio deadletters list shows each with the reason it failed. Video
Watch: Dead letters, 3:21
A failed event lands in the dead letters, and weikio deadletters resend sends it to its reader again.
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| Kind | Severity | Who sees it |
|---|---|---|
reader- |
Warning | Everyone who can read the deployment |
What it means#
A reader has events it couldn’t handle after its last retry, kept as dead letters with the reason each failed.
What raises it#
The reader has at least one dead letter.
What to check#
List the reader’s dead letters:
$ weikio deadletters list --env <environment> --integration <project>/<integration>Print one with its event and the reason it failed:
$ weikio deadletters show --env <environment> --seq <seq>How to fix it#
Fix the cause, such as a route bug or a system that refused the event, then send the dead letters again to the integration they failed in:
$ weikio deadletters resend --env <environment> --integration <project>/<integration> --allDiscard the ones that shouldn’t be handled, and the problem clears when the reader has no dead letters.