Incident with Webhooks

This incident has been resolved.

We are preparing a new mitigation for the issue affecting the webhook deliveries API (https://docs.github.com/en/rest/repos/webhooks?apiVersion=2022-11-28#list-deliveries-for-a-repository-webhook) and its organization and integration variants. Overall impact remains low, with under 1% of requests failing for a subset of customers.

The previous mitigation did not resolve the issue. We are investigating further. The affected endpoint is the webhook deliveries API (https://docs.github.com/en/rest/repos/webhooks?apiVersion=2022-11-28#list-deliveries-for-a-repository-webhook) and its organization and integration variants. Overall impact remains low, with under 1% of requests failing for a subset of customers.

We have deployed a fix for the issue causing some users to experience intermittent failures when accessing the Webhooks API and configuration pages. We are monitoring to confirm full recovery.

We continue working on mitigations to restore service.

We continue working on mitigations to restore service.

We continue working on mitigations to restore service.

We continue working on mitigations to restore full service.

Our engineers have identified the root cause and are actively implementing mitigations to restore full service.

This problem is impacting less than 1% of UI and webhook API calls.

We are investigating an issue affecting a subset of customers experiencing errors when viewing webhook delivery histories and retrying webhook deliveries. UI and webhook API is impacted. Engineers have identified the cause and are actively working on mitigation.

We are investigating reports of degraded performance for Webhooks