[RESOLVED] On Nov 12th 2024 beginning at 21:20 UTC, WordPress.org experienced intermittent elevated latency and increased error rates. These affected both the WordPress.org website and API. This initial incident was quickly resolved by the team, but reoccurred briefly on Nov 13 at 0110 UTC, 0900 UTC, and 1400 UTC. The underlying cause was network saturation of the hosting provider’s network that hosts some of the WordPress.org infrastructure. Although all of the servers and switch interfaces that our team has visibility into were within normal levels of utilization, there were some upstream network bottlenecks that created increased latency and packet loss that affected the WordPress.org environment. Timeline below:
Nov 12 2120 UTC – WordPress 6.7 released.
Nov 12 2220 UTC – Alerts received and adjustments made to reduce overall network utilization.
Nov 13 0110 UTC – Additional alerts received and more adjustments made to reduce overall network utilization even further.
Nov 13 0850 UTC – Attempt to increase the WordPress 6.7 rollout speed.
Nov 13 0900 UTC – Rollout percentage decreased due to additional increased latency and error rates.
Nov 13 1400 UTC – Another attempted to increase WordPress 6.7 rollout speed.
Nov 13 1410 UTC – Rollout percentage decreased due to additional increased latency and error rates.
Nov 13 1830 UTC – Workaround implemented for upstream provider network congestion.
Nov 13 2300 UTC – WordPress 6.7 rollout completed.
While we are still working with our provider to resolve the underlying issues within their network, the changes implemented during this incident should make future WordPress updates faster and more robust.
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