Sentry: Notification Delivery Delays
GitHub outage, Jun 29, 2020 · 6 vendors, 6 incidents
Sentry’s incident started in the same window without naming GitHub (timing only, not evidence of a link). (timing only, posted +45 min vs GitHub’s own post)
Swipe sideways to see the whole diagram.
Mermaid source
flowchart LR
root["GitHub<br/>posted 09:14 UTC"]:::root
h1["Within an hour<br/>2 vendors, 2 blamed GitHub<br/>CircleCI, Snyk"]:::blames
root --> h1
me["Sentry (this incident)<br/>posted +45 min"]:::me
root -.->|"same window"| meFull event: timeline, evidence and all vendors →
Detected automatically from incidents that started together and named the same provider. A link means one vendor’s incident named another, not a confirmed cause.
Timeline of updates
- resolved
The issue was resolved and notifications are delivered as expected.
From Sentry’s published incident history: for incidents before Rewindex began polling this status page, only the final update text is available.
Archive proof
Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert.
How the archive is checked, and what it cannot prove.
This incident predates live tracking (October 17, 2026). It came from the vendor’s own published history, which is not covered by checkpoints.
Impact, status and times are the vendor’s own, as last archived. View on status.sentry.io (opens in new tab).