AWS use1-az4 cooling-plant incident (7 May 2026): simultaneous chiller failures in one data hall; Coinbase core-service disruption
7 May 2026; roughly 8 hours of core-service disruption at Coinbaseobserved
| Value kind | observed — Reported measurements, counts, and specifications keep the precision and scope stated by their source; an exact specification is not treated as a range. |
|---|---|
| Scope | Coinbase's account of simultaneous chiller failures in one AWS data hall and the ensuing application outage. Service duration is Coinbase's, not the duration of chiller failure. |
| As of | 2026-05-08 |
| Source | Coinbase engineering blog, 'A postmortem of our May 7, 2026 outage' (1 June 2026) |
| Review | checking…review by 2027-06-01 · slow cadence |
| Recorded changes | last 2026-10-25 |
| Claim id | p5-aws-use1-az4-cooling-incident-2026 |
Where the guide uses it
Not quoted in a chapter yet; it is kept in the curated register.
← Full numbers register — every date-stamped figure in the guide, with revision history.