Unsafe failure behaviour

Cases

1. IL-0432 AutoReserve notifications silently went unsent as Memorystore for Redis 3.2 rejected writes with OOM below its limitHello Inc. · 2026

   Root cause Capacity exhaustion

2. IL-0356 Every domain hosted on Railway returned HTTP 404 to new connections for five minutes because route lookups failedRailway · 2026

   Root cause Faulty deployment

3. IL-0380 A compaction change in InfluxDB Cloud us-east-1 dropped data from compacted files, and queries missed data for weeksInfluxData · 2026

   Root cause Faulty deployment

4. IL-0367 Azure Storage in Central US rejected VM disk I/O, taking down VMs and the SQL Database and Cosmos DB services on themMicrosoft Azure · 2024

   Root cause Configuration change

5. IL-0340 Cloudflare's 1.1.1.1 resolver returned SERVFAIL to some valid DNS queries for four hoursCloudflare · 2023

   Root cause Software defect

6. IL-0506 UC Berkeley DataHub logins failed and students got empty home directories after the JupyterHub database was overwrittenUC Berkeley · 2017

   Root cause Operator error

7. IL-0215 Twilio's billing Redis master lost all balances and went read-only, and auto-recharge charged customer cards repeatedlyTwilio · 2013

   Root cause Configuration change