Incident Library

Symptom

Inconsistent reads from a data store

데이터 저장소 읽기 불일치 · inconsistent-reads

2 cases · 2019 to 2026

Root cause Configuration change2
Component Database1Service discovery1
Contributing factor Unverified assumption1Excessive blast radius1Circular dependency1Monitoring blind spot1Unrepresentative staging1
Organisation Monzo1PubNub1

Cases

  1. IL-0560 Some PubNub messages in the US East point of presence were misrouted with no error and not delivered right awayPubNub · 2026

    Root cause Configuration change

  2. IL-0272 New Cassandra nodes served reads for data they did not hold, so Monzo records looked missing and payments failedMonzo · 2019

    Root cause Configuration change

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