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Tag: READONLY

Errors when writing to a read-only Redis replica.

IDTitleDescriptionCategoryTechnologyTags
CRE-2025-0072
Critical
Impact: 10/10
Mitigation: 7/10
Redis Out-Of-Memory → Persistence Crash → Replica/ACL Write Failures
Detects a cascade of critical Redis failure modes in a single session:
  • Redis refuses writes when maxmemory is exceeded (OOM).
  • RDB snapshot (BGSAVE) fails (MISCONF) due to simulated full-disk.
  • Replica refuses writes (READONLY).
  • ACL denies a write (NOPERM).
In-Memory Database ProblemsredisRedisOut of MemoryPersistenceRDBMISCONFREADONLYACLSecurity
CRE-2025-0081
Critical
Impact: 9/10
Mitigation: 8/10
Temporal Server Fails Persistence on Read-Only Database
Detects critical failures where Temporal Server is unable to perform essential database writeoperations (e.g., starting workflows, recording history, completing tasks) because its underlying SQL database (e.g., PostgreSQL) is in a read-only state. This leads to ahalt or severe degradation in workflow processing and can cause cluster instability.
Temporal Server FailuretemporalTemporalPostgreSQLREADONLY