{"id":"cloudsql-ha-replicas-complementary-not-alternative","text":"Cloud SQL HA and read replicas are complementary, not interchangeable: HA doubles cost with an idle standby for automatic failover, while replicas are strictly read-only without failover capability or independent backups — achieving both availability and read scaling requires deploying both patterns, ideally with replicas in a third zone.","truth_value":"IN","source":"","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"cloudsql-ha-replicas-complementary-not-alternative","truth_value":"IN","reason":"premise"}]}}