Tag: JetStream
NATS JetStream persistence & streaming subsystem issues.
| ID | Title | Description | Category | Technology | Tags |
|---|---|---|---|---|---|
| CRE-2025-0082 High Impact: 0/10 Mitigation: 8/10 | NATS JetStream HA failures: monitor goroutine, consumer stalls and unsynced replicas | Detects high-availability failures in NATS JetStream clusters due to: 1. **Monitor goroutine failure** — after node restarts, Raft group fails to elect a leader 2. **Consumer deadlock** — using DeliverPolicy=LastPerSubject + AckPolicy=Explicit with low MaxAckPending 3. **Unsynced replicas** — object store replication appears healthy but data is lost or inconsistent between nodes These issues lead to invisible data loss, stalled consumers, or stream unavailability. | Message Queue Problems | nats | NATSJetStreamRaftAck DeadlockUnsynced Replica |
| CRE-2025-0088 High Impact: 9/10 Mitigation: 8/10 | NATS JetStream Storage Exhaustion Detection | Detects NATS JetStream storage exhaustion conditions when streams reach configured storage limits (maximum bytes, maximum messages) causing message storage failures. These patterns indicate insufficient stream storage capacity relative to message production rate, leading to message rejection and potential data loss. | Message Queue Problems | jetstream | NATSJetStreamStorage ExhaustionMessage Storage FailureCapacity ExceededData Loss Risk |