Find missing dead letter queues, unacked messages, schema drift risks, ordering violations, producer/consumer anti-patterns, and observability gaps — before messages silently disappear.
Event-driven architectures are powerful — until a consumer crashes without acking, a message lands in limbo, and your system silently drops orders. No errors. No alerts. Just missing data. EventLint scans your entire codebase for messaging anti-patterns and reliability gaps so your events always arrive.
90 checks across 6 categories, covering every aspect of event-driven architecture reliability and best practices.
Detects fire-and-forget publishes, missing message IDs, no retry on publish failure, unbounded batch sizes, missing publish confirmations, and producers without error callbacks.
Finds missing acknowledgments, absent consumer groups, unbounded prefetch counts, blocking consumers without timeouts, auto-ack without processing, and unhandled redeliveries.
Catches missing schema validation, breaking schema changes, absent version fields, untyped payloads, schema registry misconfigs, and event contracts without backward compatibility.
Detects missing DLQ configuration, no poison message handling, silent message drops, missing error events, unbounded retry loops, and consumers that swallow exceptions without alerting.
Catches missing idempotency keys, no deduplication logic, ordering assumptions without partition keys, at-most-once when at-least-once is needed, and missing sequence numbers.
Finds missing correlation IDs, absent event timestamps, no consumer lag monitoring, untraced async flows, missing metrics on publish/consume rates, and events without structured logging.
Purpose-built for event-driven architecture reliability. Nothing else comes close.
| Feature | EventLint | Kafka UI | Manual Review | SonarQube | AWS CloudWatch |
|---|---|---|---|---|---|
| Static code analysis | ✓ | ✗ | ✓ | ✓ | ✗ |
| Producer anti-patterns | ✓ 15 checks | ✗ | Ad hoc | ✗ | ✗ |
| Consumer anti-patterns | ✓ 15 checks | Partial | Ad hoc | ✗ | ✗ |
| Schema drift detection | ✓ | ✗ | Ad hoc | ✗ | ✗ |
| DLQ configuration checks | ✓ | Partial | Ad hoc | ✗ | Partial |
| Idempotency detection | ✓ | ✗ | Ad hoc | ✗ | ✗ |
| Observability gaps | ✓ | Partial | ✗ | ✗ | ✓ |
| Runs 100% locally | ✓ | ✗ | ✓ | Server | Cloud |
| Zero dependencies | ✓ | ✗ | ✓ | ✗ | ✗ |
| Broker agnostic | ✓ | Kafka only | ✓ | ✓ | AWS only |
| Setup time | 30 seconds | 10+ minutes | Hours | 30+ minutes | 15+ minutes |
| Price | Free tier | Free / Paid | Engineer time | $150+/mo | Pay-per-use |
Start scanning for free. Upgrade when your event architecture demands it.
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Install EventLint in 30 seconds. Find every missing DLQ, unacked message, and observability gap before your events silently vanish.