Engineering resilient event-driven architectures with RabbitMQ, Kafka, outbox patterns, and distributed caching.
Eliminating dual-write anomalies between relational databases and message brokers with guaranteed at-least-once delivery.
Mitigating thundering herds, probabilistic early expiration (XFetch), and multi-tier cache synchronization.
Implementing robust idempotency with Redis distributed locks, PostgreSQL unique constraints, and replay headers.
Preventing cascading failures across distributed microservices using adaptive circuit breaker state machines.
Smart broker vs dumb broker: message replay, partition ordering, routing keys, and operational complexity.