Event-Driven Microservices in Go: NATS JetStream & CQRS
High-Throughput Event-Driven Microservices in Go with NATS JetStream & CQRS Answer-First: Building high-throughput event-driven microservices with Go, NATS JetStream, and CQRS decouples write commands from read queries. Utilizing NATS JetStream pull consumers, server-side deduplication, and atomic Redis read guards processes 100,000+ transactions per second with sub-0.8ms P99 latencies and zero database write contention. Section 1: Architectural Rationale: Why Go + NATS JetStream for Event-Driven Microservices Scaling distributed systems beyond tens of thousands of transactions per second requires overcoming database write contention and cascading latency spikes inherent in synchronous request-response paradigms. Adopting Command Query Responsibility Segregation paired with event-driven architectures isolates write commands from analytical queries, enabling high-throughput microservices to process state mutations with sub-millisecond latencies. ...