1575 articles
Your message queue delivers an event twice. Your consumer processes it twice. The order ships twice, the email sends twice, the payment charges twice. At-least-once delivery is a guarantee — not a bug. Here''s how to build idempotent consumers that handle duplicate events safely.
What makes execution durable, Temporal workflows vs activities, automatic retry, long-running workflows, saga pattern, signals and queries, and comparison to BullMQ and Inngest.
Observe traffic and performance at the kernel level with eBPF. No code changes needed. Learn Cilium, Parca, and continuous profiling.
What eBPF actually is, Cilium for network observability, Parca for continuous profiling, BCC tools, eBPF vs traditional APM, and production safety considerations.
Deploy code to edge locations near users for sub-100ms latency. Learn constraints, state management, and when edge adds complexity.