- Published on
How correlation IDs in microservices connect logs, traces, queues, and background jobs across service boundaries without pretending to replace real tracing or metrics.
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- Published on
A practical OpenTelemetry guide for backend engineers: what to instrument first, how traces, metrics, logs, context propagation, attributes, sampling, and collectors make production debugging clearer.- Published on
How to handle webhook idempotency and retries in production with durable receipt records, atomic deduplication, fast acknowledgements, idempotent workers, and replay-safe side effects.- Published on
How to prevent race conditions in backend systems by naming the invariant, moving correctness to durable boundaries, and testing overlapping requests, retries, and jobs.- Published on
How to choose between optimistic locking, guarded updates, and SELECT FOR UPDATE in SQL when concurrent requests can overwrite data, oversell inventory, or serialize hot rows.