How to design distributed backend systems that gracefully survive network partitions, database deadlocks, and third-party API downtime.

When building enterprise systems handling thousands of concurrent transactions per second, partial network failures are not edge cases — they are an inevitable certainty.

Circuit Breakers and Idempotency

Every remote call must be wrapped in self-healing circuit breakers. We utilize Go with Redis backoffs to prevent cascading service degradation.

Furthermore, event consumers must enforce strict idempotency keys so duplicate delivery during network reconnects does not corrupt state.