Idempotency Keys in Distributed APIs
How we eliminated duplicate charges and side effects using idempotency keys — design, implementation, and the edge cases that almost broke production.
Technical notes organized by domain - architecture decisions, debugging stories, experiments, and lessons from production.
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Circuit Breakers for Downstream Dependencies
Polly integration, failure thresholds, and the half-open state that prevented a cascade outage.
Zero-Downtime Deployments on Kubernetes
Rolling updates aren't enough when you have long-lived connections. Notes from implementing blue-green deployments with connection draining.