https://www.buildwithchai.dev/blog Writing on Golang, distributed systems, and payment infrastructure by Chaitanya Akula. en-us Sat, 12 Sep 2026 00:06:26 GMT https://www.buildwithchai.dev/blog/designing-a-payment-transfer-system-for-high-throughput https://www.buildwithchai.dev/blog/designing-a-payment-transfer-system-for-high-throughput What it actually takes to move money across 130+ banks reliably: idempotency, reconciliation, per-integration failure domains, and keeping tail latency predictable when downstream banks misbehave. Tue, 08 Sep 2026 20:54:28 GMT GolangDistributed SystemsPayment Systems https://www.buildwithchai.dev/blog/taming-tail-latency-in-go-services https://www.buildwithchai.dev/blog/taming-tail-latency-in-go-services p99 is where your users actually live. A practical tour of the Go-specific causes of latency spikes — GC pauses, goroutine scheduling, connection pool starvation — and how to measure and fix them. Sun, 30 Aug 2026 20:55:10 GMT GolangPerformanceObservability https://www.buildwithchai.dev/blog/idempotency-keys-are-not-optional https://www.buildwithchai.dev/blog/idempotency-keys-are-not-optional If a client can retry a request — and it always can — your write endpoints need idempotency keys. Here is how to design them so retries are safe without turning your database into a bottleneck. Sat, 22 Aug 2026 20:55:03 GMT Distributed SystemsAPI DesignReliability