BBBinayak Bhattacharjeeinbytelife.hashnode.dev·Jun 19 · 10 min readWhy Idempotency Is Critical in Payment SystemsA customer taps "Pay Now" once. Their bank statement shows two charges. No one wrote a bug that says "charge twice" the code looks correct, the tests pass, and yet the money moved twice. This is one o00
BBBinayak Bhattacharjeeinbytelife.hashnode.dev·May 27 · 14 min readHow Rate Limiting Works Internally...1. The Hook: Why Rate Limiting Is a Survival Mechanism Most engineers first encounter rate limiting as a consumer — your API call comes back with a 429 Too Many Requests and you feel mildly inconvenie00
