Practical articles on connecting systems and automating work, with code that was tested before publication.
Compare webhooks and polling for API integrations: latency, reliability, cost, and failure modes — with tested code for idempotent handlers and cursor-based polling.
Learn when to retry failed API requests, how exponential backoff with jitter works, and how idempotency keys prevent duplicate payments or records. Tested Node.js code.
Step-by-step guide to verifying webhook signatures with HMAC-SHA256: raw request bodies, timestamp checks to stop replays, and constant-time comparison. Tested code.