54 articles tagged #API
Stripe metered billing seems simple until your month-end revenue numbers don't add up. Here are the specific gotchas — from usage record timing to invoice finalization windows — that silently corrupt your MRR reports.
A fetch call with no timeout will wait forever if the server stalls or drops the connection silently. Learn exactly why this happens and how to implement abort-based timeouts, retry logic, and proper error handling in JavaScript.
Lambda cold starts can turn a 50ms function into a 3-second timeout behind API Gateway — and the root cause isn't always obvious. Here's how to diagnose what's actually happening and fix it systematically.
GraphQL's flexibility is a double-edged sword. Introspection leaks your entire schema to attackers, and query batching can turn a single request into a denial-of-service weapon. Here's how to shut both doors.
ChatGPT confidently writes GraphQL queries with fields that don't exist in your schema. Here's how to give it exactly what it needs to produce accurate, runnable queries every time.
Clerk and Auth0 both promise painless authentication, but their pricing models diverge sharply once you hit a few thousand users. Here's what actually happens to your bill — and your sanity — when you build with each.
ChatGPT can draft OpenAPI specs fast, but without the right context it invents fields, misses required headers, and drifts further from your actual code with every revision. Here's how to keep it honest.
CL-TE desync attacks slip malicious payloads through your reverse proxy by exploiting disagreements between Content-Length and Transfer-Encoding headers. Here's how they work and how to stop them cold.
A misconfigured redirect URI in your OAuth 2.0 flow can hand an attacker a valid authorization code and complete control of any user account. Here's exactly how these attacks work and how to shut them down.
You updated your pricing page, hit publish, and now churn is spiking. Before you roll everything back in a panic, here's how to diagnose what actually broke, segment the affected cohort, and fix it without torching your revenue model.
A misconfigured CORS policy can let any website silently read your API responses on behalf of your users. Learn the exact patterns that create this exposure and how to fix each one before they become a breach.
Picking the wrong transactional email provider costs you more than money — it costs you inbox placement. We ran both Resend and Postmark through real deliverability checks, pricing stress-tests, and API ergonomics to find out which one earns its keep.