engineering
File uploads look like a solved problem and turn into the most consistent source of production incidents in any web service. The honest design space involves validation, streaming, storage isolation, and a long list of failure modes that the framework defaults paper over.
engineering
OAuth is treated as the default for any modern API. For developer tools where the integrator and the operator are the same person, the indirection layer pays back nothing and costs everything.
engineering
Most secrets-management advice is written for large enterprises and assumes a HashiCorp Vault cluster you do not have. The patterns that actually work for small SaaS are simpler — environment files with strict permissions, KMS-backed encryption for the few secrets that need it, rotation disciplin...
engineering
JWTs and session tokens get debated in tribal terms — stateless vs stateful, modern vs legacy. The honest comparison runs along five axes: revocation, payload size, trust boundaries, key rotation, and operational cost. Most teams should pick session tokens by default and reach for JWTs only whe
engineering
Every application starts with a single permission check and ends with a tangle of role flags, conditional ifs, and special cases that nobody fully understands. The path from one to the other is well-trodden. Here is what makes permission systems hold up.
engineering
An audit log is one of those features that looks easy from the outside and reveals its difficulty only when you need it. The first time someone asks 'who changed this and when?' you discover whether your audit log was designed for query or for ceremony. Here is what separates the two.
engineering
API keys are the front door to your service. Most implementations get the basics wrong — and the cost is paid the first time a key leaks.