I Built a SaaS in 3 Days That Solves a $500 Problem for Free

June 22, 2026 · Dev.to

The 5 Cost Traps That Will Quietly Bleed Your AI API Gateway Dry (And How to Fix Them)
In my last post, we talked about key cache invalidation — the silent production killer that turns your gateway into a 50
HackTheBox: Postman Writeup
Summary Postman is an easy-rated Linux machine on HackTheBox. The box exposes an unauthenticated Redis instance that all
Dockerfile Builder: a small tool that solves a specific problem
Dockerfiles that pass a casual build check can still fail silently in production when they lack proper layer caching, ru
400 ad accounts 3 subrequests = silent data loss in Cloudflare Workers (and how I fixed it)
Adding a single KV cache write broke my Worker — and it didn't throw a single error to the caller. I run a Korean D2C ad
Enum Type Safety in C
The C standard allows the programmer to define new types, including enumerated types—or "enums"—that improve program rea