things we learned · worth sharing
oem/log
Short writeups of things we've learned while shipping real systems: the reusable trick, the gotcha that cost us time, and how to use it in a bigger build. No full blueprints, no sensitive details, just the useful middle of the story.
statusstatic · fast · zero runtime attack surface
Index / latest
- 03A hundred Tor exits, kept alive and honestWe route our agent traffic through a pool of a hundred Tor daemons so requests land on a spread of unique exit IPs. Keeping a hundred of them actually usable was the hard part. Six problems, what caused each one, and what we changed.
- 02Getting tracking data from FedEx consistently, but the hard wayWe wanted tracking numbers to just work from our agents, and they do now. Getting there meant learning why FedEx sits behind Akamai, why its cookie stops working the moment the network exit changes, and why copying the browser was never enough.
- 01Building a watchdog that finally stopped lying to usThe real story of our self-healing watchdog: what we wired wrong, the incidents that exposed it, and how a long run of fixes took it from chaos to quietly stable.