Notatki z budowania oprogramowania.

One setting cut my Claude Code cost per request by 39%. My first three mods: under 1%.

Volod, założyciel

I replayed a month of my Claude Code logs. Most of the cost is the model re-reading context, so one setting that compacts earlier cut the cost of a request by 39%. The first three mods I wrote: under 1%.

I priced thirteen hosting providers for the same small app. The spread was 14x.

Volod, założyciel

One real app - 5,000 users, 1.6M requests, 108 GB of egress - priced on Hetzner, Railway, Render, Fly, Vercel, Cloudflare, Supabase, Firebase, DigitalOcean, Heroku, Sevalla, AWS and GCP with August 2026 list prices. Then priced again at ten times the traffic, because the slope matters more than the starting point.

How to bankrupt your client or why you should avoid using "on push" events on Github Actions

Volod, założyciel

Long story short, I almost bankrupted our client...