ZZyVOPinblog.zyvop.com·6h ago · 11 min readArchitecture Case Study: Migrating a Developer SaaS from Serverless to a $10 VPS with DockerServerless platforms like Vercel and AWS Lambda are the default choice for modern web applications. For the first few months of building our developer platform, the serverless promise held up: push to12M
ZZyVOPinblog.zyvop.com·6h ago · 15 min readStop Logging Out Innocent Users: Building Production Refresh Token Rotation with Token Family Revocation in RedisEvery engineering team that implements JWT authentication eventually runs into the dilemma of session lifetime. If you issue long-lived access tokens (e.g., 30 days), you lose the ability to quickly r00
ZZyVOPinblog.zyvop.com·7h ago · 6 min readAI Wrote the Code. Now Nobody Understands It.I keep hearing the same worry about AI-written code: it's sloppy, it's bloated, it'll rot the codebase. Sometimes that's true. But when I look at where teams actually get stuck, it's rarely the code i00
ZZyVOPinblog.zyvop.com·1d ago · 7 min readThe Rise of AI Trading Among Retail InvestorsOn May 27, 2026, Robinhood let customers connect Claude, ChatGPT, and other AI agents straight to their trading accounts. The agents can watch markets, rebalance a portfolio, and place real trades, wr00
ZZyVOPinblog.zyvop.com·1d ago · 29 min readJev Ultrafast, Explained: How a Browser Agent Gets a Flight Search Down to 7 SecondsA deep dive into browser-use/jev-ultrafast: how it's built, what was measured, and what the benchmark does and doesn't prove. Numbers checked September 29, 2026. TL;DR What it is: a small, MIT-licen00
