Joca Pereyra — Backend Developer & Tech Blog
joca — backend dev. curiosity is the engine.
understands the why, skips the hype,
builds only what's needed.
best ideas come from outside the bubble.
when not coding for work, probably coding for fun.
age of empires 2 DE telegram bot.
tracks matches with friends so we
can argue about who's actually good.
stack: python · telegram
Latest Posts
Squeezing one more project into $5
Posted on:October 3, 2026 at 12:00 PMWhy I moved CotizaLupa's backend to Go before launch, mostly to make room on my $5 Railway plan.
My Japanese iced coffee recipe
Posted on:July 11, 2026 at 12:00 PMMy go-to Japanese iced coffee recipe for the Kalita Wave, brewed hot directly over ice.
My cat got sick, so I turned a WhatsApp mess into a dashboard
Posted on:March 25, 2026 at 12:00 PMRumi got sick, her records were scattered across chats, and I spent an hour turning the mess into a dashboard I could actually use.
How OpenClaw manages context in a never-ending conversation
Posted on:March 7, 2026 at 12:00 PMHow does OpenClaw keep a conversation going forever without blowing up the context window? I dug into the codebase to find out, and took some ideas for my own Telegram bot.
Advanced retrieval strategies
Posted on:April 12, 2024 at 10:22 AMA practical guide to retrieval strategies for LLMs — similarity search, contextual compression, query rewriting, reranking, and parent document retrieval.
My first blog
Posted on:January 12, 2023 at 03:22 PMA short story about this blog