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How I built a custom code execution engine backed by a Rust/Axum microservice, embedded directly in blog articles. Covers the security model, subprocess isolation with setrlimit, HMAC request signing, and the tradeoffs behind every decision.

In Java, mutating a Map inside computeIfAbsent compiles fine and blows up at runtime. In Rust, the same pattern does not compile at all. This is what safe by design actually means.

Today I redeployed my blog and 4 out of 6 project images were broken. Here is the story of how I tracked down the issue.

Learn what composite indexes are, how column order affects query performance, and when to use them to speed up your database queries.

Quick guide to implementing active page indicators in your Next.js navigation using the usePathname hook. Better UX in 5 minutes.