Why a HEALTHCHECK copied from a tutorial usually lies more than having none at all, and how to decide between Dockerfile, Compose, and the orchestrator based on what you actually need to monitor.
Aug 04 2026 · 9′ · Tutorials · docker · devops
There's no universal winner. Barman wins on simplicity and real-time WAL streaming with low operational overhead. pgBackRest wins on volume and restore speed. The criteria matter more than the tool.
Jul 13 2026 · 9′ · Tutorials · devops · produccion
Prisma 6 improves ergonomics and performance, but there are three behavior changes that won't scream at you in the compiler — and will absolutely show up at runtime if you don't audit your relational queries first. Practical guide with checklist.
Jun 03 2026 · 8′ · Tutorials · TypeScript · backend
Same backend, same database, same k6. In the first runs it looked like Embedded GlassFish was on top. When I fixed JDK, warmup, window, heap, and DB attribution, the story changed: Spring Boot ended up with the best local profile for this workload. Payara Micro was the cleanest Jakarta EE by check failures. GlassFish surprised by being viable.
May 28 2026 · 10′ · Experiments · Performance · backend
Prisma query logs help you catch patterns, but if the problem lives inside PostgreSQL, the ORM won't show it to you. Here I break down when Prisma logging is enough and when you need to instrument the database directly.
May 25 2026 · 7′ · Tutorials · TypeScript · backend
Prisma in Next.js 16 Server Actions has an N+1 vector that doesn't exist in classic API routes. The culprit isn't the ORM — it's how Actions compose. Here are the patterns that prevent it.
May 18 2026 · 7′ · Experiments · TypeScript · Performance
I built a reproducible lab to compare Prisma 5 against Spring Boot JdbcTemplate on the same PostgreSQL 16. What I found wasn't a winner: it was that query shape and N+1 explain almost everything, and blaming the ORM is too easy.
May 16 2026 · 5′ · Experiments · TypeScript · Performance
A low p95 with a 97% error rate isn't a fast pool — it's a pool that fails fast. I built a reproducible experiment with Spring Boot 3, PostgreSQL, and k6 to understand which signals actually matter — and which ones deceive you.
May 15 2026 · 13′ · Experiments · Performance · backend
Spring Boot works very well in production, but its defaults do not always fit PaaS constraints, tight memory, and real observability. These are the points worth reviewing before trusting the initial setup.
May 09 2026 · 10′ · Experiments · Performance · backend
Architecture, real systems, product decisions and technical lessons. Everything reviewed with my own judgment before it ships.
230 articles published