CAdES and XAdES aren't interchangeable even though both are "advanced signatures." The choice depends on document type, trust profile, and what the CA actually expects to validate. A technical guide with DSS and Java to make the right call before you sign anything.
Aug 12 2026 · 9′ · Tutorials · seguridad · certificados
Virtual Threads solves the cost of spinning up thousands of threads in the JVM. It doesn't solve the blocking problem when your code has synchronized blocks or blocking native calls. JEP 444 says so, but almost nobody reads it to the end.
Aug 11 2026 · 8′ · Tutorials · concurrencia · spring-boot
fp-ts is a university, not a production framework for most teams. But ignoring it completely means leaving genuinely valuable concepts on the table. An honest walkthrough of Option, Either, and pipe from the perspective of strict TypeScript in the real world — plus the uncomfortable question of whether you actually need it.
Aug 07 2026 · 10′ · Tutorials · Next.js · TypeScript
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
Qwen3 landed with thinking mode and real improvements in code generation. But before you replace the model already running in your Ollama setup, there are technical questions you need to answer first. I answer them here without selling hype.
Aug 02 2026 · 9′ · Tutorials · TypeScript · Inferencia Local
Compiler says OK. Runtime explodes anyway. Here are the 4 patterns where strict null checks isn't enough: assertion functions, untyped libraries, Prisma ORM, and JSON.parse — with real code from a Next.js/Prisma stack.
Jul 23 2026 · 8′ · Tutorials · Next.js · TypeScript
DeepSeek's API is compatible with the OpenAI SDK — that makes the integration almost trivial. The real problem isn't the plumbing. It's deciding whether the model is actually worth it for your use case, without buying the hype or dismissing it out of fashion. Here's the framework.
Jul 22 2026 · 8′ · Tutorials · TypeScript · nextjs
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
Swiper has been the undisputed standard for touch carousels on the web for years. Zero dependencies, official wrappers for React, Vue and Angular, and transitions that feel genuinely native.
Jul 11 2026 · 5′ · Experiments · React · open source
Architecture, real systems, product decisions and technical lessons. Everything reviewed with my own judgment before it ships.
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