Essays and notes on AI, software engineering, developer tools, systems, and the shape of modern product building.
Antonio B De Castro

An opinionated guide to the technologies that survived the hype and proved their worth
Antonio B De Castro

Looking back at 2022-2025 to separate signal from noise in developer tooling
Antonio B De Castro

Node compatibility, npm support, and a mature stdlib—Deno stopped fighting the ecosystem and started winning
Antonio B De Castro

The iPhone launched in 2007. AI agents launched in 2025. The parallels are uncanny.
Antonio B De Castro

ZKPs moved past blockchain—privacy-preserving authentication and verification are next
Antonio B De Castro

The ‘just use HTML’ movement graduated from rebellion to legitimate architectural choice
Antonio B De Castro

A data-driven look at the operational overhead most teams underestimate by 5-10x
Antonio B De Castro

CRDTs, sync engines, and the end of the loading spinner
Antonio B De Castro

Standards-based, runtime-agnostic, and absurdly fast—Hono is the web framework that runs everywhere
Antonio B De Castro

Incremental backup, enhanced JSON support, and identity columns done right