HTTP/2 301 server: nginx/1.22.1 date: Wed, 28 Jan 2026 03:04:18 GMT content-type: text/html content-length: 169 location: https://www.cavallium.it/ accept-ch: Sec-CH-UA, Sec-CH-UA-Mobile, Sec-CH-UA-Platform, Sec-CH-UA-Arch, Sec-CH-UA-Model HTTP/2 200 server: nginx/1.22.1 date: Wed, 28 Jan 2026 03:04:18 GMT content-type: text/xml last-modified: Wed, 10 Dec 2025 01:29:28 GMT vary: Accept-Encoding etag: W/"6938ccf8-c4f" accept-ch: Sec-CH-UA, Sec-CH-UA-Mobile, Sec-CH-UA-Platform, Sec-CH-UA-Arch, Sec-CH-UA-Model content-encoding: gzip Engineering by subtraction This website is a raw XML file transformed by XSLT. No JavaScript, no bundlers. A demonstration of engineering by subtraction. true You are viewing a raw XML file. Your browser transforms it into HTML using a pure function written in XSLT. There is no JavaScript, no server-side rendering, no bundler, and no tracking. The source code is the content itself. I build systems the same way. I treat complexity as a cost, not an asset. I prefer data over code, invariants over frameworks, and deterministic behavior over "smart" framework abstractions. Systems built on these principles handle large datasets and high-frequency updates efficiently on commodity hardware. Data‑first Zero‑overhead Deterministic Declarative. Define outcomes, not execution steps. Data-driven. Architecture shaped by data flow, not frameworks. Reactive. Asynchronous, non-blocking I/O with perfectly managed backpressure. Minimalist. No complex orchestrators when not needed, no unnecessary wrappers. Functional. Stateless logic and immutable data structures. Some random public projects I've worked on. Data Generator: Zero-overhead schema evolution. FileSponge: Resilient immutable file proxy. TgDB Search: Large‑scale indexing of public groups, channels and bots. TDLight Java: High‑performance Telegram client. TDLight: Cross‑platform Telegram client and database. CavalliumDBEngine: Reactive storage and search engine. WarpPI Calculator, an experimental calculator. Midi23D, a tool to convert .midi files into playable GCODE for 3D printers.