Another six months behind us, and the Business4s ecosystem keeps growing — quietly, but steadily, as usual. Two releases of Workflows4s, a…

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Welcome to the Scala Mentorship Program! This initiative is free, open to engineers of all levels, and part of the

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TL;DR: Effect systems are great. Having five of them is not. Each alternative brings real improvements, but none clears the bar that would…

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I’ve been programming for almost 15 years now, last 5 on mission-critical software in the finance domain. I know the stakes, tradeoffs and…

Yes, if I was to consume all those books at a standard speed, it would take me 2 months of constant listening (no sleep, no meals, no…

Scala.js is genuinely great. It lets backend developers build web applications using the same language, type system, and mental models they…

Scala.js is genuinely great. It lets backend developers build web applications using the same language, type system, and mental models they…

Decisions4s supports loading decision tables from external sources using expression languages. This allows storing decision logic in databases, configuration files, or receiving them from external ser...

Six more months of building practical Scala for real business problems

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Recently, I migrated a significant chunk of SwissBorg’s codebase — four services and one library, totaling more than 170k LOC. The whole…

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This year, the Business4s community is proud to participate in Google Summer of Code 2025 under the Scala Center umbrella. We submitted…

TL;DR: This article covers why Workflows4s was created, its current state, and planned future developments. For technical details, visit…

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My reading slowed down a lot in the last 3 months, due to various reasons (OSS work, conferences, work), but hopefully it will only get…

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YouTube video by Business4s

I try to use AoC as an opportunity to try new languages. After last year’s encounter with Kotlin, I decided to tackle Rust.

This big release bring some long-awaited features: transformations, which take more than 1 case class as input (well, not only case classes 😄 ) and improved Patchers which handle: recursive patchin...

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Last year, I bored you with stats first. This time, let’s start with what you’re probably here for — the most recommended books. After…

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