Kyo RC7 is out, with a brand new kernel and a big round of stabilization on the way to 1.0 🚀 - kyo-sql: embedded SQLite, and Dolt backends where AI agents can work on a git-like DB including in the browser 😱 - kyo-system: file access on JVM, JS, Native, and Wasm, including file watching, locks, and more - kyo-ai: typed decisions with calibrated probabilities via Jev, and agents that call any MCP server's tools - Scala.js effect dispatch 10x to 18x faster ⚡ - Time travel with Clock.withTimeOffset Yet another packed release!! 🔥

who would have thought type safety would be all the rage in the age of AI 😆 kyo-ai is getting a Jev integration and it's mind blowing how useful this kind of model is! It's nice to see the industry moving on from "we just need bigger models". Examples in 🧵

I think it's been over a year since I last rewrote Kyo's kernel. Yes, that was looong 😆 I'm on my 11th complete rewrite right now and I must say that the maturity of LLMs truly changed the experience. On each version, I got performance comparisons across multiple libraries, in-depth profiling including JIT compilation details, bytecode and asm inspection, exploration of multiple possible paths, research of prior art, all easily automated Yes, I shouted at Claude numerous times, it made terrible mistakes 🤖 It lost a significant part of the work, preventing it from degrading the kernel into an impure VM is a constant uphill battle, it can produce extremely overengineered solutions, but damn... this thing is a marvel if you're able to make it work as what it is: a tool Long story short: Kyo's long-overdue fixes for Scope and a step change in the performance of the kernel are close to shipping 🙌

Kyo rewrote Postgres and MySQL wire protocols so you never have to see JDBC again 🥳 RC6 is out. Write once, run anywhere, turbocharged 🚀🚀🚀 kyo-sql gives you raw SQL plus a typed DSL that mirrors SQL syntax, statements suspend fibers instead of blocking threads, and one set of sources compiles for JVM, JS, Native, Wasm, and GraalVM Under it all is kyo-net and kyo-ffi: one C transport and TLS stack over io_uring, epoll, kqueue, NIO, Node, and BoringSSL. Yes, your Node.js process now runs io_uring and BoringSSL 😱 Heads up: JDK 25 is now required for the main modules Bonus: kyo-ai now runs on your Claude Code or Codex subscription instead of per-token billing 💸

📢 A decade after I published Quill, kyo-sql is landing with a fresh new approach! 🙌 ✅ First-class support for both raw SQL and typed queries ✅ Two-way interop: raw SQL in typed queries and typed queries in raw SQL 🤩 ✅ Support for JVM, Native, Wasm, JS on top of Kyo's new high-perf async network stack ✅ Pluggable drivers, MySQL and Postgres included, with DB-specific features ✅ Compile-time query generation without friction via inlining 🙌🏼 Something that has been great is how Kyo's Record has enabled much simpler and ergonomic designs. It's a cornerstone of a few modules so far: fully typed http routes (including filters!), seamless state handling in durable workflows, and now typed SQL queries with semantics close to relational algebra, reducing friction. Yes, flexible structural typing with rich type-level transformations is a reality in Scala 3 with Kyo! 🧙🏼‍♂️ I realized a long time ago that expressing SQL as collection/monadic operations like Quill did has always been a dead end. This new work corrects the record and mirrors SQL syntax in the typed DSL instead This module gets us much closer to 1.0 in time with the upcoming Scala 3.9 LTS. It's been a long journey, and we're finally close to the finish line!!! 🔥🔥🔥

📢 Kyo is getting a brand new network stack with backends for kqueue, epoll, nio, node, and io_uring! It works across JVM, JS, Wasm, and Native with TLS support in all 😎 Throughput is up to 2x ZIO and 4.7x Cats, with 9-29x fewer allocations per request 😱

People are so close to discovering kyo-ai and the joy of seamless deterministic workflows with typed generation :)