The TTL-Driven Coroutine Cache: Because Life Is Too Short for Stale Data

I decided to publish some interesting libraries I develop for internal experiments – after all, one can only watch their side projects gather dust for so long before letting them roam free on GitHub. This time, I want to show off a TTL-based in-memory cache for coroutines, complete with a neat annotation-based code generation trick... Continue reading

Ultra-Precise Time-Synchronization & Timestamping in Kotlin

Continuing my saga of posts about squeezing every last drop out of Kotlin like it’s an overripe lemon of potential. 🥴 Just a friendly warning: don’t even think about using this in production until you’ve at least test-driven it in a few less judgmental environments. You know, like staging, or your cat’s laptop. Nothing says... Continue reading

Building a Sub-100 µs Matching Engine with Kotlin Coroutines

In the world of high-frequency trading (HFT), every microsecond counts. Small inefficiencies can quickly snowball into significant costs or missed opportunities. With Kotlin’s robust coroutine model, we can harness lightweight concurrency to power a matching engine that can respond within sub-100 microseconds. In this post, I’ll walk through the design considerations, coroutine architecture, and performance... Continue reading