At @jetbrains, we not only provide top-notch programming tools but also conduct cutting-edge pragmatic research. Recently, we presented a new channel algorithm in @kotlin coroutines and the fastest concurrent queue at @PPoPPConf — a top-tier conference on parallel programming. /1

Giving a short talk at the JetBrains booth today at Devoxx — join it at 14:40 if you are also there!

I’m opening my workshop “Concurrent Programming Fundamentals for the AI Era” to external teams for the first time. Concurrency isn’t really about algorithms or APIs. It’s about being able to look at code and see what can happen between threads or coroutines, and how to prevent possible races and bad interleavings. This intuition is the hardest thing to teach. Over the past 8+ years, I’ve taught concurrency at universities and later turned that experience into internal workshops at JetBrains. I ran the workshop several times for 250+ colleagues and received overwhelmingly positive feedback, with many participants saying it changed the way they reason about concurrent code. In the AI era, this skill matters even more. AI can generate code quickly and confidently, but subtle concurrency bugs still need human understanding, careful testing, and debugging intuition. It’s a 4-day, hands-on workshop for JVM developers. Participants implement classic and modern concurrent data structures, dissect tricky bugs, and learn practical testing and debugging techniques in Java or Kotlin. I’m now looking for the first external teams who’d like to try it. If your team works with backend systems, infrastructure, databases, developer tools, coroutines, virtual threads, or other concurrency-heavy software, I’d be happy to talk. 👉 Details: nikitakoval.org/workshop

This Friday, I will be in Paphos, giving a talk about safe debugging for production systems with AppGlass. Join the @jugcyprus meetup if you are in Cyprus! meetup.com/jug-cy/events/315…

We have a dedicated AppGlass booth at J-Spring today, come by if you are here! It’s my first time setting up and leading a booth today, and I love it! It is great to see so many people stop by, ask questions, and get excited about what we’re building.

Programming is no longer the bottleneck in development, at least in our team. Writing specs, planning, and code review are. These are hard-thinking tasks, with almost no routine work left in between, thanks to AI. People are getting tired faster than before. Should we now work less and rest more to recover?

Haven’t cooked syrniki in a while, and this is my first time making them without flour, even though I’d known about that trick. It makes them taste so much better!

It’s so funny and lovely to realize that I started working on concurrency, program analysis, and other non-trivial SE topics at @devexperts, thanks to great mentorship from @tsitelov and @relizarov, and that I’m still in this niche and still enjoy it a lot!

I’m actively interviewing senior+ engineers right now and keep seeing the same pattern in CVs. Many of them are clearly AI-generated, long and meaningless. I find it a very nice filter! If you cannot describe your experience in a clear and concise way, without AI bullshit, you likely won’t be able to do the same at work.

I'm now driving a new product at JetBrains, a safe debugger for production systems. Still, I believe it might also be useful for local programs, as a tracing debugger. Just take a look at the demo on how we collect breakpoint hits and capture the context without pausing the program! Please react if you are interested in using AppGlass locally for debugging, whether manually or with AI. If we see demand, I would happily add this feature 🙌 youtu.be/BK-2ZHi9XPo?si=_dDC…

Happy to make my small contribution with a custom read-write mutex for coroutines here 🙌

On my way to ICFP/SPLASH! Our team is giving two tutorials this Sunday — one on Lincheck and another on algorithms in Kotlin Coroutines. Check the schedule and join us in person or online 🤗 2025.splashcon.org/track/icf…

Reviewing PPoPP papers today — happy to see many strong submissions on concurrency. Remember PPoPP two years ago, the focus was on parallel systems. It’s great to see the shift! PPoPP has a rich history of concurrent algorithms, and I hope it remains a key venue for them.

Last week, there was an internal hackathon at JetBrains. Look at what our team has prototyped in just 48 hours: a Time-Traveling Debugger for IntelliJ IDEA! 🚀 Hope it will become a bigger project🤞