You know that you've become truly famous when Jaromir Hamala mentions you in his commit messages.

One more usage of parallel SQL execution pipeline in QuestDB. This time for ORDER BY + LIMIT clause combination. github.com/questdb/questd…

Caught up with Jaromir Hamala and Peter Veentjer

Friday Java puzzler from the recent @QuestDB bugfix. Can you spot the bug?

Are LLMs of any help when it comes to optimizations in Rust code bases? Recently, I encountered an interesting case where an AI-suggested optimization actually made QuestDB slower, despite appearing more sophisticated on paper. Here is the full story: questdb.com/blog/when-ai-o…

btw, I’m job-hunting 👋 if you hear of something exciting, I’d love to connect.

It's silly that atomic.Uint64 and other atomic values in Golang don't have plain load/store methods. Not saying of advanced memory orders like acquire/release.

System calls are the interface between the user space and the kernel. They are needed for fundamental things like reading a file, and making a network call. But they are also very expensive because they need to do things like saving/restoring registers, page table, stack. More

QuestDB 9.1 is out. While the release includes tons of features like nanosecond timestamp precision, my favorite DX addition is that thanks to Jaromir Hamala it now ships with built-in async-profiler. github.com/questdb/questd…

Is it only me or someone else also thinks that any decent benchmark with many participants sooner or later turns into a mess? github.com/ClickHouse/Cli…

Current status: having fun with vectorized window join code in QuestDB. We went from a brute-force parallel implementation to a much more elegant solution with dense in-memory index and SIMD aggregation on top of it.

Exactly what I think of var syntax in Java / auto in C++.