laplab / clickhouse-speedscope Goto Github PK

Hi, my name is Nikita, I am a low-level Rust engineer.

• New Query Engine of MongoDB. I worked on a compiler to lower queries into internal bytecode as well as a virtual machine to execute this bytecode. Had a lot of fun with performance optimization and correctness.
• Query Profiler of ClickHouse. Implemented low-overhead, always-running sampling profiler, showing which lines of code were slow for a particular query. This feature is turned on by default on all ClickHouse deployments (cloud and on-premise).
• JSON Querying and Binary Storage in YDB. Added functionality to query JSON documents from SQL. I have also invented a custom binary format to store JSON documents to optimize read performance.

This was all in C++, but then I decided to switch to Rust.

After that, I worked in an NDA High-Frequency Trading company for a while. Using Rust, I developed custom time-series storage solution for structured data and contributed to a distributed actor system called Elfo.

• I work in Prisma, where I optimize performance of the query engine written in Rust. This engine powers Prisma ORM, which is the most popular TypeScript ORM on the planet.
• Open-source Rust, see pinned repositories.
• Occasional microcontroller shenanigans and other stuff.

• (EN) SQL's Inner Workings @ Handmade Seattle 2023
• (RU) Introducing JSON Support @ Yandex Database New Features Overview 2020
• (RU) ClickHouse Query Profiler @ Highload++ 2019
• (RU) ClickHouse Query Profiler @ ClickHouse Meetup Novosibirsk 2019 (part 1, part 2)

• I am available for hire for short-term consulting and training.
• The best way to reach me is by email: [email protected]. I usually respond within the same day if I am not on a vacation.
• Memes and experiments can be found on Mastodon.
• You can also ping me on LinkedIn.