1
Investigating Linux phantom disk reads
An investigation of weird hardware utilization highlighting some interesting Linux kernel behaviors.
QuestDB Blog
QuestDB is the open-source time-series database for demanding workloads: ultra-low latency, high throughput, tiered storage, and fast SQL on open formats.
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2
The Billion Row Challenge (1BRC) – Step-by-Step from 71s to 1.7s
A step-by-step walkthrough of the Billion Row Challenge, taking a Parallel Java Streams aggregation from 71 seconds down to 1.7 with SIMD and tuning.
3
1BRC merykitty's magic SWAR: 8 lines of code explained in 3k words
A deep dive into merykitty's 8-line SWAR temperature parser from the One Billion Row Challenge, using bitwise tricks and ALU magic with no loops or branches.
4
How we achieved write speeds of 1.4M rows per second
The detailed story of how to build a vector-based storage model from scratch.
5
The Inner Workings of Distributed Databases
Comparison of replication options of time-series databases.
6
Using SIMD to aggregate billions of values per second
How SIMD instructions make aggregations faster in QuestDB, including benchmark results and a comparison with Postgres.
7
Leveraging Rust in our Java database
A guide to adding Rust to a Java codebase with JNI and the rust-maven-plugin.
8
Designing a new concurrent data structure
How to design a lock-free data structure? A detective story for curious developers.