Top all-time · #1365
QuestDB
Company blog · questdb.io/blog · on HN as bluestreakdataprogramming
QuestDB is the company blog at questdb.io, writing about data and programming. Since 2019, 51 different Hacker News readers have linked it 144 times, most often “The Billion Row Challenge (1BRC) – Step-by-Step from 71s to 1.7s”. It is still writing: the last post was on 2026-10-29, and you can follow it by feed.
QuestDB is the open-source time-series database for demanding workloads: ultra-low latency, high throughput, tiered storage, and fast SQL on open formats.
Most-linked posts?
- The Billion Row Challenge (1BRC) – Step-by-Step from 71s to 1.7s4 people · 6 mentions · first linked 2024-02-21
- Leveraging Rust in our high-performance Java database3 people · 3 mentions · first linked 2023-09-01
- We Built a SIMD JIT Compiler for SQL in QuestDB3 people · 3 mentions · first linked 2022-01-28
- 1BRC merykitty's magic SWAR: 8 lines of code explained in 3k words2 people · 3 mentions · first linked 2024-03-07
- How Databases handle 10M devices in high-cardinality benchmarks2 people · 3 mentions · first linked 2021-06-30
- 4Bn rows/sec query benchmark: ClickHouse vs. QuestDB vs. Timescale2 people · 3 mentions · first linked 2022-06-01
- We achieved write speeds of 1.4M rows per second2 people · 2 mentions · first linked 2021-05-13
- The mystery of the shrinking FD limit: A deep dive into JVM file limits2 people · 2 mentions · first linked 2023-06-09
- Building a faster hash table for high performance SQL joins2 people · 2 mentions · first linked 2023-12-14
- Using QuestDB to collect infrastructure metrics2 people · 2 mentions · first linked 2023-01-19
What Hacker News says?
71 seconds https://questdb.io/blog/billion-row-challenge-step-by-step/
Comment linking /blog/billion-row-challenge-step-by-step/
on “The One Billion Row Challenge in Go: from 1m45s to 4s in nine solutions”Submitted The Billion Row Challenge (1BRC) – Step-by-Step from 71s to 1.7s as a story · 274 points
HN discussionhttps://questdb.io/blog/billion-row-challenge-step-by-step/
Comment linking /blog/billion-row-challenge-step-by-step/
on “The One Billion Row Challenge in Go: from 1m45s to 4s in nine solutions”Submitted 1BRC merykitty's magic SWAR: 8 lines of code explained in 3k words as a story · 257 points
HN discussionDepends what you call “naive”, but the “idiomatic Java solution” from last week’s post ( https://questdb.io/blog/billion-row-challenge-step-by-step/ ) clocked in at 71 seconds, or 1:11. And just running it on graal was down to 66. “Very memory constrained” would be a massive factor here, 1BRC is not really constrained (let alone very much so), it has 1 billion rows on a 32GB machine.
Comment linking /blog/billion-row-challenge-step-by-step/
on “The One Billion Row Challenge in Go: from 1m45s to 4s in nine solutions”Submitted How we achieved write speeds of 1.4M rows per second as a story · 182 points
HN discussionI edit a database newsletter – https://dbweekly.com/ – so tend to always have my eyes out for new releases, what's coming along, and what not. And I thought I'd share a few more things that have jumped out at me recently in case anyone's in the mood for spelunking. 1. QuestDB – https://questdb.io/ – is a performance-focused, open-source time-series database that uses SQL. It makes heavy use of SIMD and vectorization…
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on “Recently minted database technologies that I find intriguing”Submitted Using SIMD to aggregate billions of values per second as a story · 171 points
HN discussionQuestDB | Technical Content Writer | Full Time | London,UK or Remote At QuestDB we help developers handle explosive amounts of data while getting them started in just a few minutes with the simplest and most accessible time series database. We are looking for an experienced Technical Content Writer to join our fast growing team. You will be writing technical documentation for developers along with explainers and tut…
Comment linking /careers/technical-content-writer/
on “Ask HN: Who is hiring? (October 2020)”Submitted Making a trading Gameboy: A pocket exchange and algo trading platform as a story · 166 points
HN discussionQuestDB (YCS20) | Remote | Full-time| Senior Cloud Engineer Hi all! At QuestDB, we have built the fastest open source time series database from the ground up to offer breakthrough performance for real-time analytics using SQL. We bring experience and technical approaches from low-latency trading to leverage real-time data processing in various use cases and industries. Our users deploy QuestDB to make time series an…
Comment linking /careers/front-end-engineer/
on “Ask HN: Who is hiring? (April 2021)”Submitted NYC taxi meter and options pricing as a story · 125 points
HN discussionQuestDB | Head of Dev Rel / community manager |Remote, London/SF QuestDB is a an open source SQL database to process time-series, faster. The founding team comes from low-latency trading; fast software and timestamped data are part of our DNA. Through QuestDB, companies can harness the power of real-time and big data processing in a wide array of use cases and industries, from financial data to IoT and connected car…
Comment linking /careers
on “Ask HN: Who is hiring? (April 2020)”Submitted Debugging distributed database mysteries with Rust, packet capture and Polars as a story · 88 points
HN discussionQuestDB | Core Database Engineer (Java, C++, Rust) | full time | Remote | https://questdb.io/ About QuestDB We are building an open source time series database focused on performance and simplicity. QuestDB is used to store, process and analyze time series data in real-time across a wide range of industries, such as Financial Services, Energy, Manufacturing, Web3 and Space Exploration. Fortune 500 companies such as…
Comment linking /careers/core-database-engineer/
on “Ask HN: Who is hiring? (January 2024)”Submitted How Databases handle 10M devices in high-cardinality benchmarks as a story · 63 points
HN discussionQuestDB | Head of dev relations | San Francisco | Full-time QuestDB ( http://questdb.io ) is a startup building an open-source time-series database that makes nanosecond-latency performance accessible to everyone. By focusing on software core software efficiency we are able to do two things. First, we help developers build true realtime applications without requiring complex technology vendors. Second, we enable mor…
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on “Ask HN: Who is hiring? (March 2020)”Submitted Things we learned about sums as a story · 43 points
HN discussionQuestDB (YCS20) | several positions | Remote QuestDB is an open source time-series database built from the ground up in zero-GC Java and C++. Our users, such as Verizon, deploy QuestDB to make time series analysis fast and convenient in fintech, industrials, IoT, application monitoring and machine learning. https://questdb.io/careers/ Developer Relations Engineer Senior Cloud Engineers Software Engineers, Backend So…
Comment linking /careers/
on “Ask HN: Who is hiring? (July 2021)”Submitted Importing 3m rows/SEC with io_uring as a story · 25 points
HN discussionQuestDB | Python/cloud engineers, UX Designer, Solution engineer, Core Database Engineers | 100% Remote | QuestDB (YCS20) is building the fastest open source time series database. We hire talented and passionate people who share our mission to empower developers to solve their problems with data. https://questdb.io/careers https://github.com/questdb/questdb
Comment linking /careers
on “Ask HN: Who is hiring? (June 2022)”Submitted Show HN: QuestDB – fast time series database, zero-GC Java as a story · 22 points
HN discussionQuestDB | Remote | Full-time | questdb.io QuestDB is one of the fastest-growing time series databases and is growing its engineering team. QuestDB is open source, and the code is available under Apache 2.0 at https://github.com/orgs/questdb/ Our team is obsessed with performance; it is a blend of low latency zero-GC Java, C++ and Rust (for the entire distributed architecture). Check out our blog post for heavily tec…
Comment linking /careers/core-database-engineer/
on “Ask HN: Who is hiring? (August 2024)”Submitted 4Bn rows/sec query benchmark: ClickHouse vs. QuestDB vs. Timescale as a story · 20 points
HN discussionQuestDB | remote | https://github.com/questdb/questdb We help developers handle explosive amounts of data while getting them started in just a few minutes with the fastest and most accessible open source time series database. We're hiring across engineering, developer relations, customer success, talent acquisition. Link: https://questdb.io/careers/
Comment linking /careers/
on “Ask HN: Who is hiring? (November 2021)”Submitted We Built a SIMD JIT Compiler for SQL in QuestDB as a story · 16 points
HN discussionQuestDB (YCS20) | several positions | Remote QuestDB is an open source time-series database built from the ground up in the name of performance in zero-GC Java and C++. https://questdb.io/careers/ Developer Relations Engineer Senior Cloud Engineers Software Engineer, Backend Software Engineer, Frontend
Comment linking /careers/
on “Ask HN: Who is hiring? (June 2021)”Submitted QuestDB – Fast open source relational time series database as a story · 14 points
HN discussionQuestDB the fastest open source time series database built from the ground up to offer breakthrough performance for real-time analytics using SQL. We are a remote-first company based in London and backed by leading venture capital firms and Y Combinator. Roles: Senior Cloud Architect: https://questdb.io/careers/senior-cloud-architect/ Software Engineer, Backend: https://questdb.io/careers/backend-software-engineer/
Comment linking /careers/backend-software-engineer/
on “Ask HN: Who is hiring? (March 2021)”Submitted Show HN: Demo geospatial and timeseries queries on 250k unique devices as a story · 7 points
HN discussion
