Unorthodox Java: Building QuestDB
bjug.jerrinot.info
June 28, 2025 at 9:20 AM
This guy rules: building a market making simulator in a Gameboy format. h/t @quantian.bsky.social
questdb.com/blog/making-...
questdb.com/blog/making-...
Making a trading Gameboy: A pocket exchange and algo trading platform | QuestDB
An exchange and algo trading station in your pocket!
questdb.com
August 30, 2025 at 12:27 AM
This guy rules: building a market making simulator in a Gameboy format. h/t @quantian.bsky.social
questdb.com/blog/making-...
questdb.com/blog/making-...
InfluxDBプロトコルやREST APIでデータ登録ができてPostgreSQLプロトコルでSQLでの解析ができる時系列DB。InfluxDBやTimescaleに比べてストリーム登録が圧倒的に高速らしい。
GitHub - questdb/questdb: An open source time-series database for fast ingest and SQL queries
QuestDB is an open source time-series database for fast ingest and SQL queries - questdb/questdb
github.com
August 3, 2024 at 11:42 PM
InfluxDBプロトコルやREST APIでデータ登録ができてPostgreSQLプロトコルでSQLでの解析ができる時系列DB。InfluxDBやTimescaleに比べてストリーム登録が圧倒的に高速らしい。
This is what happens when you put together QuestDB and github.com/finos/perspe..., a data visualization tool designed for large and streaming data. Look at this cool blotter updating every 50ms with market data coming from QuestDB.
February 20, 2025 at 3:42 PM
This is what happens when you put together QuestDB and github.com/finos/perspe..., a data visualization tool designed for large and streaming data. Look at this cool blotter updating every 50ms with market data coming from QuestDB.
4. Analytics (DuckDB, ClickHouse, DataFusion CLI, Databend)
5. Time series (Timescale, QuestDB, Influx)
6. Sharded, distributed key-value (FoundationDB, TiKV)
7. Non-sharded, distributed key-value (etcd, rqlite, Tigerbeetle, zookeeper)
8. Embedded key-value (RocksDB, BerkeleyDB, LMDB)
5. Time series (Timescale, QuestDB, Influx)
6. Sharded, distributed key-value (FoundationDB, TiKV)
7. Non-sharded, distributed key-value (etcd, rqlite, Tigerbeetle, zookeeper)
8. Embedded key-value (RocksDB, BerkeleyDB, LMDB)
December 1, 2024 at 3:28 PM
4. Analytics (DuckDB, ClickHouse, DataFusion CLI, Databend)
5. Time series (Timescale, QuestDB, Influx)
6. Sharded, distributed key-value (FoundationDB, TiKV)
7. Non-sharded, distributed key-value (etcd, rqlite, Tigerbeetle, zookeeper)
8. Embedded key-value (RocksDB, BerkeleyDB, LMDB)
5. Time series (Timescale, QuestDB, Influx)
6. Sharded, distributed key-value (FoundationDB, TiKV)
7. Non-sharded, distributed key-value (etcd, rqlite, Tigerbeetle, zookeeper)
8. Embedded key-value (RocksDB, BerkeleyDB, LMDB)
QuestDB (YC S20) Is Hiring a Sales Engineer | Discussion
Pre-Sales Engineer, North America | Careers at QuestDB | QuestDB
Join QuestDB as our Pre-Sales Engineer for North America. Own the technical side of every enterprise sales cycle: discovery, proofs of concept, benchmarks and architecture, on US hours.
questdb.com
September 23, 2026 at 12:20 PM
QuestDB (YC S20) Is Hiring a Sales Engineer | Discussion
🦣 update of #QUESTDB (Database of Highly-Accurate Excitation Energies) 🦖 The latest #preprint on #QUESTDB is just out on @arXiv (arxiv.org/abs/2506.11590) with the corresponding @github repo (github.com/pfloos/QUESTDB) where we have compiled all the data in various formats. Please share! #compchem
The QUEST Database of Highly-Accurate Excitation Energies
We report theoretical best estimates of vertical transition energies (VTEs) for a large number of excited states and molecules: the \textsc{quest} database. This database includes 1489 \emph{aug}-cc-p...
arxiv.org
June 16, 2025 at 4:12 AM
🦣 update of #QUESTDB (Database of Highly-Accurate Excitation Energies) 🦖 The latest #preprint on #QUESTDB is just out on @arXiv (arxiv.org/abs/2506.11590) with the corresponding @github repo (github.com/pfloos/QUESTDB) where we have compiled all the data in various formats. Please share! #compchem
A couple of data infrastructure companies that come to mind that seem chill and interesting and enjoyable to work for (not a complete list).
Follow their devs! Maybe work for them!
Follow their devs! Maybe work for them!
October 28, 2024 at 6:08 PM
A couple of data infrastructure companies that come to mind that seem chill and interesting and enjoyable to work for (not a complete list).
Follow their devs! Maybe work for them!
Follow their devs! Maybe work for them!
A few weeks ago I spoke at #bigdataldn about how the #questdb team sees the future of fast databases. I've now written a summary for our blog questdb.io/blog/the-fut.... Highlights of our thinking in the thread 🧵
The future of fast databases: Lessons from a decade of QuestDB
Explore lessons from a decade of QuestDB and a look at the future of fast databases, presented at Big Data London 2024.
questdb.io
October 30, 2024 at 10:33 AM
A few weeks ago I spoke at #bigdataldn about how the #questdb team sees the future of fast databases. I've now written a summary for our blog questdb.io/blog/the-fut.... Highlights of our thinking in the thread 🧵
🚀 QuestDB seeks a Core Database Engineer to boost its open‑source, real‑time time‑series DB. Work with C++, Rust & Java (zero‑GC), shape performance, and engage a global community—all remote. #Database #TimeSeries #OpenSource #Rust #Cplusplus aihackerjobs.com/company/ques...
QuestDB Job - Core Database Engineer · AI Hacker Jobs
Core Database Engineer at QuestDB - C++, Rust, Java, Git, CI, Cloud, Remote, Open Source, Database, SQL, Time Series | Apply now on AIHackerJobs.com
aihackerjobs.com
October 16, 2025 at 2:12 PM
🚀 QuestDB seeks a Core Database Engineer to boost its open‑source, real‑time time‑series DB. Work with C++, Rust & Java (zero‑GC), shape performance, and engage a global community—all remote. #Database #TimeSeries #OpenSource #Rust #Cplusplus aihackerjobs.com/company/ques...
QuestDB 9.0 Released For High Performance, Time-Series Database - https://www.phoronix.com/news/QuestDB-9.0
QuestDB 9.0 Released For High Performance, Time-Series Database
QuestDB 9.0 debuted today as the latest major update to this high performance, time-series database that is open-source under an Apache 2.0 license. QuestDB continues to be built using a combination of Java, C++, and Rust for being an interesting time-series database...
www.phoronix.com
July 11, 2025 at 10:42 AM
QuestDB 9.0 Released For High Performance, Time-Series Database - https://www.phoronix.com/news/QuestDB-9.0
We’ve spent months making QuestDB 9.0 the fastest, most robust time-series DB we’ve ever shipped.
✔️ N-dimensional arrays
✔️ Smarter materialized views
✔️ Ultra-low latency
✔️ Better UX
Built with your feedback
questdb.com/blog/questdb...
#questdb #githubrelease #opensource
✔️ N-dimensional arrays
✔️ Smarter materialized views
✔️ Ultra-low latency
✔️ Better UX
Built with your feedback
questdb.com/blog/questdb...
#questdb #githubrelease #opensource
July 15, 2025 at 10:13 AM
We’ve spent months making QuestDB 9.0 the fastest, most robust time-series DB we’ve ever shipped.
✔️ N-dimensional arrays
✔️ Smarter materialized views
✔️ Ultra-low latency
✔️ Better UX
Built with your feedback
questdb.com/blog/questdb...
#questdb #githubrelease #opensource
✔️ N-dimensional arrays
✔️ Smarter materialized views
✔️ Ultra-low latency
✔️ Better UX
Built with your feedback
questdb.com/blog/questdb...
#questdb #githubrelease #opensource
🚀 GitHub Intelligence Drop
react-native-windows (C++ • 🟢)
⭐ 17.3K → https://github.com/microsoft/react-native-windows
questdb (Java • 🟢)
⭐ 17.3K → https://github.com/questdb/questdb
⚡ Only signal. Zero noise.
react-native-windows (C++ • 🟢)
⭐ 17.3K → https://github.com/microsoft/react-native-windows
questdb (Java • 🟢)
⭐ 17.3K → https://github.com/questdb/questdb
⚡ Only signal. Zero noise.
September 21, 2026 at 2:38 AM
🚀 GitHub Intelligence Drop
react-native-windows (C++ • 🟢)
⭐ 17.3K → https://github.com/microsoft/react-native-windows
questdb (Java • 🟢)
⭐ 17.3K → https://github.com/questdb/questdb
⚡ Only signal. Zero noise.
react-native-windows (C++ • 🟢)
⭐ 17.3K → https://github.com/microsoft/react-native-windows
questdb (Java • 🟢)
⭐ 17.3K → https://github.com/questdb/questdb
⚡ Only signal. Zero noise.
株式取引をシミュレートできる小型ゲーム機「トレーディング・ゲームボーイ」
https://gigazine.net/news/20241112-trading-gameboy/
https://gigazine.net/news/20241112-trading-gameboy/
株式取引をシミュレートできる小型ゲーム機「トレーディング・ゲームボーイ」
株式取引をシミュレーションできるゲーム機「trading Gameboy(トレーディング・ゲームボーイ)」をQuestDBの開発者であるタンクレード・コラード氏が開発しました。計算処理にはRaspberry Pi Picoを使っており、プログラムも基板も独自設計となっています。
gigazine.net
November 12, 2024 at 11:00 AM
株式取引をシミュレートできる小型ゲーム機「トレーディング・ゲームボーイ」
https://gigazine.net/news/20241112-trading-gameboy/
https://gigazine.net/news/20241112-trading-gameboy/
#QuestDB 9.0 is out! This high-performance, #opensource #timeseries #database now supports multi-dimensional arrays and a new binary line protocol for better throughput. Enhance your skills with OS-SCi's specialized courses at https://os-sci.com https://www.phoronix.com/news/QuestDB-9.0
July 24, 2025 at 4:00 PM
#QuestDB 9.0 is out! This high-performance, #opensource #timeseries #database now supports multi-dimensional arrays and a new binary line protocol for better throughput. Enhance your skills with OS-SCi's specialized courses at https://os-sci.com https://www.phoronix.com/news/QuestDB-9.0
questdb / questdb
69 stars today
https://github.com//questdb/questdb
An open source time-series database for fast ingest and SQL queries
69 stars today
https://github.com//questdb/questdb
An open source time-series database for fast ingest and SQL queries
GitHub - questdb/questdb: An open source time-series database for fast ingest and SQL queries
An open source time-series database for fast ingest and SQL queries - questdb/questdb
github.com
May 29, 2024 at 7:50 AM
questdb / questdb
69 stars today
https://github.com//questdb/questdb
An open source time-series database for fast ingest and SQL queries
69 stars today
https://github.com//questdb/questdb
An open source time-series database for fast ingest and SQL queries
Interesting benchmark: "TimescaleDB vs. QuestDB: Performance benchmarks and overview" #TimeSeries #data #database #performance #PostgreSQL #IoT #SQL
questdb.com/blog/timesca...
questdb.com/blog/timesca...
TimescaleDB vs. QuestDB: Performance benchmarks and overview | QuestDB
Compare QuestDB and TimescaleDB with up-to-date performance benchmarks and architectural comparisons.
questdb.com
December 12, 2025 at 3:19 PM
Interesting benchmark: "TimescaleDB vs. QuestDB: Performance benchmarks and overview" #TimeSeries #data #database #performance #PostgreSQL #IoT #SQL
questdb.com/blog/timesca...
questdb.com/blog/timesca...
Super nice writing on Async-profiler and a Linux kernel bug by @jerrinot.bsky.social / @questdb.bsky.social
questdb.com/blog/async-p...
questdb.com/blog/async-p...
How a Kernel Bug Froze My Machine: Debugging an Async-profiler Deadlock | QuestDB
How I investigated and worked around a kernel bug that caused async-profiler to freeze my machine whenever I tried to use a profiler.
questdb.com
December 12, 2025 at 8:51 AM
Super nice writing on Async-profiler and a Linux kernel bug by @jerrinot.bsky.social / @questdb.bsky.social
questdb.com/blog/async-p...
questdb.com/blog/async-p...
QuestDB | Peak time-series performance database search.app/pN5jBT7GnHDH...
QuestDB | Peak time-series performance database
QuestDB is the world's fastest growing open-source time-series database. It offers massive ingestion throughput, millisecond queries, powerful time-series SQL extensions, and scales well with minimal ...
search.app
February 5, 2025 at 8:58 PM
QuestDB | Peak time-series performance database search.app/pN5jBT7GnHDH...
Finally got QuestDB running! Here’s what I learned.
ORM:
Limited options. Python's SQLAlchemy works, but Sync only.
Meanwhile Go lacks any support.
Now inclined to use Golang for ingestion and Python for maintenance.
Would you sacrifice convenience for speed?
ORM:
Limited options. Python's SQLAlchemy works, but Sync only.
Meanwhile Go lacks any support.
Now inclined to use Golang for ingestion and Python for maintenance.
Would you sacrifice convenience for speed?
November 26, 2024 at 7:11 PM
Finally got QuestDB running! Here’s what I learned.
ORM:
Limited options. Python's SQLAlchemy works, but Sync only.
Meanwhile Go lacks any support.
Now inclined to use Golang for ingestion and Python for maintenance.
Would you sacrifice convenience for speed?
ORM:
Limited options. Python's SQLAlchemy works, but Sync only.
Meanwhile Go lacks any support.
Now inclined to use Golang for ingestion and Python for maintenance.
Would you sacrifice convenience for speed?
#QuestDB 9.0.0 has been released ( #SQL / #TimeSeriesDBMS / #InfluxDB / #eXtremeDB / #MongoDB / #TimescaleDB / #DBMS / #RDBMS / #Database / #DB ) questdb.io
QuestDB | Next-generation time-series database
QuestDB is the world's fastest growing time-series database. Engineered for demanding workloads—from trading floors to stock exchanges—it delivers ultra-low latency, high ingestion throughput, and a m...
questdb.io
July 13, 2025 at 9:21 AM
#QuestDB 9.0.0 has been released ( #SQL / #TimeSeriesDBMS / #InfluxDB / #eXtremeDB / #MongoDB / #TimescaleDB / #DBMS / #RDBMS / #Database / #DB ) questdb.io
Some fast databases are already implementing some of these ideas, but to the best of my knowledge there is still none implementing them all. At #questdb we are working to make this happen. Stay tuned!
October 30, 2024 at 10:35 AM
Some fast databases are already implementing some of these ideas, but to the best of my knowledge there is still none implementing them all. At #questdb we are working to make this happen. Stay tuned!
I did some OpenJDK commit exploration and I thought I could blog about it too. Here it is: questdb.com/blog/jvm-cur...
How a 40-Line Fix Eliminated a 400x Performance Gap | QuestDB
A deep dive into an OpenJDK commit that replaced slow /proc file parsing with a single syscall, revealing obscure Linux kernel internals and a 20-year-old optimization opportunity.
questdb.com
January 13, 2026 at 11:43 PM
I did some OpenJDK commit exploration and I thought I could blog about it too. Here it is: questdb.com/blog/jvm-cur...