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People Keep Inventing Prolly Trees
A novel data structure has been invented four times now, with three different names. We think that's a good sign.
New
The latest blog posts to take off on Hacker News. 2,337 posts.
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Scaling our observability platform by embracing wide events and replacing OTel
Read how we scaled our observability platform from 19PB to 100PB and 500 trillion rows by replacing OpenTelemetry with a native ClickHouse-to-ClickHouse pipeline, embracing wide events and cutting CPU usage by 90%.
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A Python-first data lakehouse
Prototype in Marimo, deploy in Bauplan. Learn how to build production-grade pipelines from notebooks with a Python-native stack. No handoffs, no rewrites.
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Time Series Forecasting with Graph Transformers
Introduction to Kumo Relational — the relational foundation model for predictive AI on relational data
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Working on databases from prison
How Preston Thorpe went from a prison cell and a college program to a full-time database engineering role at Turso, working on the SQLite rewrite in Rust.
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Model Once, Represent Everywhere: UDA (Unified Data Architecture) at Netflix
Introducing UDA, the knowledge-graph-based architecture that translates conceptual domain models into consistent schemas and data…
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How we decreased GitLab repo backup times from 48 hours to 41 minutes
Learn how we tracked a performance bottleneck to a 15-year-old Git function and fixed it, leading to enhanced efficiency that supports more robust backup strategies and can reduce risk.
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Jepsen: TigerBeetle 0.16.11
TigerBeetle is an Online Transactional Processing (OLTP) database built for double-entry accounting with a strong emphasis on safety and speed. It builds on the Viewstamped Replication (VR) consensus protocol to offer Strong Serializable consistency. Unlike general-purpose databases, TigerBeetle stores only accounts…
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Conformance checking at MongoDB: Testing that our code matches our TLA+ specs
Testing code fidelity with TLA+ specs at MongoDB. Explore conformance checking experiences and agile modelling in distributed systems.
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Valkey Turns One: Community fork of Redis
Valkey is not only thriving, but now outperforming Redis 8.0 in real world benchmarks.
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ClickHouse raises $350M Series C
ClickHouse, Inc., a leader in real-time analytics, data warehousing, observability, and AI/ML, today announced it has raised $350 million in Series C financing.
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HTAP is Dead
Databricks offers a unified platform for data, analytics and AI. Build better AI with a data-centric approach. Simplify ETL, data warehousing, governance and AI on the Data + AI Platform.
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Postgres IDE in VS Code
We are excited to announce the public preview of the brand-new PostgreSQL extension for Visual Studio Code (VS Code), designed to simplify PostgreSQL...
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KumoRFM: A Foundation Model for In-Context Learning on Relational Data
Introduction to Kumo Relational — the relational foundation model for predictive AI on relational data
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Litestream: Revamped
Bringing in what we learned from LiteFS
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Fabric Is Just Plain Unreliable, and Microsoft's Hiding It
Update 2025/07/21: Microsoft heard the complaints, and fixed the reliability added a better status page. Baby steps. Last week, Microsoft Fabric went down yet again for hours on multiple continents. Oh, you didn’t hear about it? Let’s talk about why. First, Fabric’s status page is fabricated bullshit. The link…
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A lost decade chasing distributed architectures for data analytics?
We benchmark DuckDB on a 2012 MacBook Pro to decide: did we lose a decade chasing distributed architectures for data analytics?
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Getting AI to write good SQL
Learn about text-to-SQL techniques like context building and table retrieval, LLM-as-a-judge, and LLM prompting and post-processing.
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Migrating to Postgres
Since early 2022, Motion was on CockroachDB. Cockroach has many qualities going for it: effortless horizontal scaling, especially when…
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Databricks acquires Neon
Databricks agrees to acquire Neon, a serverless Postgres database company, to bring speed and flexibility to production workloads.
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Build real-time knowledge graph for documents with LLM
Build a Neo4j knowledge graph from Markdown documents with an LLM. CocoIndex updates the extracted relationships as documents change.
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OpenTelemetry protocol with Apache Arrow
We are excited to announce the next phase of the OpenTelemetry Protocol with Apache Arrow project (OTel-Arrow). We began this project several years ago with the goal of bridging between OpenTelemetry data and the Apache Arrow ecosystem. Apache Arrow is a framework designed for zero-copy exchange of structured data…
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Continuous glucose monitors reveal variable glucose responses to the same meals
In this exploratory analysis of 2 highly controlled crossover studies in 30 participants without diabetes, the same meals led to highly variable glucose responses, as measured with continuous glucose monitors.
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OpenSearch 3.0 Released
The OpenSearch Software Foundation today announced the general availability of OpenSearch 3.0. This major release delivers a 9.5x performance improvement over OpenSearch 1.3, building on benchmarking data that showed earlier iterations of OpenSearch operating 1.6x faster than its closest industry competitor.
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Waiting for Postgres 18: Accelerating Disk Reads with Asynchronous I/O
Postgres 18 introduces Asynchronous I/O (AIO) that can dramatically improve read performance, especially in the cloud. Learn how these changes and the new io_method setting work and see why our benchmark results show that io_uring is the recommended setting for maximizing I/O performance in Postgres 18 over the…
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Alignment is not free: How model upgrades can silence your confidence signals
Delegate investigative work to AI agents, from L1 to L3 reviews, with consistency, auditability and traceability.
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Jepsen: Amazon RDS for PostgreSQL 17.4
AWS’s Sergey Melnik, along with HN commenters matashii and Ants Aasma, have identified the cause of Long Fork in PostgreSQL clusters. As described a 2013 mailing list post , the order in which a PostgreSQL primary makes transactions visible is determined by an in-memory lock. Secondaries, however, make transactions…
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How NASA Is Using Graph Technology and LLMs to Build a People Knowledge Graph
Missed NASA’s People Graph webinar? Catch the recap and see how graph technology and AI are shaping the future of workforce intelligence.
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Anatomy of a SQL Engine
Blog for DoltHub, a website hosting databases made with Dolt, an open-source version-controlled SQL database with Git-like semantics.