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The PlanetScale serverless driver for JavaScript
You can now use PlanetScale in HTTP-only environments like Cloudflare Workers, Vercel Edge Functions, and Netlify Edge Functions.
Topics /
Databases & Data
The most popular blog posts about databases & data on Hacker News. 2,338 posts.
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What it means to be a Postgres extension
Because Citus is an extension to PostgreSQL and not a fork, the effort required to remain compatible with the latest versions of the open source PostgreSQL database has been dramatically reduced. After a new PostgreSQL version is released, Citus packages are often updated and in sync within days.
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Embedding user-defined indexes in Apache Parquet
Posted on: Mon 14 July 2025 by Qi Zhu (Cloudera), Jigao Luo (Systems Group at TU Darmstadt), and Andrew Lamb (InfluxData)
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Fuzzy Name Matching in Postgres
The page "Falsehoods Programmers Believe About Names" covers some of the ways names are hard to deal with in programming. This post will ignore most of those complexities, and deal with the problem of matching up loose user input to a database of names.
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We’re in the Middle of a Data Engineering Talent Shortage
Stay up-to-date with the latest news, practical tips & best practices from Qlik on data analytics, data integration, data literacy, and big data analytics.
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British Columbia, Time Zones, and Postgres
This year, British Column has moved to year-round Pacific Time. How does that affect date data?
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The Reactive Monolith – How to Move from CRUD to Event Sourcing
Photo by Alex Wong on UnsplashWe all heard that story before: The big monolith which brings so much business value and faithfully serves our customers is starting to slow us down. The product vision is evolving towards reactive features, which means reacting in real time to multiple domain events in the right context…
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Living Without Atomic Clocks
If someone knows even a little about Spanner, the first question they have is: "How does CockroachDB provide external consistency without atomic clocks?"
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The Bw-Tree: A B-tree for New Hardware
Explore research at Microsoft, a site featuring the impact of research along with publications, products, downloads, and research careers.
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TrueCrypt Master Key Extraction And Volume Identification
One of the disclosed pitfalls of TrueCrypt disk encryption is that the master keys must remain in RAM in order to provide fully transparent...
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Using Vectorize to build an unreasonably good search engine in 160 lines of code
PartyKit now includes a vector database and access to an embedding model. Here’s a guide on how to use them to build a search engine.
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OpenSearch 1.0
Today is a really good day for the OpenSearch project. Since its start, the goal has been to quickly produce a version of OpenSearch that’s ready to use in production...
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WAL Mode in LiteFS
LiteFS v0.3.0 now supports SQLite's write-ahead log journal mode.
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Breaking up is hard to do: Chunking in RAG applications
A look at some of the current thinking around chunking data for retrieval-augmented generation (RAG) systems.
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The Empty Promise of Data Moats
Data has long been lauded as a competitive moat for companies, and that narrative’s been further hyped with the recent wave of AI startups. Network effects have been similarly promoted as a defensible force in building software businesses. So of course, we constantly hear about the combination of the two: “data…
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Analyzing Django requirement files on GitHub
Safety gives security teams real-time visibility and governance over every AI tool, package, MCP server, and IDE extension across their developer fleet.
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Optimal Shard Placement in a Petabyte Scale Elasticsearch Cluster
At the heart of Meltwater’s and Fairhair.ai’s information retrieval systems lies a collection of Elasticsearch clusters containing billions of social media posts and editorial articles. The index shards in our clusters vary greatly in their access pattern, workload and size which presents some very interesting…
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Serving Dynamic Vector Tiles from PostGIS
Guide to building up a tile server and map client from scratch with PostGIS and PostgreSQL.
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Translating Between Statistics and Machine Learning
This SEI Blog post explores the differences between statistics and machine learning and how to translate statistical models into machine learning models.
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We scaled the GitHub API with a sharded, replicated rate limiter in Redis
Adventures in leveling up our API rate limiting infrastructure
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DuckDB Community Extensions
DuckDB extensions can now be published as DuckDB Community Extensions. The repository makes it easier for users to install extensions using the INSTALL extension_name FROM community syntax. Extension developers avoid the burdens of compilation and distribution.
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Analysis of the Alexa Top 1M sites
Prior to the release of the Mozilla Observatory a year ago, I ran a scan of the Alexa Top 1M websites. Despite being available for years, the usage rates of ...