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Topics /
Databases & Data
The most popular blog posts about databases & data on Hacker News. 1,888 posts.
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We're wasting money by only supporting gzip for raw DNA files
Stylised graphics of money with DNA helix in the foreground.
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SQL needed structure
The data on the page is presented in a hierarchichal structure. The movie page contains a director, a list of genres, a list of actors, and each actor in the list contains a list of characters they played in the movie. You can't sensibly fit all of this into a single flat structure like a relation.
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What Does a Database for SSDs Look Like?
What does a relational database designed specifically for local SSDs look like? Postgres, MySQL, SQLite and many others were invented in the 90s and 00s, the era of spinning disks. A local NVMe SSD has ~1000x improvement in both throughput and latency. Design decisions like write-ahead logs, large page sizes, and…
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Things I Hate About PostgreSQL (2013)
PostgreSQL Talk
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Google Street View in 2026
Benchmarks & Tips for Big Data, Hadoop, AWS, Google Cloud, PostgreSQL, Spark, Python & More...
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Do NLP Beyond English
7000+ languages are spoken around the world but NLP research has mostly focused on English. This post outlines why you should work on languages other than English.
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The World's 2.75B Buildings
Benchmarks & Tips for Big Data, Hadoop, AWS, Google Cloud, PostgreSQL, Spark, Python & More...
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PostgreSQL vs MySQL: an apples to oranges comparison
Every time we see people look at PostgreSQL and MySQL on the internet it falls into a flame war fast. I think that a large part of the pr...
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Query Engines: Push vs. Pull
People talk a lot about “pull” vs. “push” based query engines, and it’s pretty obvious what that means colloquially, but some of the details can be a bit hard to figure out.
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A Short Chronology of Deep Learning for Tabular Data
Occasionally, I share research papers proposing new deep learning approaches for tabular data on social media, which is typically an excellent discussion…
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SciPy 2016: “Data Science is Software” tutorial
Last week, Peter and I gave a tutorial at SciPy 2016. In keeping with our recent thinking about reproducibility and organization , the idea was to look at how some of the hard-won lessons and best practices from modern software engineering can be applied to data science work.
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Street address errors in Google Maps
(or actually they do, but they don’t use this knowledge effectively)Update, April 26, 2025: the address fix for W 6th Ave is live, mostly. Going forward I wish that Google Maps would make it harder…
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Databases always have a schema (2018)
You're probably reading this page because you've attempted to access some part of my blog (Wandering Thoughts) or CSpace , the wiki thing it's part of. Unfortunately you're using a browser version that my anti-crawler precautions consider suspicious, most often because it's too old (most often this applies to versions…
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The Architecture of Serverless Data Systems
I recently blogged about why I believe the future of cloud data services is large-scale and multi-tenant, citing, among others, S3. “ Top tier SaaS services like S3 are able to deliver amazing simplicity, reliability, durability, scalability, and low price because their technologies are s
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A Statistical Analysis of All Hacker News Submissions
After downloading all 1,265,114 Hacker News submissions from the official Hacker News API, I gathered a few interesting statistics which show the true impact of Hacker News.
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Principal Component Analysis for Dummies
(I recently wrote a new post that you may also find interesting called Principal Component Analysis 4 Philosophers) Having been in the social sciences for a couple of weeks it seems like a large am…
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Fruits (2020)
Fruits - Graph All The Things, a math blog by Martin Loncaric
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Data Structures in JavaScript
Freelance web developer, lover of JS and all new stuff #reactjs, #redux, #docker #machinelearning... Co-founder and CTO @AppBubbleBD, involved in @AllOverSequins, @recursecenter alumni
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The Little MongoDB Book available on GitHub
Karl Seguin's Blog - A mix of coding and creative writing
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Summing columns in remote Parquet files using DuckDB
vivym/midjourney-messages on Hugging Face is a large (~8GB) dataset consisting of 55,082,563 Midjourney images - each one with the prompt and a URL to the image hosted on Discord.
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A table that should exist in all projects with a database
Links to social profiles of Ioannis Cherouvim
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Exploring Databases Visually
Things you can do with a terminal emulator that renders images: generate contextual entity-relationship diagrams and navigate your data model from the inside!