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New
The latest blog posts to take off on Hacker News. 4,224 posts.
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Stream and Go: News feeds for 300M users, built on RocksDB and Raft
Discover the tech stack used by Stream. Explore 42 tools across 5 categories.
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Datomic Cloud
Announcing Datomic Cloud: a fully AWS-integrated database, up and running from the Marketplace in minutes, delivering the complete Datomic information model.
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Pick strong consistency whenever possible
Do you like complex application logic? We don’t either. One of the things we’ve learned here at Google is that application code is simpler and development schedules are shorter when developers can rely on underlying data stores to handle complex transaction processing and keeping data ordered. To quote the original…
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Full-Text Search in Django with PostgreSQL
Article based on my talk about Full-text search in Django with PostgreSQL.
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The State of Vacuum in Postgres
In a recent blog post , I talked about why every system that implements MVCC needs some scheme for removing old row versions, and how VACUUM...
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Docker for data scientists: Introduction and use cases
Data scientists looking to learn Docker can get a brief intro and a look at how to improve your workflow
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SQL Keys in Depth
The internet is full of dogmatic commandments for choosing and using keys in relational databases. At times it verges on a holy war: should you use natural or artificial keys? Auto-incrementing integers, UUIDs?
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PostgreSQL Benchmark on FreeBSD, CentOS, Ubuntu Debian and OpenSUSE
In this post, I’m going to show benchmark results of the recently released PostgreSQL 10.1. I’ve benchmarked the DB on these OSes (all are 64-bit):
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Jsonb: Stories about performance
As such, there’s really no “standard” benchmark that will inform you about the best technology to use for your application. Only your requirements, your data, and your infrastructure can tell you what you need to know.
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Four DB2 Code Bases?
Many years ago I worked on IBM DB2 and so I occasionally get the question, “how the heck could you folks possibly have four relational database management system code bases?” Some go on to argue that a single code base would have been much more efficient. That’s certainly true. And, had we moved to a single code base…
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Land Registry data reveals London’s secret tunnels
This post is by Guy Shrubsole. Updated 16th Dec 2017 with post-script on Birmingham’s secret tunnels. The existence of a secret network of Cold War-era tunnels beneath central London can be …
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Artwork Personalization at Netflix
Artwork is the first instance of personalizing not just what we recommend but also how we recommend.
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Modes, Medians and Means: A Unifying Perspective
Introduction / Warning Link to heading Any traditional introductory statistics course will teach students the definitions of modes, medians and means. But, because introductory courses can’t assume that students have much mathematical maturity, the close relationship between these three summary statistics can’t be…
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The Ethereum-blockchain size will not exceed 1TB anytime soon
Once a month users post a chart on `r/ethereum` predicting the blockchain size of Ethereum will soon exceed 1 TB. I want to clean up with some stories around the Ethereum-blockchain size in this article and try to explain why this chart is technically correct, but not the full picture...
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What the SATs Taught Us about Finding the Perfect Fit
On the Stitch Fix Algorithms team, we’ve always been in awe of what professional stylists are able to do, especially when it comes to knowing a customer’s si...
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Three-Valued Logic
Making decision despite missing SQL data (NULL): How to avoid OR…IS NULL in the WHERE clause.
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IBM scientists demonstrate 10x faster large-scale machine learning using GPUs
The IBM Research blog is the home for stories told by the researchers, scientists, and engineers inventing What’s Next in science and technology.
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Introduction to R Programming
This is a detailed step-by-step introduction to R programming. Starting with the two major reasons to learn R for Data Science, it will guide you through the installation process, and prepare you for the basics of R: arithmetics, variables assignment, data types, functions, and documentations.
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How we saved money by replacing Mixpanel with BigQuery and K8S
Insights, guides, and product updates from Cloud Intelligence™.
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Serverless Aurora
Learn what Serverless Aurora is, what it means for serverless developers, and why we think it's the future of data. Solving the serverless data layer.
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Detailed Financial Histories Exposed for Thousands
111 GB of internal customer information from National Credit Federation was left exposed in a publicly downloadable data repository. This is its story.
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