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SQLite Release 3.8.11.1
A complete list of SQLite releases in a single page and a chronology are both also available. A detailed history of every check-in is available at SQLite version control site .
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 199 posts.
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Announcing MongoDB 3.0
Official MongoDB Documentation. Learn to store data in flexible documents, create an Atlas deployment, and use our tools and integrations.
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Data Infrastructure at IFTTT
Get more from the services you love on IFTTT. Explore the latest tips and tricks, browse by category, or search by name.
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The Universal Data Structure
Whether you write compilers, web services or Django admin panels, you probably use hash maps more than all other data structures combined. In fact, you may not remember the last time you used anything else. This is not a coincidence: any conceivable data structure can be implemented with a hash map; therefore, there…
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Reasons to love SQLAlchemy
I've seen some bashing of ORMs of late, which I think is totally undeserved. I'm a big fan of SQLAlchemy ; I use it in most of my projects, and have contributed code to the library. I'm going to explain 10 good reasons you should love SQLAlchemy too! In fairness, there are a number of good ORMs around, and most of…
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Why Are Geospatial Databases So Hard to Build?
In 2005, I decided to design my first geospatial database engine. PostGIS was unable to keep up with the modest volumes of sensor data I was working with and while I was new to geospatial data, I had skill designing database engines. It seemed simple enough to get the scale and performance I required. Nothing could…
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What interests Reddit? A network analysis of 84M comments by 200K users
Reddit.com is a popular social media and news aggregation site. Here I analyze over 80 million comments by 200K redditors to discover what topics interest them.
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Apache Kafka, Samza, and the Unix Philosophy of Distributed Data
Confluent is building the foundational platform for data in motion so any organization can innovate and win in a digital-first world.
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Federal Reserve Bank of NY converts major economic model to Julia
Marco Del Negro, Marc Giannoni, Pearl Li, Erica Moszkowski, and Micah Smith We have implemented the FRBNY DSGE model in a free and open-source language called Julia. The code is posted here on GitHub, a public repository hosting service. This effort is the result of a collaboration between New York Fed staff and folks…
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Lucene: The Good Parts
Before MongoDB, before Cassandra, before “NoSQL”, there was Lucene. Did you know that Doug Cutting wrote the first versions of …
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Lower Cost S3 Storage Option and Glacier Price Reduction
Like all AWS services, the Amazon S3 team is always listening to customers in order to better understand their needs. After studying a lot of feedback and doing some analysis on access patterns over time, the team saw an opportunity to provide a new storage option that would be well-suited to data that is accessed […]
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Migrating bajillions of database records at Stripe
There are roughly ten thousand bajillion (to the nearest bajillion) merchants registered with Stripe. We recently finished a Very Big Migration of Large Amounts Of Data between several database tables for every single one of them, without losing any of it, without any downtime, mis-reads or mis-writes, whilst running…
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Google’s S2, geometry on the sphere, cells and Hilbert curve
Update - 05 Dec 2017: Google just announced that it will be commited to the development of a new released version of the S2 library, amazing news, repository can be found here. Google's S2 library is a real treasure, not only due to its capabilities for spatial indexing but also because it is a library that
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Modern SQL: With – Organize Complex Queries
The WITH clause adds named subqueries to SQL queries. WITH is also known as Common Table Expression (CTE).
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Pgsql: Create an infrastructure for parallel computation in PostgreSQL
Create an infrastructure for parallel computation in PostgreSQL. This does four basic things. First, it provides convenience routines to coordinate …
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Apache Kafka 0.9 is released
Major milestone release Apache Kafka 4.0 removes ZooKeeper entirely, provides early access to Queues for Kafka, and enables faster rebalances, in addition to many other new KIPs.
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Bayesian ranking of items with up and downvotes or 5 star ratings
Evan Miller wrote a great article How Not To Sort By Average Rating . He shows that simple formulas like score = upvotes - downvotes or score = upvotes / (upvotes + downvotes) don’t work. He proposes to use the lower bound of the Wilson score confidence interval. The formula is complicated and somewhat of a hack…
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