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NoSQL Databases: A Survey and Decision Guidance
(At the bottom of this page, you find a BibTeX reference to cite this article.)
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The latest blog posts to take off on Hacker News. 4,224 posts.
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Ingesting MySQL data at scale – Part 1
Building the platform where people around the world come to search, save and shop
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Mapping the World of Music Using Machine Learning: Part 1
In June 2016 Ravi Mody and Tim Schmeier gave a presentation at the NYC Machine Learning meetup to discuss their work on the data science…
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IPv6 Support for Amazon S3
Update October 1, 2021 – This post has been edited to remove outdated S3 buckets. As you probably know, every server and device that is connected to the Internet must have a unique IP address. Way back in 1981, RFC 791 (“Internet Protocol”) defined an IP address as a 32-bit entity, with three distinct network […]
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Extracting city blocks from OpenStreetMap data
Extracting blocks within a city as GeoJSON polygons from OpenStreetMap data
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Image Completion with Deep Learning in TensorFlow
Content-aware fill is a powerful tool designers and photographers use to fill in unwanted or missing parts of images. Image completion and inpainting are closely related technologies used to fill in missing or corrupted parts of images. There are many ways to do content-aware fill, image completion, and inpainting. In…
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How to Become a Data Scientist, Part 2
This is Part Two in a three-part series examining how to become a data scientist. Supported by extensive research and expert opinions, it aims to provide a comprehensive guide to anyone looking to move into this field, irrespective of background and experience. The topic of Part Two is: "Learning".
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How to become a data scientist
This is Part One in a three-part series examining how to become a data scientist. Supported by extensive research and expert opinions, it aims to provide a comprehensive guide to anyone looking to move into this field, irrespective of background and experience. The topic of Part One is: "What is Data Science?".
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Uber's Move Away from PostgreSQL
Last week, a blog post by an Uber engineer explained why Uber chose to move from PostgreSQL to MySQL . This article was widely reported and...
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Hard Drive Stats for Q2 2016
We take a close look at the hard drive failure rates from 68,813 hard drives that are used in the Backblaze data center.
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Why we lost Uber as a user
On 07/26/2016 01:53 PM, Josh Berkus wrote: > The write amplification issue, and its correllary in VACUUM, certainly > continues …
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On Uber’s Choice of Databases
Uber provides bad advice about PostreSQL vs. MySQL
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Log Structured Merge Trees
A detailed look at the interesting LSM file organisation seen in BigTable, Cassandra and most recently MongoDB.
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Introduction to Zipline: A Trading Library for Python
This blogpost introduces zipline package in python with its benefits, how to install it, and using it code the moving crossover strategy for financial trade
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Generalized linear models, abridged
Generalized linear models (GLMs) are indispensable tools in the data science toolbox. They are applicable to many real-world problems involving continuous, yes/no, count and survival data (and more). The models themselves are intuitive and can be used for inference and prediction. A few very high quality free and open…
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Sculpture of Housing Prices Ripping San Francisco Apart
This data sculpture depicts a map of housing prices in San Francisco. It's a map of the city, torn at the seams. The height of each area represents the average price per square foot for recent home sales. Where neighboring areas are close in value they are connected, but if neighboring areas are too far
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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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Unstructured Datatypes in Postgres – Hstore vs. JSON vs. JSONB
All about when to use unstructured data types in Postgres, such as Hstore, JSON, and JSONB. The tl;dr is that the right data type depends on your use case. Here we dig deep into the benefits, and why JSONB became so popular since it first got real and proper support in Postgres 9.4. The B in JSONB stands for better.
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Jepsen: MongoDB
Previously in Jepsen , we discussed Redis . In this post, we’ll see MongoDB drop a phenomenal amount of data. See also: followup analyses of 2.6.7 and 3.4.0-rc3 .
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Billions of Messages a Day – Yelp's Real-Time Data Pipeline
Billions of Messages a Day - Yelp's Real-time Data Pipeline Justin C., Software Engineer Jul 14, 2016 This post is part of a series covering Yelp's real-time streaming data infrastructure....