Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 28 posts.
Algorithms are a fascinating use case for visualization. To visualize an algorithm, we don’t merely fit data to a chart; there is no primary dataset. Instead there are logical rules that describe behavior. This may be why algorithm visualizations are so unusual, as designers experiment with novel forms to better…
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 .
This post covers Elasticsearch 1.1.0. In the months since its publication, Elasticsearch has added a comprehensive overview of correctness issues and their progress towards fixing some of these bugs.
Pagination without OFFSET has many benefits but one problem: there is no tool support. Please help changing this.
Randy Olson charts out the percentage of Bachelor's degrees conferred to women (by major) and makes some startling findings.
I had an opportunity to meet Ted Neward at TechEd this year. Ted, among other things, famously coined the phrase “Object-Relational mapping is the Vietnam of our industy” in late 2004. It’s a scary analogy, but an apt one. I’ve seen developers struggle for years with the
Packages that need to read cdb files should incorporate the necessary portions of the cdb library rather than relying on an external cdb library.
In the previous post, we discovered the potential for data loss in RabbitMQ clusters . In this oft-requested installation of the Jepsen series, we’ll look at etcd : a new contender in the CP coordination service arena. We’ll also discuss Consul ’s findings with Jepsen.
Randy Olson charts out the IQ of students by their major's gender ratio and reveals a startling trend.
All signs seem to indicate that Apple will finally ship IndexedDB in Safari 7.1 sometime this year. This means that Safari, the last holdout against IndexedDB,…
ASCII delimited text solves the problems exporting and importing structured text files and is part of the design of the character set. Unfortunately a lot of people and systems use CSV and other pr…
We get asked a lot for statistics on the YC portfolio. Even though some of these aren’t that helpful [1], here is the latest update on the numbers we get asked about the most. As always, all the credit goes to the founders. Total market cap of all YC companies: >$30 billion Total money raised by all YC companies: >$3…
We are pleased to announce today the initial release of Transit. Transit is a format and set of libraries for conveying values between applications written i...
For most data scientists, a toolkit like scipy/matplotlib or R becomes so familiar that it becomes almost an extension of their own mind. When fleshing out an idea, we will just open up ipython, write a few lines of code, and display the plot on the screen to get …
An overview of what I've been doing as part of my internship at Spotify in NYC this summer: using convolutional neural networks for audio-based music recommendation.
RabbitMQ is a distributed message queue, and is probably the most popular open-source implementation of the AMQP messaging protocol. It supports a wealth of durability, routing, and fanout strategies, and combines excellent documentation with well-designed protocol extensions. I’d like to set all these wonderful…
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.
We launched the Amazon Relational Database Service (Amazon RDS) service way back in 2009 to help you to set up, operate, and scale a MySQL database in the cloud. Since that time, we have added a multitude of options to RDS including extensive console support, three additional database engines ( Oracle, SQL Server, and…
tl;dr: I have created a test suite for comparing the transaction isolation levels in different databases. I did this as background research for my book . This post explains why.
Let’s talk about the stream. The SoundCloud stream represents stuff that’s relevant to you primarily via your social graph, arranged in time order, newest-first. The atom of that data model, an event, is a simple enough thing. Timestamp User who did the thing Identifier of the thing that was done For example, At…
