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…
18 DECEMBER 2014: The PostgreSQL Global Development Group announces the release of PostgreSQL 9.4, the latest version of the world's …
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…
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I was pleasantly surprised when somebody shared my traveling salesman animation to reddit and the post made it all the way to reddit’s default front page (i.e. the top 25). The gif racked up over 1.3 …
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Great news: PostgreSQL introduced jsonb support, which is real data type with binary storage and indexing ! This work is a confluence of two projects - our hstore and json, which were existed in PostgreSQL for years in somewhat incomplete forms - hstore (10 years old!) implements key-value storage…
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.
At Backblaze we now have 34,881 drives and store over 100 petabytes of data. We continually track how our disk drives are doing, which ones are reliable, and which ones need to be replaced.
Another great post
While dealing with big genetic data sets I often got stuck with limitation of programming languages in terms of reading big files. Also so...
In addition to talking about PostgreSQL at LSF/MM and Collab , I also learned a few things about the Linux kernel that I had not known befor...
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…
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 …
I had summarized/discussed a couple papers ( Haystack , Memcache caching ) about Facebook's architecture before. Facebook uses simple arch...
NB: These techniques are universal, but for syntax we chose Postgres. Thanks to the inimitable pgAdminIII for the Explain graphics. So useful, yet so slow
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…
This post walks through a conversion funnel analysis that wouldn’t be possible in PostgreSQL 9.2
About a week ago, Randall Munroe published Frequency , the 1331st entry in his xkcd webcomic series. Unlike most xkcd comics, it's animated — actually, 5-by-10 grid of animated GIFs. Each describes a scenario (e.g., "one birth," or "someone locks their keys in their care") and blinks at the scenario's purported…
