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The most popular blog posts about databases & data on Hacker News. 141 posts.
"So, how much experience do you have with Big Data and Hadoop?" they asked me. I told them that I use Hadoop all the time, but rarely for jobs larger than a few TB. I'm basically a big data neophite - I know the concepts, I've written code, but never at scale.
London, 1772. I have been asked by my superiors to give a brief demonstration of the surprising effectiveness of even the simplest techniques of the new-fangled Social Networke Analysis in the pursuit of those who would seek to undermine the liberty enjoyed by His Majesty’s subjects. This is in connection with the…
The PostgreSQL Global Development Group announces the release of PostgreSQL 9.3, the latest version of the world's leading open source …
I've recently completed a project to compile publicly-available NFL play-by-play data. It took a while, but now it's ready. The resulting ...
It has recently been brought to our attention that the MySQL man pages have been relicensed. The change was made rather silently going from MySQL 5.5.30 to MySQL 5.5.31. This affects all pages in the man/ directory of the source code. You can tell the changes have come during this short timeframe (5.5.30->5.5.31). The…
Blog article by Jeroen Janssens. Sep 19, 2013. 21 min read. Data science is OSEMN (pronounced as awesome). That is, it involves Obtaining, Scrubbing, Exploring, Modelling, and iNterpreting data. As a data scientist, I spend quite a bit of time on the command-line, especially when there’s data to be obtained, scrubbed…
At more than 8 billion page views per month and 45k requests per second, we’ve learned a couple things about delivering comments at scale.
I returned back home from PGCon.EU-2013 conference, Dublin, Ireland, where we gave two talks - Next Generation of GIN and Binary storage for nested data structures and application to hstore data type . These projects as well as visiting the conference (I, Teodor Sigaev and Alexander Korotkov) were…
We here on the Mozilla Services team are happy to announce our first beta release (v0.2b1) of Heka, a tool for high performance data gathering, ...
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An analysis and infographic of 10,000 porn stars and adult films, revealing what the average adult performer looks like and does on film.
Our reports examine national and regional trends in mobile and broadband network experience, and develop in-depth insights into trends impacting consumer network experience.
Cassandra is a Dynamo system; like Riak, it divides a hash ring into a several chunks, and keeps N replicas of each chunk on different nodes. It uses tunable quorums, hinted handoff, and active anti-entropy to keep replicas up to date. Unlike the Dynamo paper and some of its peers, Cassandra eschews vector clocks in…
The PostgreSQL Global Development Group has released a security update to all current versions of the PostgreSQL database system, including …
Beginning with this release, SQLite will not compile on Windows version prior to Windows Vista (circa 2007), due to a switch to using Slim Reader/Writer Locks (SRWLs) which are faster but which are not available on WindowsXP and earlier.
Logstash is an open source data collection engine with real-time pipelining capabilities. Logstash can dynamically unify data from disparate sources and...
A beginner's guide to getting started with web scraping using Python and BeautifulSoup.
We are very please to announce that new crawl data is now available! The data was collected in 2013, contains approximately 2 billion web pages and is 102TB in size (uncompressed).
While at Waza this year, I had a chance to talk to my friend Guillaume Roques. In addition to talking about SalesForce, we took advantage of our mutual .NET backgrounds to discuss Microsoft. We did the typically uncompromising praise of The Gu and how far Azure has come along in the last 18 months… and of course we…
