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RethinkDB 1.6 is out: regex matching, new array operations, random sampling
This release includes regex string matching, fourteen new array operations, support for random sampling, error handling improvements, support for authentication keys, and over 65 bug fixes, features, and enhancements.
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Call me maybe: Redis redux
In a recent blog post , antirez detailed a new operation in Redis: WAIT . WAIT is proposed as an enhancement to Redis’ replication protocol to reduce the window of data loss in replicated Redis systems; clients can block awaiting acknowledgement of a write to a given number of nodes (or time out if the given threshold…
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Wolfram Alpha’s New Data about Pokémon
It's not all math & science at Wolfram. Today's pop topic: Pokémon! Catch their abilities, stats, icons, curves, creators, games, movies—even X & Y.
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More on Postgres Performance
If you missed my previous post on Understanding Postgres Performance its a great starting point. On this particular post I’m going to dig in to some real life examples of optimizing queries and indexes. It all starts with stats I wrote about some of the great new features in Postgres 9.2 in the recent announcement on…
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Wikipedia Adopts MariaDB
This past Wednesday marked a milestone in the evolution of Wikimedia’s Database infrastructure: the completion of the migration of the English and German Wikipedias, as well as Wikidata, to M…
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How I work with Postgres – psql, My PostgreSQL Admin
On at least a weekly basis and not uncommonly multiple times in a single week I get this question: @neilmiddleton I’ve been hunting for a nice PG interface that works within other things. PGAdmin kinda works, except the SQL editor is a piece of shit Sometimes it leans more to, what is the Sequel Pro equivilant for…
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Principal Component Analysis for Dummies
(I recently wrote a new post that you may also find interesting called Principal Component Analysis 4 Philosophers) Having been in the social sciences for a couple of weeks it seems like a large am…
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The Bw-Tree: A B-tree for New Hardware
Explore research at Microsoft, a site featuring the impact of research along with publications, products, downloads, and research careers.
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Introducing Riak 2.0: Data Types, Strong Consistency, Full-Text Search
The Technical Preview of Riak 2.0 is now available for download.
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Call me maybe: final thoughts
Previously in Jepsen , we discussed Riak . Now we’ll review and integrate our findings.
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How to make fake data look meaningful
If you are trying to trick somebody with your data, never share the raw data; only share the conclusions. Bonus points if you can’t share the data because it is somehow priviledged or a trade secret. The last thing you want is to allow other people to evaluate your analysis and possibly challenge your conclusions.
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Julia, I love you (2012)
Julia is a new language for scientific computing that is winning praise from a slew of very smart people, including Harlan Harris, Chris Fonnesbeck, Douglas Bates, Vince Buffalo and Shane Conway. As a language, it has lofty design goals, which, if attained, will make it noticeably superior to Matlab, R and Python for…
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Non-blocking transactional atomicity
tl;dr: You can perform non-blocking multi-object atomic reads and writes across arbitrary data partitions via some simple multi-versioning and by storing metadata regarding related items.
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The trouble with timestamps
Some folks have asked whether Cassandra or Riak in last-write-wins mode are monotonically consistent, or whether they can guarantee read-your-writes, and so on. This is a fascinating question, and leads to all sorts of interesting properties about clocks and causality.
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Riak CS is Now Open Source
Riak's cloud storage software is now open source.
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