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http://lognormal.com/blog/2012/08/13/analysing-performance-data/
Mirror of the same bluesmoon / lognormal blog post on analysing performance data.
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http://www.speedawarenessmonth.com/analyzing-performance-data/
Blog post from bluesmoon / lognormal on how to analyse performance data. Includes some great points on geometric means and geometric standard deviation which better apply to lognormal distributions than arithmetic means / standard deviations. Very useful.
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http://blog.dustinkirkland.com/2010/06/ecryptfs-backup-strategy.html
One strategy to backup encrypted ecryptfs data as suggested by the author of ecryptfs. Useful and simple. Backup the metadata and the raw files with rsync.
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http://www.alditalk.de/
German mobile telco from Aldi. Offers great roaming data deals 7 days, 65mb for €5 anywhere in Europe.
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http://blog.dustinkirkland.com/2011/04/introducing-ecryptfs-recover-private.html
A critical utility for ecryptfs called ecryptfs-recover-private which automates and simplifies the process of recovering encrypted home directory data from Ubuntu.
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http://pastebin.com/yPyK193a
A different strategy to find an encrypted filename from an unencrypted filename under ecryptfs (Ubunut's encrypted home directory system).
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http://www.telmon.org/?p=631
Interesting article including a script that figures out a mapping from unencrypted filenames into ecryptfs encrypted filenames. Potentially useful.
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http://onlinestatbook.com/2/index.html
Useful online book on statistics. A work in progress, but looks very valuable.
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http://20bits.com/article/statistical-analysis-and-ab-testing
A good introduction to the statistics math of split testing.
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http://opencorporates.com/
A somewhat useful open database of company data worldwide. Supports crude search and returns data in json. Essentially Companies House data in the UK, so not ultra useful.
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http://abtester.com/calculator/
Includes the math behind the calculation, and sample PHP code to actually generate the numbers. Very cool.
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http://blog.asmartbear.com/easy-statistics-for-adwords-ab-testing-and-hamsters.html
Simple formula to calculate statistical significance at 95% on AB / split tests. N = total clicks, D = diff between win & lose, if D² > N, it's statistically significant. Example, 14 clicks A, 22 clicks B, N=36, D=22-14=8, 8²=64>36, win. If 2D²>N, 99%.
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http://square.github.com/cube/
Cube is an open-source system for visualizing time series data, built on MongoDB, Node and D3.
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http://mixpanel.com/
Web action analytics. Tracks events rather than pageviews, so users clicking "Like", etc. All data in real time, detailed analysis, retained >3yrs. Pricing is free up to 25k data points, $150 for 500k, and upwards. Interesting.
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http://newrelic.com/
A system to monitor multiple aspects of a live application in production including the page load times, server load times, mysql response times, javascript render times, and so on. Expensive.
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http://www.scalebase.com/
Another cloud based scale solution for MySQL, aims to simplify deploying MySQL "in the cloud".
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http://nimbusdb.com/how_it_works.html
Cloud based database that tries to achieve a new type of scalable, highly available, fault tolerant persistent data storage layer in "the cloud".
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http://www2.orange.co.uk/servlet/Satellite?pagename=OUKPersonal&c=OUKService&t=Service&cid=1096023564495&tab=2&mid=1137070320264
Orange UK GPRS costs for various talk plans.
