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http://serverfault.com/questions/399487/cant-connect-to-mysql-using-self-signed-ssl-certificate
This one question contains much of the necessary wisdom around mysql and SSL certificates. Incredibly helpful.
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http://www.howtoforge.com/how-to-set-up-mysql-database-replication-with-ssl-encryption-on-centos-5.4
Good introduction on setting up mysql replication with SSL encryption. Some of the options have changed in mysql 5.5 (no moremaster-connect-retry) and some settings are not applicable to Ubuntu, but the gist of it is useful.
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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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https://github.com/papertrail/remote_syslog/blob/master/examples/log_files.yml.example.advanced#L11
Examples of how to use remote_syslog for fancier stuff like excluding some lines from log files. 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://magebenchmark.sonassi.com/
A site that apparently compares the "speed" of magento hosting providers. Dubious without further research.
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https://github.com/mageplus/mageplus/wiki
A community owned and driven, enterprise fork of Magento Community Edition (1.7.0)
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http://leesbian.net/updating-magento-13x-to-php-53-compatibility
A short list of code changes required to make earlier Magento versions PHP 5.3 compatible. Very useful. Untested.
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http://www.gpmd.co.uk/blog/getting-and-scaling-magento-in-the-cloud/
An article on how to run magento in "the cloud". Includes a split admin / front end severs. Useful.
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http://www.magentocommerce.com/magento-connect/Magento+Core/extension/1359/magento-compiler
A plugin for magento that is meant to boost performance. Free.
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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://www.stevesouders.com/blog/2012/02/10/the-performance-golden-rule/
90% of time is in the front end. Top 10 sites = 74%, top 10k = 92%, top 50k = 87%.
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https://papertrailapp.com/
Logging aggregation, simple, cheap, effective, get it.
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http://info.iet.unipi.it/~luigi/dummynet/
Dummnet simulates different network bandwidth rates and latencies by introducing delays or chokes, works on *nix flavours.
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http://www.symantec.com/connect/articles/getting-hang-iops
Outstanding article on hard disk performance, IOPS and predicting drive usage, RAID capacity, and so on.
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http://www.gidnetwork.com/tools/gzip-test.php
Very handy tool that will tell you if gzip or deflate is enabled on a url or not.
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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://www.maatkit.org/doc/mk-heartbeat.html
Simple script to monitor mysql replication delay. It updates a value on the master every second and checks how far behind the value is on the slave. Simple yet effective.
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http://www.elevatedcode.com/articles/2007/12/05/replication-monitoring-with-monit/
Clever approach to monitoring mysql replication with monit. Ruby script checks replication is running and then touches a file, monit in turn monitors that file's timestamp and if it gets out of date, sends an alert. Sort of like a dead man switch. Clever.
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http://www.strangeloopnetworks.com/
In a similar vein to cloudflare / yottaa, strangeloop offer a performance enhancement service through a physical / cloud based appliance. It uses the standard techniques, js/css combining, sprites, cdn, tailoring to the browser, and so on. No pricing. :-(
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http://www.yottaa.com/
Similar to CloudFlare but more expensive ($30/mth no ssl, $130/mth with ssl) it accelerates web sites through the use of CDN, js/css combining, etc.
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https://www.cloudflare.com/
loudFlare is an automated CDN / content acceleration type service. It acts as a reverse proxy providing some sort of heuristic security scanning, logging of traffic, and an automatically configured CDN. $15 + $5/site/month.
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https://support.mozilla.org/en-US/questions/786035#answer-142961
How to get an SSL client certificate into Firefox on Android. Copy cert9.db and key4.db from phone's SD card Androiddataorg.mozilla.firefoxfilesmozillaprofile.default to dir. Then `pk12util -i file.p12 -d sql:dir`
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http://it.toolbox.com/blogs/securitymonkey/howto-securing-a-website-with-client-ssl-certificates-11500
A wonderful article on how to setup Client SSL authentication. Includes all the openssl commands and apache config variables.
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https://unixbhaskar.wordpress.com/2010/11/12/measure-website-response-time-through-curl/
Handy article on how to get the response times out of curl. The key is the --write-out / -w option.
