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https://www.appfog.com/
PaaS offering for a wide range of platforms, free up to 8 servers, 2G of ram, 100M database. Supports, PHP, Node.js and more.
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https://www.nodejitsu.com/
PaaS offering for Node.js. Based on units called "drones". Starts at $3/month for a single drone, free for open source projects.
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http://copperegg.com/
Yet another monitoring app. Copper Egg combines real user monitoring, generic metric logging, server monitoring and maybe other stuff(?) into one application. Pricing starts at $19/month. Not unreasonable.
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http://www.lowendbox.com/
Really useful site with some outrageously cheap VPS deals. Very useful, well organised, no search / filters, but offers expire I guess, so reading a few pages is ok.
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http://lightningbase.com/
Hosted WordPress service which includes an affiliate program that pays 20% for the lifetime of the account, plans start from $10/month.
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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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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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https://wiki.ubuntu.com/UncomplicatedFirewall
Very simple guide to using ufw to create firewall rules. `ufw allow ssh/tcp && ufw allow http/tcp && ufw allow https/tcp && ufw enable && ufw status` done. :-)
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http://engineering.gomiso.com/2011/01/04/easy-monitoring-of-varnish-with-munin/
Very useful walkthrough on setting up munin to monitor Varnish. Explains how to install and configure munin, which is very simple and very valuable.
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https://beeznest.wordpress.com/2011/04/18/memcached-to-store-php-sessions/
Excellent article describing in depth how to have PHP store session data in memcached and the differences between the memcache and memcached implementations in PHP. Very useful.
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http://developer.yahoo.com/performance/rules.html
YSlow rules for optimising web performance from the Yahoo Developer Network. 34 rules that make sites faster. Very useful reading.
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http://blog.cfelde.com/2011/05/performance-rackspace-cloud-vs-amazon-web-services/
Interesting article comparing Rackspace and AWS performance when applying high frequency trading strategies against 10 years of archive data. Rackspace io kicks ass, CPU slightly ahead.
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http://www.eucalyptus.com/
On premises cloud computing platform, with an open source angle. Don't fully understand it.
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http://www.rightscale.com/
A platform to manage cloud computing resources, deployments, and so on. Essentially a simplified front end for AWS as far as I can make out.
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http://cloudcontrol.com/
Scalable PHP PaaS service. Based on the concept of "boxes", which handle 2 simultaneous requests each, and can scale up and down dynamically. So 12 concurrent requests equals 6 boxes. Strange, but potentially cost effective for traffic peaks.
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http://orchestra.io/
PHP PaaS provider based in Ireland, acquired by Engine Yard.
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http://apphosted.com/
Simplified python hosting in "the cloud".
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https://phpfog.com/
PHP cloud hosting. Very slick architecture. Custom managed EC2 nodes deployed behind varnish caches and nginx load balancers. Fairly reasonably priced.
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http://www.heroku.com/
Ruby, Node.js and Clojure application hosting. Pricing is based on web and background workers. One node free.
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http://kencochrane.net/blog/2011/06/django-hosting-roundup-who-wins/
Article mentioning a selection of django hosting providers that provide "managed hosting". Very useful, some great companies.
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http://www.askthepony.com/blog/2011/07/setup-a-complete-django-server-deploy-rollback-%E2%80%93-all-in-one-powerful-script/
A script to set up and deploy django servers. Hat tip rob.
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http://kencochrane.net/blog/2011/06/django-gunicorn-nginx-supervisord-fabric-centos55/
Useful article on how to deploy django apps on nginx. Handy.
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http://www.resellerclub.com/
Domain and hosting reseller program. Starts from $100 signup and prices drop as the total lifetime spending on the account increases. Interesting model, competitive pricing. Ability to resell.
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http://www.bytemark.co.uk/index
UK based hosting provider, includes a managed hosting offering. Hat tip Steve Kemp, he works for them.
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https://www.nearlyfreespeech.net/
Pretty interesting hosting service that's pay as you go, where you pay only for what you use. Pricing starts near 1c per day. They also believe strongly in freedom of speech.