Most interesting links of September ’13

Recommended Readings Stuff The Internet Says On Scalability For September 13, 2013 – a collection of interesting performance related articles with summaries (via @_dagi) Can you copy a culture? The NUMMI story (audio/transcript) – how the GM factory with the worst workforce has been turned around via a good application of Toyota Production System –

Webapp Blue-Green Deployment Without Breaking Sessions/With Fallback With HAProxy

Use case: Deploy a new version of a webapp so that all new users are sent to the new version while users with open sessions continue using the previous version (so that they don’t loose their precious session state). Users of the new version can explicitely ask for the previous version in the case that

Test Puppet config of an existing node using Puppet Master via Vagrant

Are you using Puppet in the client-server setup and want to test the configuration for a particular node without actually changing it? You can do that by fooling Puppet Master into believing that a Vagrant virtual machine (VM) is that node and applying it there. The process is simple: you essentially only need to get