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Zotonic's Variation

This is a fork of Basho's Webmachine. This fork is done for supporting content management systems with large amounts of dispatch rules and many virtual hosts.

Differences with Basho Webmachine

The main differences with Basho's Webmachine are:

  • Pluggable dispatch handler
  • Support for the HTTP Upgrade
  • Caching of resource callbacks results
  • Dispatch handler can redirect requests
  • Use of process dictionary has been removed
  • webmachine_request is now a normal (non parametrized) module
  • Resources are renamed to controllers.
  • webmachine_controller (ie. webmachine_resource) is now a non-parametrized module
  • Extra logging, also in the event of crashes
  • Use of os:timestamp() instead of now() to prevent locking and time shifts

The first couple of changes gave a significant speed boost to Webmachine.

In the specific case of Zotonic the difference was 5 milliseconds (or more) per request (on a 2GHz Core 2 Duo). Without these optimizations we were not able to use Webmachine.