zOld Summary of March. 8 discussion

Marco, Justas, Diego, Stefano and Hassen discussed the possible CouchDB optimizations for the next ASO release after the overload of CouchDB last week:

• Provisioning of new machines (DiegoC. + StefanoB. will follow-up with the HTTP group)
  • New machine for CouchDB (big VM or PM), 1 small VM for ASO for the rotation and 1 small VM for the ASO app. in testbed
  • The request for a new machine for couchDB has been done since a while (6 months or so). DiegoG. is waiting news from IT. Diego G.: By 18th of March we should have the machine or at least a clear timeline.
• Split the views into several couch apps (DiegoC.)
• Clean-up old views (DiegoC.)
• Write the views in Erlang (DiegoC. + JustasB.)
  • DiegoC has already did some tests and he did not see particular gain of performance
  • JustasB pointed that the configuration should be tuned to see the gain
  • DiegoC and JustasB will follow-up further testing
• Fix the update API of WMCore to delete + put instead of post (HassenR.)
• Implement a backup solution for the publication in case of couchDB failure (MarcoM.)

Millestone: https://github.com/dmwm/AsyncStageout/milestones/ASO%20March%202016