D5639: Internal cache for provider data on initialisation

[Dan Leinir Turthra Jensen]

leinir created this revision.
Restricted Application added a project: Frameworks.
Restricted Application added a subscriber: Frameworks.

REVISION SUMMARY
  This is a two layer approach to creating less network traffic when initialising a KNSCore::Engine:
  
  - Firstly, cache the xml documents themselves
  - Secondly, share XML fetch jobs when many are created at the same time for the same URL
  
  The result of this patch in a single fetch per provider url per application launch, and in connection with https://phabricator.kde.org/D5638 we will fetch the data from the network only once, until the cache is invalidated, all in all resulting in much less traffic and less hammering of the servers.
  
  CCBUG: 379193

TEST PLAN
  Using Discover, this results in much less network traffic during startup and engine initialisations.

REPOSITORY
  R304 KNewStuff

REVISION DETAIL
  https://phabricator.kde.org/D5639

AFFECTED FILES
  src/core/engine.cpp

To: leinir, whiting, apol
Cc: #frameworks
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kde.org/pipermail/kde-frameworks-devel/attachments/20170428/986793dc/attachment.html>