Comment 9 for bug 1274614

Reviewed: https://review.openstack.org/76831
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=59ed8c081d5065046ee638ebfc74e4dab2ff0677
Submitter: Jenkins
Branch: master

commit 59ed8c081d5065046ee638ebfc74e4dab2ff0677
Author: demon.mhm <email address hidden>
Date: Thu Feb 27 15:38:21 2014 +0400

    Reduced database overhead from agents

     - added dedicated handler for node agents update only requests
     - caching data from agents to avoid db update with same data
     - nailgun responses with appropriate http statuses
     - changed agent update logic. Now it tries to update first and respects
       nailgun response statuses

    Change-Id: I2658cf7561cd8c9116acced2443d072d471f3bdb
    Implements: blueprint nailgun-agent-handler
    Closes-Bug: #1274614