[DISCUSS] API Throttling minimum number of calls per unit of time

[Parth Jagirdar <Pa...@citrix.com>]

Fixing

[DISCUSS} 

TAG to make it compatible with your filters 

Thanks,
.. Parth

-----Original Message-----
From: Parth Jagirdar [mailto:Parth.Jagirdar@citrix.com] 
Sent: Friday, March 01, 2013 2:35 PM
To: cloudstack-dev@incubator.apache.org (cloudstack-dev@incubator.apache.org)
Subject: [DISCUSS} API Throttling minimum number of calls per unit of time

All,

API throttling number can be set to anything at this point.

Suggestions here is to have this number set to a value that is "greater than" number of API that can be fired by any potential action on UI.

Minimum API for throttling that can be set  <  Number of API's Any action can fire in unit time.
(unit time is 1 second)


That said say action X fires 10 API in 2 seconds than having 10 as min number is safe. Or even 8 if we have decent idea of intervals  they get fired at..
But for action Y that fires 20 in 2 seconds with 15 in first seconds than 15 as min number is required to avoid undesirable effects


Real life example,

Login as user (not admin; throttling doesn't apply to Admin) fires about 8 in total. (in less than a second which is the unit we are using in API throttling)

Now if this number is set to anything less than this will have unpleasant effect on UI.

Including unwanted error (HTML 429) and partial UI screen rendering.


So to hardcode numbers or just document and leave on admins to exercise cautions or ...  .. Please provide your suggestions /inputs.

Track it here:  https://issues.apache.org/jira/browse/CLOUDSTACK-1483


Thanks,
...Parth