[keycloak-user] Supporting sticky sessions

[Bill Burke]

There's a minimum of 4 Http Requests.  There is about 6 SQL queries to 
load a user.  So, if there is 2 nodes, you have minimum 12 queries for 
an uncached user. It really all depends how big the cache can be.  
Couldn't a million users be cached on a pretty inexpensive box?  My 
laptop has 32 gig ram.  10K per user is 10 gigs for a million users.

Then, depending on UserSession ownership setting, you have 
pulling/grabbing/replication of the client sessions as you hop between 
nodes.  This is the one that can't be fixed.  I don't know how much of a 
big deal it is.

On 3/4/2016 10:18 AM, Stian Thorgersen wrote:
> Users are cached so that helps + it's possible to load balance based 
> on source address. Do you really think that a lot of people will run 
> that many nodes in either case?
>
> On 4 March 2016 at 14:52, Bill Burke <bburke at redhat.com 
> <mailto:bburke at redhat.com>> wrote:
>
>     I"m not sure how well keycloak would scale without this.
>
>
>     On 3/4/2016 7:15 AM, Stian Thorgersen wrote:
>>     Eventually it would be nice to support the ability for load
>>     balancers to send all requests for a particular user session to
>>     the same node (browser as well as client requests).
>>
>>     More details here: https://issues.jboss.org/browse/KEYCLOAK-2352
>>
>>     Is this a high priority for 1.9 or should it be 2.x? We may be
>>     able to put it into 1.9.2 if required.
>>
>>     I'd like feedback on how useful folks think it would be as well
>>     as feedback on the proposed implementation.
>>
>>
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>
>     -- 
>     Bill Burke
>     JBoss, a division of Red Hat
>     http://bill.burkecentral.com
>
>
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>

-- 
Bill Burke
JBoss, a division of Red Hat
http://bill.burkecentral.com

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