Database sessions are also discussed in the main book section on 
sessions<http://web2py.com/books/default/chapter/29/04/the-core#session>, 
along with the cookie based session option (which can also be helpful for 
high availability).

Anthony

On Thursday, October 3, 2013 4:55:24 AM UTC-4, Niphlod wrote:
>
> why doesn't anyone search the book before asking ??? :-P
>
>
> http://web2py.com/books/default/chapter/29/13/deployment-recipes#Efficiency-and-scalability
>
> Il giorno mercoledì 2 ottobre 2013 15:45:21 UTC+2, damona ha scritto:
>>
>> Any thoughts on this for clustering and High Availability?
>>
>> Could a feature be added to web2py to store session information in the 
>> DB, so using sticky session is optional, or if a server goes down it can 
>> get the session information.
>>
>> e.g.
>>
>> Proxy with stick session too server A and B
>> Web2py on servers A and B store session information in DB when it changes.
>> Server B goes down, everyone ones requests goes to server A
>> Server A is sent a session which it does no know about, it looks it up in 
>> the DB.
>> Users never knows that server B went down.
>>
>> You could also as part of the session record a modification date, and if 
>> it does not match what web2py has recorded locally it then looks it in the 
>> DB as well.   This would also allow you not to have sticky sessions.
>>
>> Cheers.
>>  PS I would have thought GAE would have to store session information in 
>> Datastore/MySQL already?
>>
>

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