[Opa] where to store client-side state

Owen Gunden ogunden at phauna.org
Tue Jan 31 18:04:02 UTC 2012

Ok, I think I get it. Going back to my original question; in the case
of onready="initmyclientcache(initval)", you will still have to store
the initval somewhere. I'm guessing you just store this at the
toplevel with an @client.

On Mon, Jan 30, 2012 at 8:43 AM, Rudy Sicard <rudy.sicard at mlstate.com> wrote:
> Hi,
> The cookie only stored the identity of the user, there is no data in it (it
> is traditional).
> => The state is not stored into the cookie but I guess you can easily use a
> client cache if speed is needed.
> For instance, you could have a state copy for get access, that can be
> invalidated by set access or which is refreshed if the state is too old.
> For now the served client code not client's id specific, so if you really
> want a minimal number of query,
> you should not ask the state on the js toplevel but you'd rather ask it on
> server side
> while construction the html page and pass it to the client environment using
> onready event.
> e.g.
> function_constructiong_html() =
> initval = UserContext.get( ... )
> ......
> <div onready={initmyclientcache(initval)}></div>
> On 29/01/2012 01:03, Owen Gunden wrote:
>> All the state is stored in a cookie? Interesting. That would be
>> different than how "traditional" frameworks do it, storing an index
>> into a server-side "session" table.
>> Nevertheless, if it's required to contact the server every time I
>> access the UserContext state (i.e. UserContext.execute), then what's
>> the point of making it client-side state?
>> I'm coming around to the idea that I'm overly paranoid about
>> performance, and just storing it as a toplevel binding (and serving it
>> in all of my pages) will be plenty fast. (thinking of all those sites
>> that import jquery, etc. on every page)
>> On Sat, Jan 28, 2012 at 4:33 PM, Adam Koprowski
>> <Adam.Koprowski at mlstate.com>  wrote:
>>>>>   Would UserContext work for you here?
>>>> I hadn't thought of that. But isn't that on the server?
>>>   All the manipulation functions are server-side (not sure why, in fact)
>>> but
>>> the state is on the client implemented with a cookie.
>>>   Best,
>>>   Adam
>>> --
>>> Adam Koprowski                [http://adam-koprowski.net]
>>> Opa Tech Evangelist @ MLstate [http://opalang.org | http://mlstate.com]
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