[sldev] [ANN] certified http development

[Donovan Linden]

I like the ZODB a lot, and there is also Divmod Axiom, which is  
glyph's 3rd or 4th object database for Python, and I think this one  
is pretty solid. It's based on embedding SQLite. However, the  
information here which requires persistence is so simple that a real  
object database would be way overkill.

I think (rdw correct me if I am wrong) the current plan is just to  
use mysql to store whatever needs to be stored for a Long Time.  
However, this may be overkill in my mind as well.

I think the simplest possible solution is just to have the HTTP  
server write requests as it reads them to a logfile along with the  
responses after they are written. (It probably couldn't store the  
body, because that could be of arbitrary size.) If the server  
crashes, it will read in the logfile, build the appropriate "I've  
already done that" structures based on what it sees, and then delete  
the logfile, creating a new one to record all the traffic it  
successfully handles. But I haven't been the one who has been  
thinking through the implementation details, so this might not work.

Donovan

On Sep 19, 2007, at 1:44 AM, Tao Takashi wrote:

> Hi!
>
>
> 2007/9/19, Ryan Williams (Which) <rdw at lindenlab.com>:
> You may have noticed that Certified HTTP was listed as one of the
> components of SL Grid 2008.  Well, we're starting to build it.  :-)
>
>
> Hey, a start! :-)
>
> I encourage everyone interested to take a look at the documents and
> code, flesh them out, poke holes in the logic, etc.  This thing is  
> going
> to be awesome and totally sweet, and I'm looking forward to working on
> it with you all.
>
>
> You really should make this an open source developmen and inform  
> the Python community :-)
>
> I quickly looked at the code and wondered, if maybe the ZODB might  
> be of help
> for the persistance part. Not sure if it adds to much overhead though.
> But it would be a finished object storage with transactions and  
> also the
> possibility to work distributed (e.g. one storage and many clients).
> Somebody in the Zope community is also implementing some RAID-like  
> solution
> for it.
> (the ZODB is part of Zope but can also be used and is available  
> standalone).
>
> http://wiki.zope.org/ZODB/FrontPage
>
> Oh, and you maybe want to start directly with an egg-like structure  
> for the project
> so you can easily create an egg out of it and e.g. upload it to the  
> cheeseshop.
>
> And I hope to see Linden Lab at the next EuroPython :-)
>
> -- Tao
>
>
> -- 
> taotakashi at gmail.com
> http://taotakashi.wordpress.com
> http://worldofsl.com
>
> RL: Christian Scholz, cs at comlounge.net
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>
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