[Haskell-cafe] Re: pure Haskell database

[Achim Schneider]

Anton van Straaten <anton at appsolutions.com> wrote:

> Achim Schneider wrote:
> > "Rich Neswold" <rich.neswold at gmail.com> wrote:
> > 
> >> On Thu, Sep 25, 2008 at 11:09 AM, Manlio Perillo
> >> <manlio_perillo at libero.it>wrote:
> ...
> >>> But this works only if the database is used by only one process.
> >>>
> >> Ah. When you said "concurrent safe", I thought you meant within the
> >> application. You're looking for something like
> >> this<http://hackage.haskell.org/cgi-bin/hackage-scripts/package/anydbm>
> >> .
> >>
> > Or even HApps-State (http://happs.org/) for moar 0v3rk1ll, of which
> > you can never ever have enough.
> 
> HAppS-State doesn't currently solve the problem of the database being 
> used by more than one process (does it?)  In the current stable
> version, it basically maintains its data in-memory and keeps a
> checkpointed transaction log.
> 
After watching the BayFP presentation I assumed that they've got
cross-master synchronising going, and that's nearly a year old news
now. Merely synchronising processes is trivial if you can do that.

If the HAppS documentation wasn't as lacking as it is or I'd have more
time, I would know more about this.

-- 
(c) this sig last receiving data processing entity. Inspect headers
for copyright history. All rights reserved. Copying, hiring, renting,
performance and/or broadcasting of this signature prohibited.