From: Dmitri Colebatch <dim@...>
Date: 2003-01-21T11:21:45+09:00
Subject: Re: persistence (was: IE blatantly defiant of HTML standards)

the hard thing is then indexes.... I've created my own little custom 
wrapper on PStore that basically loads everything in memeory - but then 
I have to do my own searches - I basically loop over the collection... 
not good...

in time I see that I can create indexes on the things I know I need to 
search on, and not keep the whole thing in memory - also speed up 
searching considerably...

shouldn't be too hard on the scale I'm talking...

of course the real problem if you have an existing database is data 
migration... show me a dba who will let you move their 2 gig schema into 
something the open source community has built...

my 2c
dim

Tom Sawyer wrote:
> On Monday 20 January 2003 04:58 am, Anders Bengtsson wrote:
> 
>>I'd recommend looking at Prevayler, it's a very easy
>>solution to most persistence problems.
>>There is a Ruby port, Mnemonic, but you can write your
>>own Prevayler port in a few hours if you need to.
>>
>>http://www.prevayler.org/
> 
> 
> Prevayler is a very interesting idea, but it isn't a full purpose solution. i 
> would love to be able to use something like this but i have tables that are 
> multiple hundreds of megabytes each. i'd run out of memory pretty quick.
> 
> but it did get me thinking that it would be neat is Ruby could cache its 
> ObjectSpace to disk, or more exactly, if it could track object usage and 
> cache the objects with oldest/least use. then Ruby in and of itself could be 
> persistent, and work as a general purpose soultion.
> 
> thought?
> 
> -transami
> 
> 
>