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<H1>Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</H1>
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<LI><em>To</em>: mud-dev <<A HREF="mailto:mud-dev#null,net">mud-dev#null,net</A>></LI>
<LI><em>Subject</em>: Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</LI>
<LI><em>From</em>: Ben Greear <<A HREF="mailto:greear#cyberhighway,net">greear#cyberhighway,net</A>></LI>
<LI><em>Date</em>: Sun, 22 Mar 1998 13:04:38 -0700 (MST)</LI>
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<PRE>
On Sun, 22 Mar 1998, Joel Dillon wrote:
>
> > The game will need to update it's persistant storage very often
> > to make this feasible.
>
> How often is very often? Wouldn't a backup and save to disk every
> half-hour or so be ok?
I might go with something like that. I would like to update more often,
but it will probably induce quite a bit of lag (several seconds at
least..)
>
> > In my current game, I use ascii based flat files. I don't think
> > this will work so well for the space game.
>
> Well, it depends on what sort of machine spec you have, but I'd
> have thought ASCII flat files wouldn't be a big problem as long as
> you load all the data into memory when the server starts up
It's writing, not reading that will kill me. It will definately be held
entirely in memory, but I need a persistant image to reboot from. The
other thing is, if I can get it to crash very rarely (less than weekly
at least) then just saving an image every hour or so might be workable..)
> What's wrong with that? Threads aren't too expensive. Unless you're
> anticipating literally thousands of simultaneous players you should be
> fine.
I'll have to see on that. Also, there is usually a 256 limit on
file descriptors (sockets). Does java automatically mux/demux to get
around that, or do you have to write it yourself? It wouldn't
be too hard, but it will need to be dealt with...
>
> Jo
Ben Greear (greear#cyberhighway,net) <A HREF="http://www.primenet.com/~greear">http://www.primenet.com/~greear</A>
Author of ScryMUD: mud.primenet.com 4444
<A HREF="http://www.primenet.com/~greear/ScryMUD/scry.html">http://www.primenet.com/~greear/ScryMUD/scry.html</A>
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<LI><STRONG><A NAME="00811" HREF="msg00811.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></STRONG>
<UL><LI><EM>From:</EM> Joel Dillon <emily#cornholio,new.ox.ac.uk></LI></UL></LI>
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><STRONG>Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</STRONG>, <EM>(continued)</EM>
<ul compact>
<ul compact>
<ul compact>
<ul compact>
<ul compact>
<LI><strong><A NAME="00871" HREF="msg00871.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Joel Dillon <a href="mailto:emily#cornholio,new.ox.ac.uk">emily#cornholio,new.ox.ac.uk</a>, Tue 24 Mar 1998, 08:14 GMT
</LI>
<LI><strong><A NAME="00893" HREF="msg00893.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Matt Chatterley <a href="mailto:matt#mpc,dyn.ml.org">matt#mpc,dyn.ml.org</a>, Wed 25 Mar 1998, 08:40 GMT
</LI>
</ul>
<LI><strong><A NAME="00881" HREF="msg00881.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Vadim Tkachenko <a href="mailto:vt#freehold,crocodile.org">vt#freehold,crocodile.org</a>, Wed 25 Mar 1998, 04:53 GMT
<UL>
<LI><strong><A NAME="00924" HREF="msg00924.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Wed 01 Apr 1998, 00:49 GMT
</LI>
</UL>
</LI>
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<LI><strong><A NAME="00827" HREF="msg00827.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Ben Greear <a href="mailto:greear#cyberhighway,net">greear#cyberhighway,net</a>, Sun 22 Mar 1998, 20:05 GMT
</LI>
</ul>
<LI><strong><A NAME="00812" HREF="msg00812.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Matt Chatterley <a href="mailto:matt#mpc,dyn.ml.org">matt#mpc,dyn.ml.org</a>, Sun 22 Mar 1998, 12:44 GMT
<UL>
<LI><strong><A NAME="00814" HREF="msg00814.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Joel Dillon <a href="mailto:emily#cornholio,new.ox.ac.uk">emily#cornholio,new.ox.ac.uk</a>, Sun 22 Mar 1998, 12:50 GMT
<UL>
<LI><strong><A NAME="00815" HREF="msg00815.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Matt Chatterley <a href="mailto:matt#mpc,dyn.ml.org">matt#mpc,dyn.ml.org</a>, Sun 22 Mar 1998, 13:40 GMT
<UL>
<LI><strong><A NAME="00816" HREF="msg00816.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Joel Dillon <a href="mailto:emily#cornholio,new.ox.ac.uk">emily#cornholio,new.ox.ac.uk</a>, Sun 22 Mar 1998, 13:55 GMT
</LI>
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