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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>: <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>: Wed, 25 Mar 1998 21:53:19 -0700 (MST)</LI>
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<PRE>
On Tue, 24 Mar 1998, Adam Wiggins wrote:
> [Matt Chatterley:]
> > On Sat, 21 Mar 1998, Ben Greear wrote:
> > > The game will need to update it's persistant storage very often
> > > to make this feasible.
> > > I'm a little concerned about the performance hit on a DB, as I expect
> > > this game server to bring a machine to it's knees anyway...
> >
> > A point to remember: Have the game *constantly* saving *small* amounts of
> > data. Don't attempt to do what bases like PennMUSH do and dump a large
> > amount of data at a regular interval - this causes quite a few problems
> > (or rather, will if you are saving more than a few megabytes).
>
> I never got around to trying that idea that came up here (I can't remember
> who thought of it - maybe it was me) a while back, about having a parallel
> process running which did nothing but take a snapshot of the DB every n
> units of time and then dump them to disk in a leisurely manner.
> in-memory copy. In theory you could update it as often as every ten seconds.
>
> Naturally the only downside to this is that you essentially need double
> the RAM, but I see this as a pretty small concession, considering the price
> of memory these days.
The crucial part you are missing here, is how to do the snapshot? You
still have to pass (copy) the data, either through a pipe or socket
or something. It would probably be about as quick to just write it to
disk... Of course, I could be wrong...
Ben
>
> Adam
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="00917" HREF="msg00917.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>
<ul compact><li><em>From:</em> Orion Henry <orionZ#ix,netcom.com></li></ul>
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<LI><STRONG><A NAME="00889" HREF="msg00889.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></STRONG>
<UL><LI><EM>From:</EM> Adam Wiggins <nightfall#user2,inficad.com></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>
<LI><strong><A NAME="00829" HREF="msg00829.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Jon A. Lambert <a href="mailto:jlsysinc#ix,netcom.com">jlsysinc#ix,netcom.com</a>, Sun 22 Mar 1998, 21:08 GMT
</LI>
<LI><strong><A NAME="00858" HREF="msg00858.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>, Mon 23 Mar 1998, 20:43 GMT
</LI>
</ul>
<LI><strong><A NAME="00856" HREF="msg00856.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>, Mon 23 Mar 1998, 20:38 GMT
</LI>
<LI><strong><A NAME="00889" HREF="msg00889.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Adam Wiggins <a href="mailto:nightfall#user2,inficad.com">nightfall#user2,inficad.com</a>, Wed 25 Mar 1998, 07:18 GMT
<UL>
<LI><strong><A NAME="00901" HREF="msg00901.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>, Thu 26 Mar 1998, 04:54 GMT
<UL>
<LI><strong><A NAME="00917" HREF="msg00917.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Orion Henry <a href="mailto:orionZ#ix,netcom.com">orionZ#ix,netcom.com</a>, Tue 31 Mar 1998, 02:42 GMT
<UL>
<LI><strong><A NAME="00918" HREF="msg00918.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>, Tue 31 Mar 1998, 05:22 GMT
<UL>
<LI><strong><A NAME="00919" HREF="msg00919.html">Re: [MUD-Dev] World Persistence, flat files v/s DB v/s ??</A></strong>,
Nathan F Yospe <a href="mailto:yospe#hawaii,edu">yospe#hawaii,edu</a>, Tue 31 Mar 1998, 18:23 GMT
<UL>
<LI><strong><A NAME="00925" HREF="msg00925.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>, Wed 01 Apr 1998, 04:41 GMT
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