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<H1>Re: [MUD-Dev] Persistant storage.... My current idea.</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] Persistant storage.... My current idea.</LI>
<LI><em>From</em>: "Jon A. Lambert" <<A HREF="mailto:jlsysinc#ix,netcom.com">jlsysinc#ix,netcom.com</A>></LI>
<LI><em>Date</em>: Sun, 29 Mar 1998 01:27:38 -5</LI>
<LI><em>Reply-to</em>: <A HREF="mailto:jlsysinc#ix,netcom.com">jlsysinc#ix,netcom.com</A></LI>
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<PRE>
On 28 Mar 98 at 21:53, Ben Greear wrote:
> *********************
>
> I'm currently planning on using one file, with certain blocks
> allocated within it for objects. It will basically be a linked
> list represented as a file.
>
> I'll have headers that point the the seek position of the next and
> previous element in the file. It will also keep track of the used and
> total space allocated for that element.
>
> If I need to update, and it's too big, it will be moved to the end
> of the file, and the previous element will get it's space. (I'll deal
> with boundary cases, sufice it to say.)
>
> Now, this reeks of inneficiency when trying to look up an object based on
> some key (object number in my case, probably 8 bytes ).
>
> However, I'm going to create a hash table at boot time to link an object
> id with the seek position of that object in the file. I believe this
> should give me as quick access as I can expect.
>
> *************************
Why not put your headers (pointers to the seek pos)
into a separate file, an index file.
Then you'd be very similar to an xDBM or ISAM. :)
> Some other things: I'll have objects unique across the universe, even
> different servers. (Each server will be assigned an ID, and each object
> within that server will have a unique ID. So, given both ID's, I can
> guarantee uniqueness.)
>
Very much like COOL..
struct ObjID {
short serverid;
int objectid;
}
--
--/*\ Jon A. Lambert - TychoMUD Internet:jlsysinc#ix,netcom.com /*\--
--/*\ Mud Server Developer's Page <<A HREF="http://www.netcom.com/~jlsysinc">http://www.netcom.com/~jlsysinc</A>> /*\--
--/*\ "Everything that deceives may be said to enchant" - Plato /*\--
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<li><strong><A NAME="00915" HREF="msg00915.html">Re: [MUD-Dev] Persistant storage.... My current idea.</A></strong>
<ul compact><li><em>From:</em> Ben Greear <greear#cyberhighway,net></li></ul>
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<UL><LI><EM>From:</EM> Ben Greear <greear#cyberhighway,net></LI></UL></LI>
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<ul><li>Thread context:
<BLOCKQUOTE><UL>
<LI><strong><A NAME="00921" HREF="msg00921.html">Re: [MUD-Dev]: smoothing</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Tue 31 Mar 1998, 23:59 GMT
<UL>
<li><Possible follow-up(s)><br>
<LI><strong><A NAME="00922" HREF="msg00922.html">Re: [MUD-Dev]: smoothing</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Wed 01 Apr 1998, 00:04 GMT
</LI>
</UL>
</LI>
<LI><strong><A NAME="00916" HREF="msg00916.html">UML & CORBA</A></strong>,
Greg Munt <a href="mailto:greg#uni-corn,demon.co.uk">greg#uni-corn,demon.co.uk</a>, Mon 30 Mar 1998, 21:53 GMT
<LI><strong><A NAME="00913" HREF="msg00913.html">Persistant storage.... My current idea.</A></strong>,
Ben Greear <a href="mailto:greear#cyberhighway,net">greear#cyberhighway,net</a>, Sun 29 Mar 1998, 05:34 GMT
<UL>
<LI><strong><A NAME="00914" HREF="msg00914.html">Re: [MUD-Dev] Persistant storage.... My current idea.</A></strong>,
Jon A. Lambert <a href="mailto:jlsysinc#ix,netcom.com">jlsysinc#ix,netcom.com</a>, Sun 29 Mar 1998, 06:24 GMT
<UL>
<LI><strong><A NAME="00915" HREF="msg00915.html">Re: [MUD-Dev] Persistant storage.... My current idea.</A></strong>,
Ben Greear <a href="mailto:greear#cyberhighway,net">greear#cyberhighway,net</a>, Mon 30 Mar 1998, 04:41 GMT
</LI>
</UL>
</LI>
</UL>
</LI>
<LI><strong><A NAME="00912" HREF="msg00912.html">Re: (rec.games.mud.admin) Roleplaying (fwd)</A></strong>,
Nathan F Yospe <a href="mailto:yospe#hawaii,edu">yospe#hawaii,edu</a>, Fri 27 Mar 1998, 20:37 GMT
<LI><strong><A NAME="00911" HREF="msg00911.html">META: New Mail server and ISP</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Fri 27 Mar 1998, 18:23 GMT
<LI><strong><A NAME="00910" HREF="msg00910.html">Predicting future motion intelligently</A></strong>,
J C Lawrence <a href="mailto:claw#under,engr.sgi.com">claw#under,engr.sgi.com</a>, Thu 26 Mar 1998, 23:04 GMT
</UL></BLOCKQUOTE>
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