Updating /seen from concurrent sessions

[Lawrence Greenfield]

   Date: Fri, 15 Nov 2002 15:44:45 +1100
   From: Andrew McNamara <andrewm at object-craft.com.au>
[...]
   BTW, have you looked at Andrew Tridgell's Trivial Database? It uses mmaped
   files and spin-locks to achieve good write performance, although I don't
   think resilience in the face of crashes was a high priority. However the
   architecture-dependent spin lock code may be handy if you ever decide
   to follow this route.

I glanced at it last night. It doesn't offer any crash resistance so
it isn't particularly useful, though it does seem like an interesting
piece of software.

Larry