Hi!

[Joel N. Weber II]

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   When I searched for keyserver solutions I haven't found 
   anything useful. (GPL, descentralized, stable, etc...)

I'm not all that familiar with what keyserver software is out there,
and I think there are several people on this list who have an interest
in writing keyserver software, so hopefully they'll be able to answer
your question better than I can.

   2) Why not use a P2P infrastructure? Why not make the client ask the other 
   servers how many space they have (query), so the client can send the key to 
   the server with more space?(compared to the others... load balancing...)

The key database is apparently small enough that it's possible to
store a complete copy of it on every server.  This makes things work
better when someone is requesting a key, since it will already be on
the server that's being queried.

   4) Backup server? Why not a global system where all inserted keys are logged 
   at one server. This server will just receive from hundreds of keyservers the 
   key additions(small traffic). When one server looses all it's information 
   (very rare), it just retrieves the logs using ftp and remounts the database 
   from the log.

The current system has a lot more redundancy than that.  There are
several different organizations running keyservers that all exchange
data, and all have the complete key database.



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