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David Binger wrote:
>>  While you are packing a database, access to objects are blocked.
>
> Packing is incremental now, so there isn't any interruption of
> service during a pack.

So you store new transactions at the end of the "current" file while you
are copying to the "new" one?.

> I'm all for it.  Storage is relatively simple, too, so I bet this will be
> pretty easy for you,  since you are already tuned up on BerkeleyDB.

The cycles are the issue. Thinking about that.

>> Also, I plan to export in my LAN a "generic" persistence storage system
>> based in Durus, for things like "Linda" blackboard coordination. The
>> idea is to provide a persistence system in a "blackbox" in the LAN,
>> useable for any client
>
> Generic in what sense?
> Blackbox in what sense?
> Do you mean you'd just use a few primitive Persistent classes, so the
> clients would not have to be updated?

Suppose a machine with plenty of HD, possibly replicated/HA. That
"blackbox" simply export a DURUS socket. Any client can connect to the
socket and read/write data, arbitrary. Think about a NFS server, serving
"persistence" instead files.

> Both of these ideas seem valuable and achievable.  Please
> keep us updated.

I would started coding yesterday if I would be able to solve in a fine
way (puff :-) the cycle issue.

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