[Seaside] Re: [squeak-dev] Upgrading running servers?
avi at dabbledb.com
Thu Apr 3 19:38:46 UTC 2008
On Thu, Apr 3, 2008 at 12:00 PM, Stephen Pair <stephen at pairhome.net> wrote:
> If I understand what DabbleDB does, they essentially give each user their
> own squeak process to run in. When a session is first established, they
> start up a new image. Upgrading would be a matter of dropping a new image
> somewhere and as old sessions expire and new ones created, users are
> migrated over to the new code. With hydraVM, a scheme like that might be
> doable with just a small bit of session management in the main image.
That's more or less right, yes. I've used variations on that strategy
before - in general, having multiple images going where old sessions
go to the old image but new sessions get routed to the new image makes
for very smooth upgrades.
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