Launchpad minimizes downtime using 9.1 replication

Canonical staff member Robert Collins has a nice blog about how Launchpad reduced downtimes for agile schema deployment from an hour down to 5 seconds.  They did this over the last couple months by moving from Slony to Slony+pgBouncer and then to pgBouncer+Binary Replication.  This is what we make nice tools for; to make our users' lives easier.