We are planning 3 hours of maintenance on the 28th of January from 09:00 until 12:00 CET (that’s 3 AM to 6 AM EST) to migrate our database to a larger server.
We’ve recently deployed a few new backend features including full contact history, similarity calculations and contact massaging. These features combined gave our systems quite a bit of extra load. We have been optimizing our code a lot but still require more database capacity. If you want specifics you can pester @tmacedo for them.
UPDATE (11:54): All systems back online, nice performance increase so far!