Jason Sobel has an interesting post, “Scaling Out” on Facebook’s BCP work and the move to being multi-colo.
Interesting to me was noting that:
- they just got around to this 8 months ago, and they’re fscking Facebook (which means you can wait)
- they’re still doing all writes to a single datacenter
- they’re hacking an object-level mark/sweep into the MySQL replication stream suggesting a certain parable of a hammer and nails.