[jdoliner]

This isn't really a CAP theorem problem and it's certainly not right to describe Docker as "AP infrastructure." What would that mean exactly? Would you expect this problem to go away if I used a database that sacrificed consistency for availability such as Riak?

[zamalek]

Swarm (not the whole of Docker) seems like something designed for databases like Riak, yes. A SQL failover cluster might work, but certainly not a single database container on infrastructure designed for highly available apps.