Basically, we had three types of data: 1) everything associated with the SERPs, 2) most things associated with payments, and 3) everything else.
Category three was relational, IIRC like ~2TB. We originally stored it all on a custom MySQL cluster, and we started running into pretty bad replication lag. Amazon came around with Arora and promised we'd never have any replication lag. We switched over. Still had replication lag.
Category three was relational, IIRC like ~2TB. We originally stored it all on a custom MySQL cluster, and we started running into pretty bad replication lag. Amazon came around with Arora and promised we'd never have any replication lag. We switched over. Still had replication lag.