5 ms·
I'm really curious how they implemented this. They say "data is replicated synchronously to multiple data centers." Synchronously MySQL replication over a WAN i
by antoncohen 15y ago
I'm really curious how they implemented this. They say "data is replicated synchronously to multiple data centers." Synchronously MySQL replication over a WAN is pretty impressive. As others have said, this post doesn't mention scalability.
- ww520 15y agoThere are disk device level replication like DRBD that mirrors disks synchronously across network. It's a generic solution for any disk mirroring. MySQL just sits on top of it. Google probably got some super fast cross datacenter links to allow fast replication. Still the latency will be worse than local mirroring for synchronously replication.
- nl 15y agoI believe they (Google) has a MySQL backend implemented on BigTable. (I don't think that is officially announced but it was mentioned - somewhat accidentally - at a public Google event.)