Michał Gruchała - Data sharding

Data Sharding Michał Gruchała [email protected] WebClusters 2011 TODO ● Background ● Theory ● Practice ● Summary Background Microblogging site ● user messages (blog) ● cockpit/wall Classic architecture ● database ● web server(s) ● loadbalancer(s) Background Web servers, load balancers ● one server ● ... ● 1000 servers ● not a problem Database ● one database ● two databases (master -> slave) ● two databases (master master) ● n databases (slave(s)master->slave(s)) a lot of