Design Google Maps, Calender, Big Table, File System, Spanner

http://massivetechinterview.blogspot.in/2015/10/google-file-system.html
http://massivetechinterview.blogspot.in/2015/10/google-map-architecture.html
http://massivetechinterview.blogspot.in/2015/10/google-calendar-architecture.html
http://massivetechinterview.blogspot.in/2015/10/google-bigtable-architecture.html
http://massivetechinterview.blogspot.in/2015/10/google-spanner-architecture.html