How does Google Gmail store their "email" messages?
How does Google store their 7GB/user emails such开发者_运维知识库 that it is blazing fast for retrieval and also not subject to corruption.
Is it in those NoSQL database or just jornaling file system ?
According to the paper "The Learning Behind Gmail Priority Inbox", Google makes "extensive use of bigtable, which combines features of a distributed file system with a database."
BigTable has been described in a 2006 OSDI paper.
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