Question

How facebook handles 300petabytes of daily data?

Answer 1

Facebook has very large storage systems in every country. Data is stored in these databases

Answer 2

Facebook offered some insight into how it handles the more than 300 petabytes of data it stores for its 1.19 billion monthly active users, providing some details on Presto, an interactive query system it created and is open-sourcing, in a note on the Facebook Engineering page

Presto was designed to help Facebook process queries for data with lower latency — in other words, quicker from an end-user standpoint — and a “small team” in the social network’s data infrastructure group (Martin Traverso, Dain Sundstrom, David Phillips, Eric Hwang, Nileema Shingte, and Ravi Murthy) launched the project in the fall of 2012.

The interactive query system is now open-sourced, and developers can access the code and other information via the Presto site or GitHub.

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