System Design - Scale Flashcards by Katie D | Brainscape

Q

Facebook DAU

A

2 billion

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Q

Instagram DAU

A

500 million

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Q

Twitter mDAU

A

230 million

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Q

4 nines

A

8.64 s of downtime per day or 50 min per year

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Q

5 nines

A

864ms per day or 5 minutes per year

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Q

Gigabytes

A

10^9

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Q

Petabytes

A

10^15

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Q

Terabytes

A

10^12

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