Latency Numbers for System Design - Statistics

General Stats

Answer Stats

Hint	Answer	% Correct
Redis Read	100 ns	100%
RAM Access	100 ns	100%
L2 Cache Access	10 ns	100%
Packet travels from West Coast to Europe and back	100 ms	67%
HDD disk seek	10 ms	67%
RDBMS Database insert	1 ms	67%
L1 Cache Access	1 ns	67%
SSD Read	100 us	33%
Memcached sends data over 1 Gbps network	10 us	33%

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