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Estimations of storage, latency and availability

Storage

1 byte = sequence of 8 bits

An ASCII character uses one byte of memory (8 bits)

Power of two
Power of two

Latency

Latency numbers every programmer should know
Latency numbers every programmer should know
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Availability

Availability numbers
Availability numbers

Example

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Advice

  • Rounding and Approximation of numbers
  • Write down your assumptions as a reference later
  • Label your units. Ex: 5KB
  • Common estimations: QPS, peak QPS, storage, cache, number of servers
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