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#capacity estimation

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Tagged #capacity estimation

GuideTechnology

15 min read

Estimating Storage, Bandwidth, Cache Size and Server Count

Turn request rates into the numbers that shape an architecture: storage per day and per year with replication and retention, ingress and egress bandwidth in Gbps, cache memory from the working set, database write limits, and a first server count with headroom and zone failure. Includes a full worked example and a calculator.

GuideTechnology

16 min read

Back-of-the-Envelope Estimation: From Users to Peak QPS

Capacity estimation from absolute basics: units and powers of two, seconds in a day, and the funnel from total users to MAU, DAU, requests per day, average QPS and peak QPS. Includes peak factors you can derive, read and write splits, fan-out, three worked examples and a small calculator.