What is a Capacity Unit (CU)?

Brief planning reference

F2 and F4 name two and four nominal capacity units. This is a compute-size comparison, not a promise that a particular query runs twice as fast. Retain the same input data, query, and observation window when testing a change.

Check it in practice

Write the expected behavior, preserve a representative input, and compare the result against source evidence. Include a failed or incomplete case. These are illustrative review steps, not measured performance claims.

Continue to the full worked guide. This short entry remains available at its original address and is not promoted as a standalone search tutorial.