Cached Copy - Cache Validator Skips the Body

The server compares the validator with the current resource row.

highlighted = computed this step

The server has a current resource row

The row pins the same path, the current tag, and the full body length.

\text{resource row checked}

If the resource changed, the body length would be 1280 bytes in this toy example.

\text{body bytes}=1280

The next chapter compares the client's validator with the current resource tag.

\text{compare tags next}

A validator only helps because the server has a current tag to compare with it.

\text{cached copy ready}