What’s in a URL?

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Designing a URL structure for a REST interface is harder than it might seem.

The complexity arises when you’re dealing with relationships.

/guest/123/note/  — is good for listing the notes for a specific guest.

but when you want to delete or update a note

/guest/123/note/456 — the guest id is redundant.

Also, creating a note

/guest/123/note  — means you’re splitting up the data, passing some of it through the URL and some through POST parameters.