One Annotation per HTTP Verb

A REST controller method needs Spring to know two things about the request it should answer: which HTTP verb, and which path. @GetMapping("/rides/{id}") says both in one line.

All four are specialisations of the more general @RequestMapping, which takes the verb as an argument instead of baking it into the annotation's name — the specific ones exist so the verb is visible at a glance, without reading into the parentheses.