Use HTTP Methods

This guideline might sound stupid, but too many times you stumble upon REST APIs which for example do delete operation with parameters /?deleteID=xxx
Use HTTPS methods such instead:
  • GET for fetching data.
  • POST for adding data.
  • PUT for updating data (as a whole object).
  • PATCH for updating data (with partial information for the object).
  • DELETE for deleting data.
I would like to add that I think PATCH is great way to cut down the size of requests to change parts of bigger objects, but also that it fits well with commonly implemented auto-submit/auto-save fields.