/create?email=[email]&name=[name]: create a new user with an auto-generated id and email and name as passed values. /delete?id=[id]: delete the user with the passed id. /get-by-email?email=[email]: retrieve the id for the user with the passed email address. /update?id=[id]&email=[email]&name=[name]: update the email and the name for the user indentified by the passed id.