HTTP Routing Table

/ | /(?P[a-z0-9]+) | /(user) | /posts | /users

	/
	GET /
	/(?P[a-z0-9]+)
	GET /(?P<user>[a-z0-9]+)
	GET /(?P<user>[a-z0-9]+)/posts/(?P<post_id>[\d+]+)
	/(user)
	GET /(user)
	GET /(user)/posts/(int:post_id)
	GET /(user)/posts/(post_id:int)
	/posts
	GET /posts/(int:post_id)
	POST /posts/(int:post_id)
	/users
	GET /users/(int:user_id)/posts/(tag)