Big Interfaces

What I like:

• I only have to pass one DatabaseClient to all my HTTP handlers to provide them with access to all services.
• I can use service mocks in my handler tests instead of using a real database.

What I don't like:

• Too big interfaces in package whatever:
  • UserService has basic CRUD methods plus lots getters etc.
  • DatabaseClient has database related methods plus getters for all services.

Setup:

$ git clone <insert URL here>
$ cd <insert dir here>
$ cd cmd/web
$ go run main.go
$ open http://localhost:8080/users/123