Debugging application servers

Debugging handlers

As handler functions are simply Clojure functions that take a request hash-map, those functions can be called from unit tests or the REPL to test they are working correctly.

Ring mock

Generate mock requests and responses (?) for testing handler functions

Problematic Practices to avoid

Using (def name ,,,) expressions for debugging is very bad, especially if those expressions are left in production code.

(println ,,,) statements seem convenient however have very limited value. Using the REPL and REPL based debugging tools provide very useful output