Fibonacci REST JSON API

1. GET /:n

An endpoint that returns the value from the Fibonacci sequence for a given number.

Params:

• :n (non negative integer) - the requested Nth Fibonacci number

Request: curl http://localhost:4001/6

Response: {"result": 8}

2. GET /list/:n?next_key=:k&size=:s

An endpoint that returns a list of numbers and the corresponding values from the Fibonacci sequence from 1 to N with support for pagination. Page size should be parameterized with a default of 100.

Params:

• :n (non negative integer) - the requested Nth Fibonacci number
• :k (non negative integer) - optional (default: 0) value of the next Nth number for pagination
• :s (non negative integer) - optional (default: 100) value of the number of results per one page

Request: curl http://localhost:4001/list/42?next_key=2&size=3

Response: {"result": [1, 2, 3], "next_key": 5}

3. PUT /blacklist/:n

An endpoint to blacklist a number to permanently stop it from being shown in Fibonacci results when requested. The blacklisted numbers should persist in application state.

• :n (non negative integer) - the Nth Fibonacci number

Request: curl PUT http://localhost:4001/blacklist/42

Response: 204 No Content

4. DELETE /blacklist/:n

An endpoint to remove a number from the blacklist.

• :n (non negative integer) - the Nth Fibonacci number

Request: curl DELETE http://localhost:4001/blacklist/42

Response: 204 No Content

To run tests, make sure elixir is installed and run

make tests