python - How to implementing a graph for REST API -

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i'm trying create effective course planner engineering school @ college , need implement graph of of courses offered , different ways navigate through them graduation. i've implemented tsp type problem in c, wondering technologies best used implement in production web app. specifically, i'm wondering best setup on end, includes:

  1. rest api interface front end
  2. workers of computationally intensive operations on graph
  3. the graph imagine best implemented type of db
  4. web crawler retrieves up-to-date list of courses , attributes , inserts entries graph

my proposed config consist of django api, python scripts workers, adjacency list in postgres db graph, , daemonized python script web crawler using scrapy library (mostly keep in few different technologies possible).

are there obvious flaws in design? example, better write worker (#2) in c speed things or not worth time? more importantly, there other commonly used methods implementing graphs service this?


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