[Meta] Exercise Overview about learnapollo

[marktani]

All exercises should be broken down into small high level steps ("build a pokemon card component") to reach the result of the exercise. Each implementation (React/RN/Angular/...) should break these steps further down into low level steps ("we will use React Router to realize routes").

Each exercise should contribute to at least one topic in #1 (with exceptions).

For the actual exercise chapter on the website, both the high level and low level steps should be conveyed.

[tychota]

@marktani : for me this is not necessary to start with !

This can be cover in step 03.

While Apollo can do basic caching based on the shape of GraphQL queries and their results, Apollo won’t be able to associate objects fetched by different queries without additional information about the identities of the objects returned from the server.

[marktani]

Yea that's right. I moved it down to 04, because the pokemon preview card will use a different query than the overview component in step 04. Before that, we only have one query for pokemons so there is no need for this data normalization step.

[marktani]

I just added Data normalization using dataIdFromObject to the first exercise: http://dev.apollodata.com/react/cache-updates.html#dataIdFromObject

This is needed for consistent data.

[marktani]

I added Data Caching as a topic we should talk about in #1. I think we can briefly mention that things are cached in exercise 02 and once we cover data normalization we could expand on this topic.

[marktani]

I'm thinking about moving the updatePokemon mutation to 05, while having deletePokemon and createPokemon in 06.

The reasoning is that automatic refresh can be accomplished by just using dataIdFromObject and including the changed fields in the mutation results for updatePokemon. For createPokemon and deletePokemon we have to additionally use updateQueries or reducer to accomplish the same.

Additionally, I think that showing the optimistic UI feature only works with updateMutation, so I'd move that to 05 as well.

Edit: I'm going with what we have for now and see how that works out 🙂

[marktani]

Closing this. For more discussion add a comment or new issue.