- In controllers: all reference to map config are now camelized, for instance: mapconfig -> mapConfig or mapconfigProvider -> mapConfigProvider
- In controllers: all map config providers created in req/res cycle are saved into `res.locals` and `mapConfigProvider` as key.
- In map-config-providers: all of them implement `.getAffectedTables()`, in order to calculate the tables involved for a given map-config. For that, `pgConnection` and `affectedTablesCache` are injected as constructor argument.
- Named Map Provider: rename references from `affectedTablesAndLastUpdate` to `affectedTables`.
- Named Map Provider Cache: In order to create new named map providers, needs affectedTablesCache.
- Extract locals middlewares (surrogate-key and cache-channel) from controllers and create an unified version of them.
- Extract last-modified middleware from named maps controller (draft).
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