Rack-based reusable building blocks for running REST-style APIs over HTTP.
API endpoints are constructed like lego blocks by connecting a minimalist Core instance with a Storage object and assembling other middleware for security, validation, search/indexing, logging, transformation, etc.
TODO Cache-Control: max-age=86400 var=col geojsson linestri col https://stackoverflow.com/questions/5851727/leverage-browser-caching-expires-or-max-age-last-modified-or-etag
facet.format = legacy facet.format = object facet.format = ...?