Monday, February 26, 2018

Practicalities and trade-offs in programming with GADTs

At issuu, we use OCaml to process reader-behavior events from web browsers and mobile apps, digesting these into high-level reports for business analysts. We process around 5,000 events per second on average. On a daily basis, this amounts to roughly 200 GB of uncompressed JSON data.

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How can you work with a JSON value if you know nothing about it?

I have talked about the difficulty of typing certain JSON values coming from some APIs. The JSON is just very complicated. When I do that,...