Cache Crispies - Fast, Flexible Rails Serializer

You might decide to turn to Netflix's Fast JSON API, which is not a bad idea at all. But you'll have to conform to the JSON:API specification, which might be a major breaking change for your frontend and/or your API consumers. I know the frontend teams I worked with weren't too happy about the prospect of switching to JSON:API when I floated the idea to them. And for good reason! That sort of thing can be a lot of work for relatively little benefit. And if it's a hassle for your own team members, imagine your unhappy API-consuming customers.