Not really relevant, but using Go to fetch the data, and then Ruby to process the data is the best. I used this exact set up for a project and it was amazing. Really the sweet spot of use cases for both languages.
Go's got an awesome feature set built in to the language for building small networked services. I implemented a client to a cryptocurrency network to extract information about its status and clients. I can't really express why it's so good, it just feels right.
Same for Ruby, the syntax is perfectly suited for transforming, digging through and acting upon data. I didn't even add a Gemfile, only used standard library functions, transforming the data the Go program mined into usable information serialized in JSON which was subsequently used as a static database for a webpage.