I think we're still trying to learn all the different use cases in which Crystal may be an awesome match, but I'm not that sure that's something you can plan - I feel it's a bit ecosystem-driven.
One awesome use case for Crystal that isn't that explored yet is all the command line tools made in Ruby (I'm thinking about fastlane, CocoaPods, Vagrant, Chef, you-name-it) that don't have to do with Ruby code. There's a great boost in performance if you run a command and you don't have to load the whole interpreter + parse + interpret live for a shortly-lived process - that, if you run it again, will go through the same overhead once again.
IoT and embedded systems are things we have on radar, but we still haven't found how that will play with the fact of being a GCed language, for example.
But you can toy with it as Faustino here says, and let us know how the language could fit your use cases better!
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I think we're still trying to learn all the different use cases in which Crystal may be an awesome match, but I'm not that sure that's something you can plan - I feel it's a bit ecosystem-driven.
One awesome use case for Crystal that isn't that explored yet is all the command line tools made in Ruby (I'm thinking about fastlane, CocoaPods, Vagrant, Chef, you-name-it) that don't have to do with Ruby code. There's a great boost in performance if you run a command and you don't have to load the whole interpreter + parse + interpret live for a shortly-lived process - that, if you run it again, will go through the same overhead once again.
IoT and embedded systems are things we have on radar, but we still haven't found how that will play with the fact of being a GCed language, for example.
But you can toy with it as Faustino here says, and let us know how the language could fit your use cases better!