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Thanks for sharing compumike! Very cool!! If you don’t mind me asking, why did you choose the Crystal programming language for this project?

• compumike 4y ago
  Crystal https://crystal-lang.org/ https://crystal-lang.org/ is beautiful, highly performant, concise, powerful, well documented. It has a solid standard library and plenty of "shards" (packages) too. It's really the elegance of writing it that I appreciate the most -- perhaps even more than I get that elegant feeling from Ruby. The code for the standard library is highly readable and well documented, which is awesome. In working on this project, I discovered two "superpowers" of Crystal: The first was macros https://crystal-lang.org/reference/1.5/syntax_and_semantics/macros/index.html https://crystal-lang.org/reference/1.5/syntax_and_semantics/... which I used sparingly, but to great effect, when an ordinary method call wouldn't do. The second was monkeypatching: specifically, it's super easy to reopen existing standard library classes and add a field I need, for example: # BEGIN MONKEYPATCH class HTTP::Server::Context property response_body_cache_key : String? = nil end # END MONKEYPATCH This adds a new field the standard library HTTP::Server::Context https://github.com/crystal-lang/crystal/blob/1.5.0/src/http/server/context.cr https://github.com/crystal-lang/crystal/blob/1.5.0/src/http/... / https://crystal-lang.org/api/1.5.0/HTTP/Server/Context.html https://crystal-lang.org/api/1.5.0/HTTP/Server/Context.html so I can specify a cache key near the beginning of a request handler, and later my response middleware picks it up to store the response body.