Hi there!
I’m Javier Valencia, I love crystal and I use it on my business.
I’m a long time Rubyist, but I jumped to Kemal and Amber.
I’m using Golang in the same quantity/time as Crystal.
I think I can help some to our community.
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That’s a nice poem 
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Hi Javier,
Great to hear that you have used both Go and Crystal. I currently use Go for doing backend work, but have been looking into trying out Crystal. I have seen basic Kemal docs, and I really like what I have seen. It appears to be a great framework, but I have not yet tried it. Can you compare your experience in Crystal and Go? Are there reasons (any projects) for which you would still choose Go over Crystal; or do you think that Crystal is mature enough to replace Go for any type of web application project.
Thank you.
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At begin of 2017, I have a whole rails app (web+api), and I start to rewrite the API on golang using gin-gonic, but when I finished this I rewrite again the API but in Kemal. I gain on readabiliy, maintainability with best development times, and about the performance and stability aspects maybe both languages are similar (crystal appear about 10% execution faster). Finally I adopt a crystal API.
At now (from begin 2018), thanks to nginx reverse proxy, y can rewrite parts of rails app to crystal throught amber. I’m doing faster than I think initially.
I can see the results in the invoices of my servers, and that savings is now in my payroll.
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