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![My experience of using crystal in production.
1.5 month ago i rewrite our critical ruby service (EventMachine, 2000 SLOC) to crystal
(900 SLOC). It was quite easy, i spend only a week.Service listen on socket and handle
10M/requests per day. It running as daemon and getting-updating values in memory.
Also it listen on http, to render simple Admins, have ~10 coroutines with cron_scheduler
to some updates on memory, and ~20 coroutines with outcoming socket connections.
I don’t want to rewrite it to Go because i need readable code for our Ruby team for easy
maintaining.
Now it running in production for a month without restart. Used 185Mb, peak cpu usage 30%
(ruby daemon leaking memory and restarting every day, peak cpu usage was > 100% (maybe
300%)).
We are quite happy.
[...]](https://image.slidesharecdn.com/daringtotry-crystalatrubyconf-171118145703/85/Daring-to-Try-Crystal-Language-at-RubyConf-15-320.jpg)
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Daring to Try - Crystal Language at RubyConf
- 1. RubyConf | SãoPaulo 2017
- 2.
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- 5. Unknown, Big andRisky
- 7. Unknown, Big andRisky
- 8. ● High levellanguage (Ruby-like) with near-native performance (close to C) ● 5+ years ● 9500 followers in Github ● $2.000 + donations per month from more than 100 organizations and individuals
- 9. ● Loved Rubysyntax ● Disliked dynamic typing
- 10. Compile ruby codeto LLVM
- 12. First “real” versionof the parser
- 14. Drop some self-imposedconstraints
- 15. My experience ofusing crystal in production. 1.5 month ago i rewrite our critical ruby service (EventMachine, 2000 SLOC) to crystal (900 SLOC). It was quite easy, i spend only a week.Service listen on socket and handle 10M/requests per day. It running as daemon and getting-updating values in memory. Also it listen on http, to render simple Admins, have ~10 coroutines with cron_scheduler to some updates on memory, and ~20 coroutines with outcoming socket connections. I don’t want to rewrite it to Go because i need readable code for our Ruby team for easy maintaining. Now it running in production for a month without restart. Used 185Mb, peak cpu usage 30% (ruby daemon leaking memory and restarting every day, peak cpu usage was > 100% (maybe 300%)). We are quite happy. [...]
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- 18. ● Release 1.0 ●Fundraise ● Improve transparency and communications ● Augment the core team
- 19. 1. Valid problem,adjacent innovation and fun 2. Start! 3. Show it early 4. Be patient a. Optimal stopping 5. Share it as “non-finito” 6. Build on communities 7. Enlist Starters, Implementers and Finishers
- 20. ● Unknown but“Adjacent Innovation” ● Big but Fun ● Risky but “Valid problem” Big Risky Unknown Valid problem Fun Adjacent innovation
- 21. Believe in yourselfStrawman Experiment mindset
- 24. Don’t rush: attackand withdraw
- 25. ● Decide what’sthe max time you have for something ● Spend 1/3 evaluating options and studying the solution space (don’t settle for any yet) ● Get to work and go with the first thing that is better than what you evaluated so far.
- 26. Share it as“non-finito”
- 28. Start 10% of time 1/3of effort Implementation 80% of time 1/3 of effort Finalize 10% of time 1/3 of effort Effortrequired Duration of the project You need Starters, Implementers and Finishers
- 29. 1. Valid problem,adjacent innovation and fun 2. Start! 3. Show it early 4. Be patient a. Optimal stopping 5. Share it as “non-finito” 6. Build on communities 7. Enlist Starters, Implementers and Finishers
- 31. openredis Fly.io tpberntsenposthumanismFabio Akita _TOP 5 SPONSORS_ Me (Nico) Manas.Tech Crystal @nditada @manastech @CrystalLanguage