Your API is too slow!

RedDotRubyConf 2016

Transcript

1. @arnvald, RedDotRubyConf 2016
   YOUR API IS TOO SLOW!
   

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3. @arnvald, RedDotRubyConf 2016
   YOUR API IS TOO SLOW!
   

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4. @arnvald, RedDotRubyConf 2016
   YOUR API IS TOO SLOW!
   2TQDCDN[
   HCUVGPQWIJ
   

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5. Grzegorz Witek
   

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6. is speed a feature?
   

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7. is lack of speed a bug?
   

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8. Algolia
   Github
   

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9. Web application optimization
   loading priority
   static content
   dynamic content
   domain sharing
   JavaScript
   compression
   asset minifying CSS
   HTML
   un-CSS
   prefetching
   HTTP/2 image sprites
   CDN
   database optimization
   multi-threading
   

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10. Web API optimization
    loading priority
    static content
    dynamic content
    domain sharing
    JavaScript
    compression
    asset minifying CSS
    HTML
    un-CSS
    prefetching
    HTTP/2 image sprites
    CDN
    database optimization
    multi-threading
    

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11. Long way of a request
    ! " #
    

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12. Latency
    ! " #
    

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13. Where are your users?
    "
    

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14. Where are your users?
    "
    Singapore Jakarta
    13ms
    

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15. Where are your users?
    "
    Singapore Hanoi
    100ms
    

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16. Where are your users?
    "
    Singapore New York
    265ms
    

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17. Where are your users?
    "
    Singapore Shanghai
    320ms
    

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18. Dynamic content acceleration
    ! CDN
    #
    

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19. Latency
    
    

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20. Latency
     
    
    

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21. Long way of a request
    ! " #
    

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22. Processing
    #
    

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23. Don’t be a smart-ass
    “Oh, I know, we have to cache it!”
    

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24. Measure
    gem 'ruby-prof'

    gem 'rack-mini-profiler'
    

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25. Measure
    in production mode
    
    pre-production stage
    

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26. Measure
    gem 'newrelic'

    gem 'skylight'
    

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27. Measure
    profile - focus on the slowest part
    

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28. Measure
    benchmark - compare alternative solutions
    

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29. Improve
    

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30. Improve
    Rely on your database
    

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31. Improve
    Where is your cache?
    

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32. Improve
    Redis on a separate machine - fast
    
    Redis on the same machine - faster
    
    Application memory - the fastest
    

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33. Improve
    Multi-layered cache (Russian doll caching)
    

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34. Improve
    When needed - mutate
    

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35. Improve
    Upgrade your libraries
    

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36. Improve
    When needed - replace your libraries
    

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37. Improve
    gem 'json'

    

    gem 'oj'
    gem 'oj-mimic-json'
    

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38. Improve
    Native extensions - not only C!
    

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39. Improve
    https://github.com/rustbridge/helix
    
    https://github.com/d-unseductable/ruru
    

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40. Improve
    Move processing to the background
    

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41. Improve
    When desperate - extract part of the application
    

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42. Improve
    I said "when desperate" not "ASAP NOW!!!11"
    

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43. Improve
    I said "part", not "rewrite everything in Go"
    

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44. Improve
    There's more, way more
    

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45. Long way of a request
    ! " #
    

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46. Download
    ! " #
    

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47. Improve
    Not only GZIP
    

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48. Long way of a request
    ! " #
    

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49. Speed up your API
    use CDN infrastructure
    
    profile and benchmark
    
    focus on the slowest part
    
    rewriting is the last thing to consider
    

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50. Speed up your API
    Ruby is fast enough
    
    Sinatra is fast enough
    
    Rails is fast enough
    

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51. @arnvald, RedDotRubyConf 2016
    YOUR API IS TOO SLOW!
    2TQDCDN[
    HCUVGPQWIJ
    

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