Simplifying systems with Elixir

LambdUp, Prague, 2018

Transcript

1. Simplifying systems
   with Elixir
   @sasajuric
   aircloak.com
   

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2. Elixir
   functional
   concurrent
   

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3. process
   ...
   foo(...)
   bar(...)
   ...
   

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4. functional Elixir
   modules and functions
   immutable data
   first-class functions
   

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5. ...
   spawn(fn -> ... end)
   ...
   

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6. process A
   ...
   foo(...)
   bar(...)
   ...
   process B
   ...
   baz(...)
   qux(...)
   ...
   

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7. scheduler scheduler scheduler scheduler
   BEAM (Erlang VM)
   CPU CPU CPU CPU
   

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8. concurrent
   functional
   

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11. less moving parts
    simpler development
    simpler testing
    simpler deployment
    simpler maintenance
    improved collaboration
    

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12. theerlangelist.com
    

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13. git clone https://github.com/sasa1977/erlangelist.git
    mix deps.get && pushd assets && npm install && popd
    iex -S mix phx.server
    

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15. #1 serving requests
    

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16. http listener https listener
    

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17. http listener https listener
    handler 1 handler 2 handler n
    …
    

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18. #2 usage stats
    

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19. stats collector
    handler
    handler handler
    disk writer
    

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20. cleanup
    

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21. scheduler cleanup job
    periodically starts
    

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22. #3 HTTPS
    

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23. our system CA server
    certificate request
    challenge info
    challenge
    

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24. certifier
    http server
    usage stats
    

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25. dev CA server
    

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27. Elixir in a nutshell
    start simple
    go far
    

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28. 40% off using code
    ctwlambdup at
    manning.com
    

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