Polyglot

How To Write A Web App in 6 Programming Languages

Transcript

1. Polyglot
   Or  How  To  Write  A  Web  App  in  6  
   Programming  Languages
   Chang  Sau  Sheong  
   Oct  2014
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2. *  http://spectrum.ieee.org/computing/software/top-­‐10-­‐programming-­‐languages
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3. *http://blog.codeeval.com/codeevalblog/2014
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4. Programming  
   language  wars
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5. Dependency  hell
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6. Polyglot
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7. Build  your  web  app  
   with  any  language
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8. All  at  once
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9. Acceptor
   HTTP
   Responder
   Responder
   Responder
   POST/_/post
   Responder
   Responder
   Responder
   GET/_/posts
   Acceptor
   HTTP
   Acceptor
   HTTP
   Broker
   ZMQ
   ZMQ
   Responder
   Responder
   Responder
   GET/_/post/new
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10. 10
    Acceptor P
    

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11. 11
    P
    Broker
    

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12. 12
    Responder
    You  need  to  write  this
    

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13. Simple  responder
    require 'securerandom'
    require 'bundler'
    Bundler.require
    broker = "tcp://localhost:4321"
    routeid = "GET/_/hello/ruby"
    identity = SecureRandom.uuid
    puts "#{routeid} - #{identity} responder ready."
    ctx = ZMQ::Context.new
    client = ctx.socket ZMQ::REQ
    client.identity = identity
    client.connect broker
    client.send_string routeid
    loop do
    request = String.new
    client.recv_string request
    response = [routeid, "200", "{\"Content-Type\":
    \"text/html\"}", "Hello World"]
    client.send_strings response
    end
    Define  route  ID  and  unique  
    responder  identity
    Connect  to  broker
    Register  responder
    Receive  request  and  process  
    it
    Return  with  response
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14. Distributed  by  default
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15. 15
    Broker
    Acceptor
    Responder Responder Responder
    

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16. Scale  as  you  like  it
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17. 17
    Broker
    Acceptor
    Responder Responder Responder
    Acceptor
    Responder
    

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18. Evolve  your  web  app
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19. 19
    Broker
    Acceptor
    Responder Responder Responder
    

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20. Still  Evolving  
    (need  your  feedback  and  help)
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21. http://github.com/sausheong/polyglot  
    sausheong@gmail.com  
    @sausheong
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