Integrating Node.js

Slides from NodejsConf.it talk

Transcript

1. Integrating
   Node.js
   into an existing
   technology stack
   

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2. Andrew Nesbitt
   github.com/andrew
   @teabass
   

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3. forwardtechnology.co.uk
   

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7. Show of hands
   

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8. Benefits of Node
   

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9. Legacy Systems
   

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10. Benefits of
    integration
    

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11. Let’s do this!
    

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12. 1. Standalone Tools
    

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13. Command line tools
    Asset minification
    Pixel Trackers
    Url shorteners
    Internal tools
    Monitoring
    Chat bots
    Examples
    

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14. Legacy App
    Internal tool
    Internal tool
    Internal tool
    Internal tool
    

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15. Easy to setup
    Very little integration
    Little experience needed
    Pros
    

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16. Extra dependencies
    Knowledge silos
    Cons
    

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17. 2. Shared databases
    

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18. Connect directly existing database
    Read from a data warehouse
    Share data with a key-value store
    Examples
    

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19. Legacy App
    DB
    Node
    

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20. Quick and dirty
    Adapters for almost every DB available
    Slow databases not a problem
    Pros
    

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21. Duplicating domain logic
    Race-conditions
    Your DBA will likely hate you
    Cons
    

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23. 3. Using APIs
    

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24. Use API from existing application
    Linkedin Mobile
    Github Downloads
    Examples
    

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25. Legacy App
    DB
    Node
    

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26. Avoid duplication of domain logic
    JSON APIs are lovely to work with
    Plays to Nodes strengths
    Pros
    

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27. Extra load on existing application
    Might have to build/extend existing API
    What if the legacy app goes down?
    Cons
    

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28. 4. Creating APIs
    

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29. Websocket Services
    Streaming services
    APIs for Mobile Apps
    Proxy serivces
    File upload handling
    Ebay’s ql.io
    Examples
    

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30. DB
    Node
    Clients
    

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31. Handle very load
    Lots of concurrent connections
    JSON comes naturally
    Pros
    

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32. Cons
    You now have a dependeny on Node
    System adminstration
    Teaching others about it
    

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33. mysql
    Rails
    Disc Cache
    Nginx
    Redis
    Node
    Browser
    Pusher
    http://live.mpora.com
    Mpora Live
    

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34. 5. Message Queues
    

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35. ZeroMQ
    Resque
    Redis Pubsub
    dnode
    Examples
    

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36. Message
    Queue
    Legacy App
    Node
    Legacy
    Worker
    

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37. 6. Streams
    

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38. Twitter, Facebook, Salesforce
    HTTP long polling
    Comet
    XMPP
    Examples
    

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39. 7. Embedding
    

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40. Ruby Racer
    Android
    Hadoop and Timothy
    Sprintstack
    PLV8
    Examples
    

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41. create or replace function
    fib(n int) returns int as $$
    function fib(n) {
    return n<2 ? n : fib(n-1) + fib(n-2)
    }
    return fib(n)
    $$ LANGUAGE plv8 IMMUTABLE STRICT;
    

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42. http://pgeu-plv8.herokuapp.com
    

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43. Legacy App
    Node
    

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44. Scripting within compiled languages
    Use existing, battle tested software
    Enable Node on embedded devices
    Pros
    

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45. Under heavy development
    You need to know the host platform
    Context switching overhead
    Cons
    

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46. Take a unix-like approach
    Decoupled Systems
    Use APIs to share data
    Play to node’s strengths
    Summary
    

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47. Node on Andriod - lanyrd.com/smpbg
    Rails and Node.js - lanyrd.com/srmwr
    Hadoop and Timothy - lanyrd.com/sttxx
    Rhinode (Sprintstack) - lanyrd.com/srmwx
    These slides - lanyrd.com/szwyc
    Links
    

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