Integrating Node.js

Slides from NodejsConf.it talk

Transcript

1. Integrating Node.js into an existing technology stack
2. Andrew Nesbitt github.com/andrew @teabass
3. forwardtechnology.co.uk
7. Show of hands
8. Benefits of Node
9. Legacy Systems
10. Benefits of integration
11. Let’s do this!
12. 1. Standalone Tools
13. Command line tools Asset minification Pixel Trackers Url shorteners Internal tools Monitoring Chat bots Examples
14. Legacy App Internal tool Internal tool Internal tool Internal tool
15. Easy to setup Very little integration Little experience needed Pros
16. Extra dependencies Knowledge silos Cons
17. 2. Shared databases
18. Connect directly existing database Read from a data warehouse Share data with a key-value store Examples
19. Legacy App DB Node
20. Quick and dirty Adapters for almost every DB available Slow databases not a problem Pros
21. Duplicating domain logic Race-conditions Your DBA will likely hate you Cons
23. 3. Using APIs
24. Use API from existing application Linkedin Mobile Github Downloads Examples
25. Legacy App DB Node
26. Avoid duplication of domain logic JSON APIs are lovely to work with Plays to Nodes strengths Pros
27. Extra load on existing application Might have to build/extend existing API What if the legacy app goes down? Cons
28. 4. Creating APIs
29. Websocket Services Streaming services APIs for Mobile Apps Proxy serivces File upload handling Ebay’s ql.io Examples
30. DB Node Clients
31. Handle very load Lots of concurrent connections JSON comes naturally Pros
32. Cons You now have a dependeny on Node System adminstration Teaching others about it
33. mysql Rails Disc Cache Nginx Redis Node Browser Pusher http://live.mpora.com Mpora Live
34. 5. Message Queues
35. ZeroMQ Resque Redis Pubsub dnode Examples
36. Message Queue Legacy App Node Legacy Worker
37. 6. Streams
38. Twitter, Facebook, Salesforce HTTP long polling Comet XMPP Examples
39. 7. Embedding
40. Ruby Racer Android Hadoop and Timothy Sprintstack PLV8 Examples
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;
42. http://pgeu-plv8.herokuapp.com
43. Legacy App Node
44. Scripting within compiled languages Use existing, battle tested software Enable Node on embedded devices Pros
45. Under heavy development You need to know the host platform Context switching overhead Cons
46. Take a unix-like approach Decoupled Systems Use APIs to share data Play to node’s strengths Summary
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