Effective Node.js Architectures

Transcript

1. Effective Node.js Architectures @dshaw

2. Daniel D. Shaw @dshaw

3. I like to build things with Node

4. Build Node Things • Storify • Spreecast • Node Knockout

   • Voxer • The Node Firm

5. Do Less Well

6. FP for Distributed Architectures

7. What do I do? - your processes

8. Evolutionary Shapes • ALL THE THINGS! • Generalization • Specialization

   • One Thing

9. ALL THE THINGS Mixture

10. ALL THE THINGS Easy to run, multi-process, single execution point.

11. Generalization Not all apps need to aspire to be the

    next Facebook.

12. Scale Will you really need it?

13. Building and Planning Node.js application

14. Generalization • Express + Socket.io + API • Website +

    API • Restify

15. Am I doing too much?

16. Trade-offs

17. Trade-offs • Expensive loads limit conjoined services. • Impact of

    exceptions and crashes. • Deployment complexity. • Deployment isolation. • Evolve services independently.

18. Dumb Clusters Simple Pooling

19. Dumb Cluster • Static file server • Simple web sites

    • Minimal client/server • API server hosts

20. Pooling Tools • Round Robin DNS • Varnish • Nginx

    • HAProxy • ...more node

21. Pooling Tools • Substack - seaport, etc • Nodejitsu -

    node-http-proxy • Poolee - battle tested at Voxer

22. Distribute Load Data store(s) have the definitive answers

23. Smarter Clusters Session Affinity

24. Sticky Sessions

25. Sticky Sessions Resources • 3rd party infrastructure • HAProxy •

    nginx • stud-proxy - Mikeal

26. Smart Clusters (Consistent Hash Rings)

27. Why? Complex interactions or data persistence

28. Properties of Consistent Hash Rings • Deterministic • Change has

    minimal impact on determinism • Crunchy middle?

29. House of Pain Complexity

30. Consistent Hash Ring Resources • node-hashring - 3rdEden • node-hash-ring

    - Brian Noguchi, C++, dated • Build your own

31. Right for the Task As simple as possible

32. None

33. Thank You! <3 dshaw