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  • 1. Erlang Web Framework Cuong Thai www.htk-inc.com bronzeboyvn@gmail.com
  • 2. Content 1. Why Erlang? ● ● ● concurrency distributed fault-tolerance 2. Are you kidding me? ● ● 10 times faster than PHP c10k, 1000msg/sec, 24hours, 78Mb 3. Database-driven website.
  • 3. Concurrency Concurrency for our web applications and API backends means that we'd like our htop look like this
  • 4. Concurrency Erlang is easy capable of spawning hundreds of thousands of processes on a single system running on commodity hard-ware.
  • 5. Distributed You can have a number of machines across net-work happily chatting with another. Bill Rick Zoey Daryl
  • 6. Distributed Process communication by copying Location transparency (clustering) Bill Rick Zoey Daryl
  • 7. Fault-tolerance
  • 8. Fault-tolerance
  • 9. Fault-tolerance
  • 10. Fault-tolerance
  • 11. Fault-tolerance
  • 12. Are you kidding me? “With PHP framework you typically see page generation times between 150 and 600 milliseconds. Zotonic has a typical page generation time of 10 milliseconds or less.” How about you, Chicago Boss?
  • 13. siege -c15 http://localhost:8001/admin -b -t30s ** SIEGE 2.72 ** Preparing 15 concurrent users for battle. The server is now under siege... Lifting the server siege... Transactions: Availability: done. 21144 hits 100.00 % Elapsed time: 29.12 secs Data transferred: 116.59 MB Response time: 0.02 secs Transaction rate: 726.10 trans/sec Throughput: 4.00 MB/sec Concurrency: 14.98 Successful transactions: 21144 Failed transactions: 0 Longest transaction: 0.05 Shortest transaction: 0.00
  • 14. siege -c150 http://localhost:8001/admin -b -t30s ** SIEGE 2.72 ** Preparing 150 concurrent users for battle. The server is now under siege... Lifting the server siege... Transactions: Availability: done. 20247 hits 100.00 % Elapsed time: 29.32 secs Data transferred: 111.64 MB Response time: 0.22 secs Transaction rate: 690.55 trans/sec Throughput: 3.81 MB/sec Concurrency: 149.36 Successful transactions: 20247 Failed transactions: 0 Longest transaction: 0.46 Shortest transaction: 0.01
  • 15. Are you kidding me? metabrew.com Richard Jones co-founded and was CTO of last.fm for 6 years
  • 16. Database-driven website ● Hello World page ● Hello World JSON ● Hello World template ● BossMQ
  • 17. Q&A
  • 18. Thank you for your attention! Ref. ● learnyousomeerlang.com ● Erlang and OTP in action (Martin Logan, Eric Merritt, Richard Carlsson) ● metabrew.com ● infrequently.org/2006/03/comet-low-latency-data-for-the-browser/ ● zotonic.com/features ● github.com/evanmiller/ChicagoBoss/wiki/An-Evening-With-Chicago-Boss