1. Erlang/OTP
BPStudy #34
2010-06-30
NAKAI Ryosuke
Accense Technology, Inc.

2. Erlang
Erlang
OTP
Mnesia

3. @voluntas
21
Erlang 3 Python
Erlang

4. Erlang
Erlang
3

5. Erlang
RabbitMQ
ejabberd
MochiWeb
CouchDB
ErlyVideo

6. RabbitMQ
AMQP
Advanced Message Queueing Protocol
VMWare
http://www.rabbitmq.com/

7. ejabberd
XMPP
eXtensible Messaging and Presence Protocol
Google Talk
http://www.ejabberd.im/

8. MochiWeb
Web
MochiMedia
Facebook CouchDB
http://github.com/mochi/mochiweb

9. CouchDB
DB
IBM
T-Mobile BBC
http://couchdb.apache.org/

10. ErlyVideo
RTMP
1 ...
http://github.com/erlyvideo/erlyvideo

11. WebSocket Server (Erlang) (HTML5)
WebGL (HTML5)
DEMO
@MiCHiLU + @webos_goodies

12. Erlang ?

13. spawn(Module, Function, Args)
spawn(Fun)
(Fiber?)
2~3

14. top
top - 11:15:39 up 4 days, 23:43, 6 users, load average: 0.44, 0.71, 0.53
Tasks: 178 total, 1 running, 177 sleeping, 0 stopped, 0 zombie
Cpu0 : 92.1%us, 0.3%sy, 0.0%ni, 7.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 91.3%us, 0.3%sy, 0.0%ni, 8.4%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 92.3%us, 0.3%sy, 0.0%ni, 7.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu3 : 94.4%us, 0.0%sy, 0.0%ni, 5.6%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu4 : 94.1%us, 0.7%sy, 0.0%ni, 5.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu5 : 94.1%us, 1.0%sy, 0.0%ni, 4.9%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu6 : 85.8%us, 0.9%sy, 0.0%ni, 13.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu7 : 92.6%us, 1.3%sy, 0.0%ni, 6.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8259008k total, 4047528k used, 4211480k free, 78508k buffers
Swap: 6369272k total, 0k used, 6369272k free, 2475444k cached

15. spawn
spawn(fun() -> end)
DEMO
Pid ! Terms ok.
DEMO

16. A = 10 A = 20
A = 10 A = 10
DEMO

17. DEMO

18. DEMO
if
case ... of
DEMO

19. Erlang
Python
Erlang OTP

20. OTP
Open Telecom Platform
OTP > Erlang
loop

21. OTP
gen_server, supervisor, application 3
DEMO
gen_event, gen_fsm
behaviour

22. Mnesia
Erlang DB

23. DEMO
QLC SQL
activity/2, activity/4

24. R14A
2010-06-16
binary
crypto NIF
gen:do_call
eprof
9 R14B

25. Q and A
Erlang Windows, Linux, Unix, Solaris, VxWorks
escript R14A
OMake OMake