Here are the slides for the talk that myself (Erol Ziya - @eazynow) and Rob Baines (@telecoda) gave at the first Twiliocon Europe, providing tips for when moving from PoC to production based on our experiences in hibu labs. #twiliocon

1. From
Proof of Concept
to Production
Lessons learnt

2. The Lesson:
PoC != Production

3. who are we?
Erol
Ziya
Rob
Baines

4. hi-who?

6. We were…
(UK)
(USA)
(Spain / Lat AM)

7. More
recently...

8. So who
are
Labs?

9. Where does
fit in?

10. Promoted
customer’s numbers
then left
them to it…

11. What did we
want to change
?

12. Add value
Get involved in
the calls
Help
our customers

13. So we built a PoC...

14. POC Architecture

15. They
LOVED
it
!

16. Let’s use it for
REAL

17. Keep it simple
Reduce:
features
complexity

18. Focus on basics
Number purchase
Verification
Call diverts

19. Then enhance
SMS’s
Blacklisting
Voicemail

20. Finally
Call Analytics
Customer view
Admin view
Status summary
Etc.

21. What
did we use
?

22. Tools, tools, tools!
?

23. Prod Architecture

24. What does this
give us
?

25. reliability
scalability
uptime
low latency
high
throughput

26. Time for the
tips
!

27. “
Developers just
want to develop

28. Automate
yo
ur d
eve
lopm
ent
environment

29. Automate deployment with
Fabric
http://www.fabfile.org
local-pc$ fab aws_dev deploy_site

30. twilio
loves
to talk
to you

31. Developers
like to
be able to
debug
locally

32. Companies
don’t like
external services
talking to you

33. Tunnel your
way out to
freedom!
ngrok

34. Make the most of your
source code
repository
Branch your feature
Pull Request for feedback

35. Don’t reinvent the wheel
Joebloggs/super-cool-adapter.git
SuperCrunchAlgorithms
TwimlThumper
VoiceBanger

36. But don’t get caught out
6 months
later
Joebloggs/super-cool-adapter.git
SuperCrunchAlgorithms
TwimlThumper
VoiceBanger
Joebloggs/super-cool-adapter.git

37. Fork it!
Joebloggs/super-cool-adapter.git
SuperCrunchAlgorithms
TwimlThumper
VoiceBanger
Joebloggs/super-cool-adapter.git
J
hibulabs/super-cool-adapter.git

38. “
So many numbers,
so many formats…

39. 0877 237 6120
+44 877 237 6120
08772376120
libphonenumber
server
client
Validate
.
1
6
4

40. ?
Who is using it

41. Verification
Don’t call
us we’ll
call you…

42. They spent
?
HOW MUCH

43. Subaccounts are
your friend!
master
£
£
£
£
£
£
£
£
£

44. isolation
separation
partitioning
cost control
accountability

45. “
We should
NEVER
lose a call

46. Balance the
load
and deploy
without
downtime

47. And if the
whole system
fails…
failover

48. And what about
reuse
?

49. Give/it/a/REST

50. How can we be
it still
works
confident
?

51. Test
Test
!
Test

52. Has the
logic
changed
?

53. Unit
assert
yourself

54. Did we break
our
contract
?

55. Are you!
HTTP 200?
POST
Functional
GET

56. Are they
ALL
behaving
?

57. Browser
Selenium UI

58. Can we
BREAK it
?

59. !
Push it to the
limit

60. !
more
Push it to the
limit
and then some

61. Load/Perf
API
aws: boto!

62. Metrics, metrics, metrics!
Response
Codes
Latency
Requests
per second
and MUCH more

63. Eat,
sleep,
test,
repeat

64. Does it
REALLY
make phone
calls
?

65. receive calls
make calls
It’s
“SIP-simple”
sipsimpleclient.org!

66. But will it actually
scale
?

67. Don’t be a
monolith

68. Don’t be a
monolith
mod
ular
ise
it

69. Scale only where you
need it
mod
ular
ise
it
mod
it
mod
it
mod

70. Reduce latency
1 call divert with a whisper
1
2
3

71. Reduce latency
Static?
CACHE IT!

72. Reduce latency
Work
smarter
not
harder

73. Hey big
spender
!

74. Pricing tips
$
Watch the $$
Reserve &
Save

75. Pricing tips
es
Ti
ic
er
ed
Pr

76. Just to recap 1
• Validate and verify numbers
• Use subaccounts to
partition cost
• Monitor your servers
performance
• Test it, and test it some more
• Make the most of tiered pricing

77. Just to recap 2
• Automate Everything
• Use tools like localtunnel for
debugging
• Branch off features
• Don't reinvent the wheel
• Deploy without downtime
• Have a failover plan in place
• Make it RESTful
• Modularise your code
• Minimise the latency on a call

78. Any
questions
?

79. Thank you
Erol
Ziya
@eazynow
Rob
Baines
@telecoda