I gave this presentation at Codemotion Rome, it's the a story on a monolithic architecture evolved to an SOA architecture.

1. ROME 27-28 march 2015
Alessandro Cinelli (cirpo)
PHP is the king,
nodejs is the prince,
Python the fool

2. ROME 27-28 march 2015
Alessandro Cinelli (cirpo)

4. dubai

5. dubai

6. namshi

7. namshinamshi

8. Namshi
almost 3 years old
~350 ppl
IT team ~15 ppl
million+ visits per month
serving the UAE and GCC

16. ARCHITECTURE

17. a monolithic architecture

18. so far so good… but we started growing…

19. “we need a brand new feature for the warehouse…”

20. SOA

21. Service Oriented
Architecture

22. “A software design based on discrete software
components, "services", that collectively
provide the functionalities of the larger
software application”
– A.Nadalin (@_odino_)

23. “Microservice Architecture" […] a particular way of
designing software applications as suites of
independently deployable services…”
– M.Fowler
FULL STACK IS DEAD!

24. services as LEGO bricks

25. UNIX Philosophy
“Write programs that do one thing and do it well.”

26. SOA BENEFITS

27. SOA BENEFITS
scalability

28. SOA BENEFITS
scalability
avoid single point of failure

29. SOA BENEFITS
scalability
avoid single point of failure
easier and faster deploys

30. SOA BENEFITS
scalability
avoid single point of failure
easier and faster deploys
isolation

31. SOA BENEFITS
scalability
avoid single point of failure
easier and faster deploys
isolation
maintainability

32. SOA BENEFITS
scalability
avoid single point of failure
easier and faster deploys
isolation
maintainability
easier to replace existing parts

33. How do you connect services?

34. HTTP
A protocol that is almost 25 years old
and is here to stay!

35. GET vs POST

36. GET vs POST
“The difference is that in
a GET request you have the parameters in the url ,
with
a POST the parameters are in the request’s body”
answered by 80% of candidates during the interview

38. “you don’t know HTTP?
you shall not pass”
- Gandalf

39. RabbitMq

40. using crons!

41. RabbitMq
publish consume
q
u
e
u
e

42. RabbitMq
github.com/videlalvaro/php-amqplib

43. RabbitMq
github.com/videlalvaro/php-amqplib

44. RabbitMq
Language and protocol format agnostic

45. RabbitMq
Language and protocol format agnostic
You can easily create an event driven architecture

46. RabbitMq
Language and protocol format agnostic
You can easily create an event driven architecture
Messages stay in the queue if a service goes down

47. RabbitMq
Language and protocol format agnostic
You can easily create an event driven architecture
Messages stay in the queue if a service goes down
Too many messages? add more consumers!

48. PHP

49. PHP
It follows standards (PSR-*)

50. PHP
It follows standards (PSR-*)
Decoupled components

51. PHP
It follows standards (PSR-*)
Decoupled components
Huge and active opensource community

52. PHP
It follows standards (PSR-*)
Decoupled components
Huge and active opensource community
Easy to plug in your domain code

53. PHP
It follows standards (PSR-*)
Decoupled components
Huge and active opensource community
Easy to plug in your domain code
Not just a framework, but a project…

54. PHP
It follows standards (PSR-*)
Decoupled components
Huge and active opensource community
Easy to plug in your domain code
Not just a framework, but a project…
Designed starting from the HTTP protocol

55. PHP
bundle -> app -> service

56. PHP
UserBundle
WarehouseBundle
CheckoutBundle
ProductBundle
[…]

57. Once you have a SOLID set of api
foundation you can easily start building
other awesome applications

58. PHP - Silex
the PHP micro-framework based on
Symfony2 Components

59. PHP - Silex

60. Let’s eat those apis!

61. Javascript

62. Javascript
Two way data-binding
Single page application
Built-in services on top of XHR
Routing
Controller
Model

63. Javascript
Two way data-binding
Single page application
Built-in services on top of XHR
Routing
Controller
Model
it’s a MVW framework: Model-View-Whatever

64. Javascript

65. Javascript

66. Javascript

67. Javascript

68. party time!

69. FROM STATEFUL TO
STATELESS
Removed server sessions
Sessions on the client (localstorage)

70. STATELESS
JSON Web Signature
http://tools.ietf.org/html/draft-jones-json-web-signature-04

71. PHP -JWS
github.com/namshi/jose
JOSÉ

72. PHP -JWS

73. PHP -JWS

74. double party time!

75. let’s do the same with the desktop website!

76. some customers were experiencing some issues…

77. JAVASCRIPT

78. JAVASCRIPT

79. JAVASCRIPT

80. we rebuilt the desktop website in two weeks!

81. JAVASCRIPT
Rapid application development
Quick setup
Event driven
Javascript!
why node?

82. github.com/namshi/mockserver
mockserver
mock your APIs in a matter of seconds!
JAVASCRIPT

83. JAVASCRIPT

84. JAVASCRIPT
mockserver

85. JAVASCRIPT
users_GET.mock file
mockserver

86. JAVASCRIPT
mockserver

87. JAVASCRIPT
github.com/namshi/shisha
shisha
smoke tests made easy!

88. JAVASCRIPT
shisha
.smoke file

89. JAVASCRIPT
shisha

90. REDIS

91. REDIS
Key types: lists, hashes, sets, sorted sets

92. REDIS
Key types: lists, hashes, sets, sorted sets
Persistent to disk

93. REDIS
Key types: lists, hashes, sets, sorted sets
Persistent to disk
Up to 512MB per key

94. REDIS
Key types: lists, hashes, sets, sorted sets
Persistent to disk
Up to 512MB per key
Pub/sub

95. REDIS
Key types: lists, hashes, sets, sorted sets
Persistent to disk
Up to 512MB per key
Pub/sub
Transactions with optimistic locking

96. REDIS
github.com/nrk/predis

97. PYTHON

98. PYTHON
Data analysis
Small app with flask
Sys scripts

99. DOCKER

100. “Operating-system-level virtualization is a
virtualization method where the kernel of an
operating system allows for multiple isolated
user space instances, instead of just one.
Such instances, often called CONTAINERS, or
jails, may look and feel like a real server from
the point of view of its owners and users.”
http://en.wikipedia.org/wiki/Docker_%28software%29

102. lego

107. ONE CONTAINER
=
ONE COMMAND

108. DIFFERENCE BETWEEN A VM AND DOCKER
HOST OS
GUEST
OS
HYPERVISOR
BIN/
LIBS
APP A
APP C
APP B
GUEST
OS
BIN/
LIBS
APP Z
APP H
APP B
GUEST
OS
BIN/
LIBS
APP A
APP D
APP L
HOST OS
DOCKER ENGINE
BIN/
LIBS
APP A
BIN/
LIBS
APP Z
BIN/
LIBS
APP D
BIN/
LIBS
APP B{ {
VM

109. CURRENT ARCHITECTURE
other clients

110. WHAT’S NEXT?
(more)
(maybe)

111. il mondo è bello perché è vario
il mondo è bello perché è vario

112. il mondo è bello perché è vario
open your mind…

113. use the right tool

114. you can solve problems in different ways

115. @cirpo
github.com/cirpo
/

116. thanks

117. tech.namshi.com/join-us
tech.namshi.com
github.com/namshi
@TechNamshi
we are hiring!

118. thanks

119. https://farm3.staticflickr.com/2199/2365883747_3a5c753719_o.jpg
https://www.flickr.com/photos/karen_roe/8912245799
https://www.flickr.com/photos/anaxila/367953499/sizes/l
https://www.flickr.com/photos/onigiri_chang/5356325784/sizes/o/
http://www.slideshare.net/odino/soa-with-symfony2-confoo-2014-in-montreal-ca
https://www.flickr.com/photos/ejpphoto/2314610838/sizes/o/
https://www.flickr.com/photos/cesarastudillo/3981364314/sizes/l
https://www.flickr.com/photos/piers_nye/2501994750/sizes/o/
https://www.flickr.com/photos/36247316@N00/3108399560/sizes/o/
https://www.flickr.com/photos/ironpoison_photos_69/9604127837/sizes/k/
https://www.flickr.com/photos/chrisschoenbohm/5104367911/sizes/l
credits