October presentation on Cloud Computing at IASA Denver by Matthew McCullough

1. a journey to the darker side
Cloud Computing
of
by Matthew McCullough

2. Matthew
McCu llough

5. ?
20 mi n
? mi n
15 min
? min
10 min
min

6. ➊
A brief History

7. 1960

9. “computation may
someday be organized as a
public utility”
-John McCarthy

10. Shared Time

11. circa 2006

12. “It starts with the premise that the data services
and architecture should be on servers. We call it
cloud computing – they should be in a
“cloud” somewhere.”
-Eric Schmidt

13. SaaS

14. Virtualized Servers
with an API

15. ➋
What is the Cloud?

16. “
A style of computing in which
dynamically scalable and
often virtualized resources are
provided as a service over the
Internet.
-NIST (draft)

17. “
[Developers] need not have
knowledge of, expertise in, or
control over the technology
infrastructure in the cloud
that supports them.
-Aggregate of Tim O’Reilly, Luis M.Vaquero

18. Scalable

19. Dynamic

20. Pay-per-use

21. Minimal state

22. Affinity-less

23. Scale up

24. Scale down

25. Grid?

26. ➌
Why the Cloud?

27. Cost of startup

28. Experimentation

29. Transition to
Production

30. No licensing fees

31. Instant availability

32. What’s the most
expensive item on a
startup’s balance sheet?

33. You!

34. Time savings

35. Hardware setup time

36. OS setup time

37. Database setup time

38. Web container setup time

39. Server setup

40. Server destruction

41. ❹
Cloud Players

42. From most open to
most constrained

43. Rackspace Cloud Sites
Rackspace Cloud Servers

44. Amazon EC2

45. Google App Engine

46. Levels of
Abstraction

47. Operating System
Images

48. Predetermined

49. or abstracted away

50. Programming
languages?

51. Anything?

52. PHP?

53. Python?

54. Java?

55. File Systems

56. Rackspace Cloud
Traditional File System

57. Amazon EC2
Elastic Block Storage

58. Mor.ph
Traditional File System

59. Google App Engine
None

60. Datastores

61. Amazon EC2
Simple DB

62. Google App Engine
Big Table

63. Operating
Systems

64. Debian, Fedora, Ubuntu
on Rackspace Cloud

65. Windows Server
on Amazon EC2

66. 1000 variants of Linux
on Amazon EC2

67. CentOS Linux
on Mor.ph

68. Custom Linux
on Google App Engine

69. Pricing

70. Rackspace Cloud

71. 1.5¢ per hour

74. Amazon EC2

76. Google App Engine

77. We’ll give it away free
and make up for it in
volume!

81. Google
❺
App Engine

82. April 8th, 2008

84. Google AppEngine

85. Python

87. April 7th, 2009

89. Java!

91. But more like

92. Banned
⅘
Java

93. Getting Started with
GAE

94. Free to start

95. Cell Phone #

96. Regular Google
Account

97. 10,000: first wave

98. 95 minutes

99. 25,000: second wave

100. Everyone: third wave

101. Technology Stack

102. SDK

104. Shell scripts to manage
apps

105. Source code included

106. SDK-version-locked
by the SDK JARs you
include

107. Subset of JDK 1.6

108. Custom Class Loaders

109. Sandbox

110. Whitelist of Classes

111. Caution!

112. Might work on desktop,
but not on GAE

113. Application ID

114. Globally Unique

115. required for
deployment

116. ___.appspot.com

117. Servlet API

118. Jetty

119. JSPs

120. Java Mail API

121. Google Web Toolkit

122. Authentication
(2 options)

123. Integration with
Google Accounts

125. Admin & User Level
Permissions

126. Roll your own
(hint: use SpringSecurity)

127. Memcache
(as an alternative to persistent disk storage)

128. Low level API

129. JSR-107 / JCache
(javax.cache)

130. BigTable

131. Relational Database?

132. Relational Database

133. Can import from
existing DB

134. JDO

135. JPA

136. Low level BigTable API

137. Limited GORM-JPA

138. DataNucleus

140. Logging

141. java.util.logging

142. System.out == info
System.err == warning

143. Log4j

145. ❻
Dark Clouds

146. a few GAE NOs

147. No Hibernate

148. No file writing

149. No threads

150. No server affinity

151. Even for sequential
requests

152. No sockets

153. But... you can use URLFetch
for HTTP/HTTPS resources

154. No JNI

155. No more than 30s

157. common Concerns

158. Large Setups more
economical to self-host

159. Out of your hands

160. Uptime?

161. Do you trust the
vendor?

162. Databases without
foreign keys is a new
frontier

163. “The interesting thing about cloud computing is that
we’ve redefined cloud computing to include
everything that we already do... Maybe I’m an
idiot, but I have no idea what anyone is talking about...
It’s complete gibberish. It’s insane. When is
this idiocy going to stop?
-Larry Ellison

164. a journey to the darker side of
Cloud Computing

165. Code Examples
http://github.com/matthewmccullough
Twitter
@matthewmccull
Email
matthewm@ambientideas.com
Blog
http://www.ambientideas.com/blog
sidebar has my social networking profile links

166. Resources
• http://mor.ph
• http://appengine.google.com
• http://www.rackspacecloud.com/
cloud_hosting_products/servers
(formerly http://mosso.com)
• http://aws.amazon.com/ec2/

167. Resources
• http://www.browsermob.com
• http://highscalability.com/
• http://highscalability.com/useful-cloud-computing-
blogs
• http://www.youtube.com/watch?
v=ri796Hx8las&feature=channel

168. Photo Credits
• www.ambientideasphotography.com [clouds]
• http://en.wikipedia.org/wiki/John_McCarthy_(computer_scientist)
• http://www.nga.org/Images/AM07SAT09HIRES.JPG
• All others purchased through iStockPhoto.com