Rolling Up Your Sleeves

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These are slides from a class I presented alumni and incoming students at the Austin Center for Design. The goal was to provide an over view of software application development (architecture, languages, frameworks), how to augment your development with other people of shops, and some basic techniques for scaling up.

Tecnología

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Rolling Up Your Sleeves
jesse@thesourcespring.com
www.thesourcespring.com
1

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Class Structure
Part 1 - Options: A whirlwind tour of languages and frameworks (30 mins)
Part 2 - Help: Getting development assistance and managing it (30 mins)
Part 3 - Scaling: Success is a risk (30 mins)
Part 4 - Q&A: Pick my brain (30 mins?)
2

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
About Me
3

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Who Are You?
Introduce yourself.
What experience in software development do you already have?
What are you hoping to get out of today?
4

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
{let’s do this}
5

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Options
A whirlwind tour of languages and frameworks
6

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Architecture for client/server apps
7

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Languages
Client-side vs Server-side
Interpreted vs Compiled
8

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Languages
Perl
PHP
Javascript (client-side)
Node.js (server-side Javascript)
Java
Python
Ruby
C / C++ / Objective C
C#
9

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Frameworks: terminology
What is a framework?
DRY (Don’t Repeat Yourself)
MVC (Model–View–Controller)
ORM (Object Relational Model)
Front Pattern (Routes)
10

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Frameworks: server-side
Ruby on Rails
PHP + Symphony
PHP + Wordpress
Python + Django
Node.js + Express.js
Java + Spring/Hibernate/EE/???
C# + .Net
11

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Frameworks: client-side
Javascript + JQuery / Ember / Angular
Objective C + iOS SDK
Java + Android SDK
12

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Frameworks: mobile hybrids
HTML5 in a wrapper
PhoneGap
Titanium
Adobe AIR
13

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Databases
SQL
Postgres, MySQL, Oracle
NoSQL
Mongo, Couch, Cassandra
Keystore
Memcache, Redis
14

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Hosting
Bare Metal
Rack ’em up
Virtual Servers
Rackspace, Amazon
App Platforms
Heroku, Appfog, Railyard
15

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Considerations
Performance (Speed vs Latency)
Agility
Maintainability
Cost of ownership
Owning your platform
What you know
What you can learn
Where you can learn it from
Your developers’ knowledge
Ease of finding developers
16

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
{breathe}
17

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Help
Getting development assistance and managing it
18

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Options
DIY
Technical Co-Founder
Hiring FTEs
Hiring Contractors
Outsourcing
(NB: This may or may not mean offshoring)
Volunteers
Open Source
19

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Considerations
What you can offer: cash vs equity
Your savviness
Your ability to manage
Need for agility (how much work can you do
up front?)
20

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Agreements
Statement of work
Intellectual property
Equity or cash
Warranty and maintenance
Handling disputes
Documentation
21

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Finding Developers
Friends, LinkedIn and Facebook
AngelList, GitHub
ODesk, Guru, VWorker, ELance
Head hunters
Craigslist
22

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Process
Agile / Scrum
The sprint cycle
Writing stories and documenting them
Velocity and points
Test Driven Development
Behavior Driven Development
23

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Version Control
Why?
SVN vs Git
Github, Mercurial, Bitbucket, Sourceforge
24

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
QA
Painful: they will not do it all for you
Bug tracking
Automated testing
Continuous integration
25

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
{breathe}
26

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Scaling
Success is a risk
27

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Serving Assets
Minification
CDNs - Content Distribution Networks
28

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Caches
Browser Caching
Page Caching
Fragment Caching
Data Caching (memory, Memcache, Redis)
In-database Caching
29

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Background Tasks
Why do now what you can do later?
30

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
More Concurrency
Remember hosting?
Bare metal: add more servers behind a
load balancer
Virtual servers: add more virtual servers
behind a virtual load balancer
App platforms: press a button (in theory)
Failover
Geographic redundancy
Sticky Sessions
31

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Database
Add indices
(or remove them)
Find and optimize slow queries
Avoid the N+1 problem
Eager loading
Add databases:
Master and slave (and slave and slave)
Clusters
Vertical partitioning
Horizontal partitioning (sharding)
32

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Case Study
Instagram
http://www.slideshare.net/iammutex/scaling-instagram
33

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
{breathe}
34

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Want more?
Startup Engineering: https://www.coursera.org/course/startup
UT on Rails: http://schneems.com/ut-rails
Contact me and ask about deep dives on other topics:
HTML, CSS, SQL, Rails, PHP, Wordpress, payment processing...?
35

source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed
Thanks! Any questions?
jesse@thesourcespring.com
www.thesourcespring.com
Liked this class? Please connect with me on LinkedIn and endorse me for teaching!
http://www.linkedin.com/in/jessejack
36

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Rolling Up Your Sleeves

1. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Rolling Up Your Sleeves jesse@thesourcespring.com www.thesourcespring.com 1

2. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Class Structure Part 1 - Options: A whirlwind tour of languages and frameworks (30 mins) Part 2 - Help: Getting development assistance and managing it (30 mins) Part 3 - Scaling: Success is a risk (30 mins) Part 4 - Q&A: Pick my brain (30 mins?) 2

3. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed About Me 3

4. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Who Are You? Introduce yourself. What experience in software development do you already have? What are you hoping to get out of today? 4

5. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed {let’s do this} 5

6. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Options A whirlwind tour of languages and frameworks 6

7. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Architecture for client/server apps 7

8. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Languages Client-side vs Server-side Interpreted vs Compiled 8

9. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Languages Perl PHP Javascript (client-side) Node.js (server-side Javascript) Java Python Ruby C / C++ / Objective C C# 9

10. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Frameworks: terminology What is a framework? DRY (Don’t Repeat Yourself) MVC (Model–View–Controller) ORM (Object Relational Model) Front Pattern (Routes) 10

11. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Frameworks: server-side Ruby on Rails PHP + Symphony PHP + Wordpress Python + Django Node.js + Express.js Java + Spring/Hibernate/EE/??? C# + .Net 11

12. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Frameworks: client-side Javascript + JQuery / Ember / Angular Objective C + iOS SDK Java + Android SDK 12

13. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Frameworks: mobile hybrids HTML5 in a wrapper PhoneGap Titanium Adobe AIR 13

14. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Databases SQL Postgres, MySQL, Oracle NoSQL Mongo, Couch, Cassandra Keystore Memcache, Redis 14

15. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Hosting Bare Metal Rack ’em up Virtual Servers Rackspace, Amazon App Platforms Heroku, Appfog, Railyard 15

16. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Considerations Performance (Speed vs Latency) Agility Maintainability Cost of ownership Owning your platform What you know What you can learn Where you can learn it from Your developers’ knowledge Ease of finding developers 16

17. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed {breathe} 17

18. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Help Getting development assistance and managing it 18

19. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Options DIY Technical Co-Founder Hiring FTEs Hiring Contractors Outsourcing (NB: This may or may not mean offshoring) Volunteers Open Source 19

20. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Considerations What you can offer: cash vs equity Your savviness Your ability to manage Need for agility (how much work can you do up front?) 20

21. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Agreements Statement of work Intellectual property Equity or cash Warranty and maintenance Handling disputes Documentation 21

22. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Finding Developers Friends, LinkedIn and Facebook AngelList, GitHub ODesk, Guru, VWorker, ELance Head hunters Craigslist 22

23. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Process Agile / Scrum The sprint cycle Writing stories and documenting them Velocity and points Test Driven Development Behavior Driven Development 23

24. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Version Control Why? SVN vs Git Github, Mercurial, Bitbucket, Sourceforge 24

25. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed QA Painful: they will not do it all for you Bug tracking Automated testing Continuous integration 25

26. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed {breathe} 26

27. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Scaling Success is a risk 27

28. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Serving Assets Minification CDNs - Content Distribution Networks 28

29. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Caches Browser Caching Page Caching Fragment Caching Data Caching (memory, Memcache, Redis) In-database Caching 29

30. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Background Tasks Why do now what you can do later? 30

31. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed More Concurrency Remember hosting? Bare metal: add more servers behind a load balancer Virtual servers: add more virtual servers behind a virtual load balancer App platforms: press a button (in theory) Failover Geographic redundancy Sticky Sessions 31

32. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Database Add indices (or remove them) Find and optimize slow queries Avoid the N+1 problem Eager loading Add databases: Master and slave (and slave and slave) Clusters Vertical partitioning Horizontal partitioning (sharding) 32

33. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Case Study Instagram http://www.slideshare.net/iammutex/scaling-instagram 33

34. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed {breathe} 34

35. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Want more? Startup Engineering: https://www.coursera.org/course/startup UT on Rails: http://schneems.com/ut-rails Contact me and ask about deep dives on other topics: HTML, CSS, SQL, Rails, PHP, Wordpress, payment processing...? 35

36. source spring — jesse jack — jesse@thesourcespring.com — 2013 CC licensed Thanks! Any questions? jesse@thesourcespring.com www.thesourcespring.com Liked this class? Please connect with me on LinkedIn and endorse me for teaching! http://www.linkedin.com/in/jessejack 36

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