In the Friday training I am going to introduce CouchBase Server, a NoSQL (Not only SQL, document oriented) database and outline differences to Apache CouchDB. We're going through a quick setup of the CouchBase Server and the basics of CouchDB document design. I will show some real world examples, followed by a discussion. Who is Patrick Heneise? Patrick is the Founder & CEO of desentia. He achieved a MSc in Media Technology and BSc in Computer Science in Media. Ever since he has improved social interaction and media with creative and professional technology solutions. He started his first business in 2006 during his studies in the fields of eLearning and web technologies and worked for various companies and universities in eCommerce, telecommunications and research & development.

1. GETTING COMFORTABLE WITH
Patrick Heneise, @PatrickHeneise

2. About.Me/PatrickHeneise
Information Architect / Consultant
MSc. in Media Technology, Leiden University, NL
BSc. in Computer Science in Media, Furtwangen University, DE
Certified Software Engineer
♥ node.js, , NoSQL
2 years CouchDB/Couchbase experience

3. AGENDA

4. Agenda
Introduction to Couchbase
Introduction to Document Design and Best Practices
Introduction to Views (Map, Reduce)
Introduction to memcached
Use Cases
Q&A

5. Not on the Agenda
Cluster Design
Deployment
Security
Advanced Document Design
Buckets/vBuckets

7. Couchbase Server
CouchDB memcached
JSON Documents In-memory key-value store
Indexing and Querying Sub-millisecond latency
Map/Reduce Distributed

8. Couchbase Server
Auto-Sharding (dynamically add new servers)
Management and monitoring
Data replication with auto-failover
Mobile synchronization

9. WHY NOSQL?

11. Why NoSQL?
No schema required
Interactive database engineering
Organic growth
Document/Object related

12. CouchDB

13. Use Cases
Information storage
Catalogues
Document-based information

14. How does it look like?
Key Value
{
“title”: “Barcelona”, Strings
“state”: “Catalonia”,
“tagline”: “Best place to live in Europe”,
“population”: 1621537,
Arrays “tags”: [
Numbers
“gaudi”, “sagrada familia”, “beach”, “sun”
],
“startups”: { Objects
Nested “itnig”: {
Objects “tagline”: “Make it happen”,
“tags”: [“web development”, “marketing”]
},
“desentia”: {
“tagline”: “design to go.”,
“tags”: [“design”, “mobile”, “commerce”]
}
}
}

15. How to interact with data?
city.title => “Barcelona”
city.tags => [“gaudi”, “sagrada
familia”, “beach”,
“sun”]
city.tags[4] => “gaudi”
city.startups.desentia.tagline => “design to go.”

16. Where’s SELECT?
Map/Reduce Views
JavaScript or Erlang
Spatial Views

17. Views
function (doc, meta) {
if(doc.jsonType == 'city') {
emit(doc.title, doc.tagline);
}
}

18. - {
- total_rows: 3,
- rows:
[
-
{
- id: "barcelona",
- key: "Barcelona",
- value: "Best place to live in Europe"
- },
-
{
- id: "berlin",
- key: "Berlin",
- value: "Beer and Startups"
- },
-
{
- id: "london",
- key: "London",
- value: "Bloody Rainy"
- }
- ]
- }

19. View all tags
function (doc, meta) {
if(doc.jsonType == 'city') {
doc.tags.forEach(function(tag) {
emit(tag, doc.title);
});
}
}

20. - {
- total_rows: 12,
- rows:
[
-
{
- id: "barcelona",
- key: "beach",
- value: "Barcelona"
- },
-
{
- id: "berlin",
- key: "brandenburg gate",
- value: "Berlin"
- },
-
{
- id: "berlin",
- key: "cold",
- value: "Berlin"
- },
-
{
id: "berlin",
-
- key: "DDR",
- value: "Berlin"
- },...

21. JOINS
function (doc, meta) {
if(doc.jsonType == "startup") {
emit([doc.city, 1], doc.title);
} else if(doc.jsonType == "city") {
emit([meta.id, 0], doc.title);
}
}

22. ["barcelona",0] barcelona "Barcelona"
["barcelona",1] desentia "desentia"
["barcelona",1] itnig "itnig"
["berlin",0] berlin "Berlin"
["berlin",1] soundcloud "soundcloud"
["london",0] london "London"

23. MAP/REDUCE
function (doc, meta) {
if(doc.jsonType == "startup") {
emit(doc.city, 1);
}
}
_count

24. group_level 0 group_level 1
- {
- rows:
[
- {
-
- rows:
{
[
- key: "barcelona",
-
- value: 2
{
- },
- key: null, -
- value: 3
{
- } - key: "berlin",
- ]
- value: 1
- } - }
- ]
- }

25. memcached

26. Use Cases
Session Store
Always and fast changing data (user activity)
Stock exchange data
Game states

27. Pure key-value store
c.set("foo", "bar")
c.set("foo", "bar", :ttl => 30)
c["foo"] = "bar"
c.set("foo", 1)
c.incr("foo") #=> 2
c.incr("foo", :delta => 2) #=> 4
c.incr("foo", 4) #=> 8
c.incr("foo", -1) #=> 7

28. Examples
user:patrick:id => 1
user:patrick:lastPage => ‘/account’
farmhill:currentPlants => 5
farmhill:nextAvailablePlant => ‘Sunflower’
sess:abc:username => ‘patrick’
global:nextUserId => 15

29. DEMO

31. WHERE CAN I USE
COUCHBASE?

32. Use Cases
eCommerce Systems Products, Location Information
Products, Session, Users, Sales, ... Social Information Systems /
Business Intranets
Q/A Systems
Timesheets, Project information
Store a document per user with
questions and answers Wiki / CMS / Blog
History Databases Articles, Pages, ...
Ancient Books, letters, Gaming Systems
transcriptions, ...
Game states, user data
mCommerce Systems
...

33. Additional Information
couchbase.com / @couchbase / @jchris / @janl
couchbasemodels.com / @scalabl3
couchbase.com/docs/couchbase-manual-2.0/
couchbase.com/couchconf-berlin - CouchConf Berlin, Oct 30

34. Q&A

35. JOIN US ON MEETUP:
THE-BARCELONA-COUCHBASE-GROUP

36. THANK YOU!