1. How to use MongoDB
with CakePHP
2010/9/4
Cakefest2010
Yasushi Ichikawa

2. TOPIC
1. Who am I
2. MongoDB
3. PHP + MongoDB
4. CakePHP + MongoDB

3. Yasushi Ichikawa
Twitter: @ichikaway
Call me ichi

4. My Code
• I've used Cakephp since Aug 2008.
• Author of the SQL Explain Component
→ One of Debug_kit Contributors
• Author of the Cakephp MongoDB-Datasource

5. My Code

My code for Cakephp

http://github.com/ichikaway

6. TOPIC
1. Who am I
2. MongoDB
3. PHP + MongoDB
4. CakePHP + MongoDB

7. MongoDB is
One of NoSQL

8. MongoDB
• Open-source non-relational DB
• C++
• GNU AGPL v3.0
• Many Drivers(PHP, Perl, Ruby, etc)
– Apache License
• Company: 10gen
• Download (version 1.6.2)
– http://www.mongodb.org/display/DOCS/Downloads

9. MongoDB TERMs
RDB MongoDB
Table Collection
Row Document
Column Field

10. MongoDB Position
• Performance
– Key/Value > mongoDB >>> RDBMS
• Functionality
– RDBMS > mongoDB >>> Key/Value

11. MongoDB Provides
• Scalability
• Queryable
• Read/Write FAST
• Schema Free

12. MongoDB Schema
• Document: bson (similar json)
– Binary data
• Schema Free
– different schema in same collection
Id, title, body
Id, name, tel, fax
Id, name, nickname, email
Posts collection

13. MongoDB Schema
• Embedded Object
Posts collection
id: 1, name: ichikaway, tel: 090-1111-2222. fax:
Address skill
Country: Japan, Java: 2years,
Zip: 222-3333 PHP: 3years
id: 2, name: Yasushi, tel: 090-3333-4444. fax:
id: 3, name: Ninjaaa, tel: 090-5555-6666. fax:

14. RDB Schema
• RDB schema
• Natural data structure??
Screen
Blog Blog table Tags table
Title Title Tag1
Text Text Tag2
Tag3
tag1,tag2,tag3 RDB
Comment Table
Comment1
Comment2 Comment1
Comment3 Comment2
Comment3

15. MongoDB schema
• Schema Free
– Natural data structure
Screen
Blog Blog collection
Title Title : xxxx
Text Text : yyyy
tag1,tag2,tag3 Mongo Tag: [tag1,tag2,tag3]
Comment:
[comment1,
Comment1 comment2,
Comment2 comment3
Comment3 ]

16. MongoDB In Production
github, heroku(MongoHQ), etc

17. MongoDB Production Case
• Business insider
• http://www.businessinsider.com/how-we-use-mongodb-2009-11
• Over 600,000 PV / business day
• 3 apache + 1 mongoDB
• MongoDB uses under 5% cpu time

18. MongoDB Fit or Not
Not replace all RDBMS

19. MongoDB Not FIT
• Need Join
• Need Transaction
• Small disk space
– each record has field label data
Posts collection
id: 1, name: ichikaway, tel: 090-1111-2222. fax:
6bytes id: 2, name: Yasushi, Age: 20 . Tel: 111-2222
id: 3, name: Ninjaaa, Language: Japanese

20. MongoDB Fit
• Need Performance
– Read/Write is fast
• Scale out
– Master/Slave
– Replica set(Automatic Failover)
– Sharding

21. How to use

22. MongoDB Retrieving Data
SELECT field1, field2 From blog WHERE field1 = 'aaa';
db.blog.find( { field1 : ”aaa” }, { field1 : 1, field2 : 1 } )
Collection name

23. MongoDB Retrieving Data
SELECT * WHERE field1 > 3
ORDER BY field2 DESC
LIMIT 10, 20;
db.collection.find( { field1 : { $gt:3 } } )
.sort(field2: -1)
.skip(10)
.limit(20);

24. MongoDB find operators
• $gt, $gte
• $lt, $lte
• $ne
• $in
• $nin
• $or
http://www.mongodb.org/display/DOCS/Advanced+Queries

25. MongoDB find tips
• Regular Expressions
– { name : /ichikawa.*sushi/i }
• Embedded Object
– { "author.name" : "ichikawa" }
Blog collection
Title : xxxx
Text : yyyy
author:
{
name : 'ichikawa',
age : 15
}

26. MongoDB
DEMO

27. SQL to Mongo Mapping Chart
http://www.mongodb.org/display/DOCS/SQL+to+Mongo+
Mapping+Chart

28. MongoDB Indexing
Create Index
db.collection.ensureIndex({“title” : 1})
Delete Index
db.collection.dropIndex({“title” : 1})
Create Embedded Doc Index
db.collection.ensureIndex
({“Autor.name” : 1})
Create Index(Background)
db.collection.ensureIndex
({“title” : 1}, {background:true} )

29. Cool Stuffs of MongoDB
Geospatial Index
Capped Collection

30. MongoDB Geospatial Index

Version 1.3.3+ , recommend 1.6.2+ (Bug fix)

Calculate location data
– Latitude(緯度), Longitude(経度)

find the closest location with Operators
– $near: sort from the closest point
– $box: find points within the rectangle
– $center: find points within the circle

31. MongoDB Geospatial Index

Insert data
db.geotest.save({ loc:[ 35, 139 ] })
Latitude Longitude

create Index
db.geotest.ensureIndex( {loc:”2d”} )

32. MongoDB Geospatial Index

Find the point
db.geotest.find({ loc:[35, 140] });

$near
db.geotest.find({ loc:{ $near : [30, 130] } })

33. MongoDB Geospatial Index

$box
– lower left, upper right
db.geotest.find({ loc:{ $within:{ $box:
[[1, 1], [10,10]] }}});

$center
– set radius(degree)
db.geotest.find({ loc:{
$within:{ $center: [[10, 10], 0.1 ] }
radius(degree)
}})

34. MongoDB Geospatial Index
DEMO

35. MongoDB Capped Collection

Creating a Fixed Size (capped) Collection

Not think about data space / overflow
• Age out data is deleted when Collection is full
• Good for
– Logging
– Caching
db.createCollection("testcap1", {capped: true, size:5000});

36. MongoDB Attension

32bit version limitation
–can't save data over 2Gbytes

37. MongoDB Books
http://www.mongodb.org/display/DOCS/Books

38. TOPIC
1. Who am I
2. MongoDB
3. PHP + MongoDB
4. CakePHP + MongoDB

39. Pecl Mongo Driver
• Apache License
• Setup
pecl install mongo
extension=mongo.so (php.ini)
• Manual
–http://us2.php.net/mongo

40. Pecl Mongo
• Connect
$mongo = new Mongo(localhost:27017);
$db = $mongo->selectDB('blog');
• select collection
$collection = $db->selectCollection('posts');
• Find
$collection->find($cond, $filed)
->sort()->limit(5)->skip();

41. Pecl Mongo
$data = array('field1' => 'val1',
'field2' => 'val2');
• Insert
$collection->insert($data);
• Update
$new = array('$set' => array('field2' => 'aa'));
$cond = array('field1' => 'val1');
$collection->update($cond, $new);

42. TOPIC
1. Who am I
2. MongoDB
3. PHP + MongoDB
4. CakePHP + MongoDB

43. MongoDB Datasource

Developed since Jan, 2010

PHP5+

Pecl Mongo

CakePHP1.2+
– Recommend Cake1.3

44. MongoDB Datasource

Version 0.3
– set schema info to Model::schema
– test cases

Version 0.4
– create schema info from Post data
– show command log
Huge Thanks AD7six

45. Cake Datasource

The link between models and the
source(DB)

Transparency
– Use Mongo from Model methods
– connect to MongoDB and use
collection automatically

46. Cake calls Datasource methods
Model Method Datasource
find() read()
save() create()
save() update()
delete() delete()

47. Let's use

48. Setup

cd app/plugins

git clone
http://github.com/ichikaway/mongoDB-
Datasource.git mongodb

cd app/config

vi database.php

49. database.php
<?php
class DATABASE_CONFIG {
public $default = array(
'driver' => 'mongodb.mongodbSource',
'database' => 'cakemongo1',
'host' => 'localhost',
'port' => 27017,
);

50. Sample Cake Mongo
DEMO
Sample1

51. Sample2

52. Sample Cake Mongo part 2

Delete History

Main data is stored in MySQL

save deleted records in history table

search history records

53. Sample Cake Mongo part 2
MySQL
App Default Schema
CakePHP
Post table User table

54. Sample Cake Mongo part 2

RDB way

copy schema(all table)

55. Sample Cake Mongo part 2
MySQL
App Default Schema
CakePHP
Post table User table
1. Delete
Copy Schema
Post table User table
2. save

56. Sample Cake Mongo part 2

RDB way

copy schema(all table)

Hard to maintain both schema

serialize deleted record, save in history table

Hard to search in history table

57. Sample Cake Mongo 2
Mongo Way

58. Sample Cake Mongo part 2
MySQL
App Default Schema
CakePHP
Post table User table
1. Delete
MongoDB
History Collection
{'post' : Post record}
2. save {'user' : User record}

59. Sample Cake Mongo 2
DEMO

60. Sample Cake Mongo 2

Good Fit Document Database
– save different table records in one collection

Don't need prepare schema before Save

Search easily in History Collection

61. Summary

MongoDB
- Good case
- Query
- Geospatial Index
- Capped Collection

PHP + MongoDB

CakePHP + MongoDB

62. Thank you!
Questions?
Please, speak slowly :)