MongoDB - Ekino PHP

MongoDB – Infos

MongoDB ("humongous")
10gen
2007 – start project
2009 – open source
C++
Licence : GNU AGPL v3.0 (drivers: Apache licence)
Easy, scalability and Big DATA
Geolocalisation

Data

MongoDB

MySQL

SGDB
> databases
> collections
> documents

SGDB
> databases
> tables
> lignes

No structure
Dynamic schema

Structure
Static schema

Data

BSON = Binary JSON
Lightweight, traversable and UTF-8

{
FirstName:
Address:
Children:
{Name:
{Name:
{Name:
{Name:
]
}

"Jonathan",
"15 Wanamassa Point Road",
[
"Michael", Age: 10},
"Jennifer", Age: 8},
"Samantha", Age: 5},
"Elena",
Age: 2}

Key

_id: ObjectId
12 bits :
- 4 bits – Timestamp (Unix)
- 3 bits – ID machine
- 2 bits – ID process
- 3 bits – Count

}

Similar UUID

Example : 52af1a617e0b18d9448b4567 (hexa)

DBRefs

- collection
- _id
- db (optional)

Map reduce
Map : select process per document
Reduce : combining data
function mapFunction() {
emit(this.user_id, this.price);
}
function reduceFunction(keyUserId, valuePrice) {
return Array.sum(valuePrice);
}
db.runCommand({
mapReduce: 'my_collection',
map:
mapFunction,
Reduce: reduceFunction,
out:
'map_reduce_results_collection',
query: { old_date: { $gt: new Date('17/08/2005') } }
})

V8 JavaScript engine

ECMAscript
V8 JavaScript Engine
standardized JSON
strict mode

Installation

$ sudo apt-key adv --keyserver keyserver.ubuntu.com
--recv 7F0CEB10
$ echo 'deb http://downloadsdistro.mongodb.org/repo/debian-sysvinit dist 10gen' |
sudo tee /etc/apt/sources.list.d/mongodb.list
$ sudo apt-get update
$ sudo apt-get install mongodb-10gen
$ sudo /etc/init.d/mongodb {status|start|stop|restart|
reload|force-reload}

Installation

$ mongo
MongoDB shell version 2.4.9
connection to : test
> show databases
default 0.203125GB
test
0.203125GB
local
0.078125GB
reseau 0.203125GB
> use reseau
switched to db reseau
> show collections
network
system.indexes
traffic
> db.traffic.count()
8

MongoDB – Drivers
Client libraries
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C
C++
C#
Go
Erlang
Java
JavaScript
Node.js
Perl
PHP
Python
Ruby
Scala

Community Supported Drivers
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ActionScript3
ColdFusion
D
Dart
Delphi
Groovy
Lips
Lua
Objective C
Ocaml
Opa
PowerShell
R
Smalltalk

http://docs.mongodb.org/ecosystem/drivers/

PHP - installation

$
$
$
$

sudo
sudo
sudo
sudo

apt-get update
apt-get install php5-dev
pecl install mongo
php5enmod mongo

PHP – classes & types

●

MongoClient

●

MongoId

●

MongoDB

●

MongoCode

●

MongoCollection

●

MongoDate

●

MongoCursor

●

MongoRegex

●

MongoBinData

●

MongoInt32

●

MongoInt64

●

MongoDBRef

●

MongoGridFS

●

MongoMinKey

●

MongoGridFSFile

●

MongoMaxKey

●

MongoGridFSCursor

●

MongoTimestamp

PHP – examples

Create
<?php
$someDoc = [
'author'
'content'
'nbComment'
'dateCreated'
];

=>
=>
=>
=>

'ekino',
'mongod',
5,
new MongoDate()

$client = new MongoClient("mongodb://localhost/");
$database = $client->demoDb;
$collection = $database->demoCollection;
$collection->insert($someDoc);
echo (string) $someDoc['_id']; // 52af1a617e0b18d9448b4567

PHP – examples

$ mongo
MongoDB shell version: 2.4.8
connecting to: test
> show databases
demoDb 0.203125GB
local 0.078125GB
> use demoDb
switched to db demoDb
> db.demoCollection.find();
{ "_id" : ObjectId("52af1a617e0b18d9448b4567"), "author" :
"ekino", "content" : "mongod", "nbComment" : 5,
"dateCreated" : ISODate("2013-12-16T15:21:05.212Z") }
> exit
Bye
$ php -r 'var_dump(date("Y-m-d H:i:s",
hexdec("52af1a61")));'
string(19) "2013-12-16 16:21:05"

Installation

$ ls -lGh /var/lib/mongodb
drwxr-xr-x 2 mongodb 4,0K déc.
-rw------- 1 mongodb 64M déc.
-rwxr-xr-x 1 mongodb
5 déc.

16
16
16
16
16

16:21
10:10
10:10
10:10
16:21

journal
local.0
local.ns
mongod.lock
_tmp

PHP – examples

$ ls -lGh /var/lib/mongodb
-rwxr-xr-x 1 mongodb
5 déc.

16
16
16
16
16
16
16
16

16:21
16:21
16:21
16:21
10:10
10:10
10:10
16:21

demoDb.0
demoDb.1
demoDb.ns
journal
local.0
local.ns
mongod.lock
_tmp

PHP – examples

Retrieve
<?php
$collection->findOne(['nbComment' => ['$gt' => 3]];
$cursor = $collection->find();
$cursor->count(); // number of documents
$cursor = $cursor->sort(['author' => 1]);
$cursor = $cursor->limit(10);
foreach ($cursor as $demo) {
// iterator ...
}

PHP – examples

Update
<?php
$query = ["author" => "ekino"];
$newdata = [
'$set' => [
"keywords" => "excellent ta_vu"
]
];
$options = [
'upsert'
=> true,
'multiple' => false,
'j'
=> false // or fsync
];
$collection->update($query, $newdata, $options);

PHP – examples

Delete
<?php
$options = ["justOne" => true, "j" => false];
$collection->remove(['author' => 'ekino'], $options);

Package components

●

mongod : primary daemon process for the MongoDB system

●

mongos : routing service for MongoDB shard

●

mongo : interactive JavaScript shell interface

●

mongodump : creating a binary export

●

mongorestore : writes data from a binary database dump

●

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mongostat : provides a quick overview of the status
similar vmstat
mongoperf : check disk I/O performance independently
of MongoDB

Interface - metric
MMS - 10gen

Interface - GUI
Robomongo

https://github.com/paralect/robomongo

Intégration

SQL et/ou NoSQL ?

Source : http://www.commitstrip.com/en/2012/04/10/what-do-you-mean-its-oversized/

Annexes
Pool-DBM :
PHP Library to create relationships between DBMS.
Work with Doctrine Library.
https://github.com/pokap/pool-dbm

Source images :
http://askdba.org/weblog/images/technical/nosql
http://www.generation-trafic.fr/wp-content/uploads/2012/07/geolocalisation.jpg
http://www.kchodorow.com/blog/wp-content/uploads/2010/03/sharding.png
http://www.commitstrip.com/en/2012/04/10/what-do-you-mean-its-oversized/
http://www.pixelboy.fr/wp-content/uploads/2011/11/Firefox1.png
http://robomongo.org/
http://nyccto.files.wordpress.com/2011/03/mysql_to_mongodb.gif
http://www.elektronique.fr/cours/porte-logique/images/porte-logique-et.png

MongoDB - Ekino PHP

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