Internet Apps powered by NoSQL and JavaScript

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A new collaborative way to develop
Internet Apps powered by NoSQL and
Javascript
Luca ...

Agenda
(1) Developing Web App today

(2) Goal: reduce complexity
...

Can you remember when developing
Applications was simpler?

Client ...

Can you remember when developing
Applications was simpler?

Client ...

Why today are more similar to this?
Client Client Client ...

Mainly because the Internet

100x clients!
From few tens of
...

Mainly because the Internet

Response Times:
Network connection is not anymore
the bottleneck...

Mainly because the Internet

Big Data:
databases from
...

How many languages are you using?
Client Client Client ...

How many languages are you using?
Client Client Client ...

Managing complex architecture is
very costly because:

-(1) requires very skilled people,
...

and...........................

(c) Luca Garulli Licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported...

Sometimes the tuning takes
Developing WebApps
more time than developing*!

*...

Do we really need this level
of complexity to scale up?

(c) Luca Garulli Licensed under a Crea...

Main features

(c) Luca Garulli Licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License Page 15

OrientDB, the multi-model
NoSQL = {
flexibility of Document databases
...

+14 years
of research

(c) Luca Garulli Licensed under a Creative Commons Attribution-N...

+4 years
of design and development

(c) Luca Garulli Licensed under a Creative Commons Attribution-NoDerivs ...

Ø config
download, unzip, run!
cut & paste the db directory
(c) Luca Garulli Licensed under a Creative ...

150,000 records per second
(flat records, no index, on commodity hw)

(c) Luca Garulli Lic...

Schema-less
schema is not mandatory, relaxed model,
collect heterogeneous documents all together

(c) Luca Garulli Lic...

Schema-full
schema with constraints on fields and validation rules

Customer.age > 17
...

Schema-mixed
schema with mandatory and optional fields + constraints
the best of schema-less and schema-full modes

...

ACID Transactions
db.begin();
try{
// your code
...
db.commit...

Complex types
native support for collections, maps (key/value)
and embedded documents
...

SQL
select * from employee where name like '%Jay%' and status=0

(c) Luca Garulli Licensed under a Creative Commons At...

SQL & relationships
select from Account where address.city.country.name = 'Italy'

select from Acco...

SQL & trees/graphs
select out[label='friend'].in from V where name = 'Luca' and surname = 'Garulli'

select out[@class='kn...

SQL & collections
select from Tree where children contains ( married = true )

sele...

runs
Java
everywhere is available JRE1.6+
...

Language bindings
Java as native

JRuby, PHP, C, C++, Scala, .NET,
...

Born for the Internet
Supports natively HTTP/RESTful protocol
Documents are transferred in JSON

(c) Luca G...

MVRB-Tree index

the best of B+Tree and RB-Tree
...

Security
users and roles, encrypted passwords
fine grain privileges
(similar to what RDBMSs offer)

(c) ...

Cache
You can avoid using 3°party caches
like Memcached

...

Inheritance
OGraphVertex (V)

Person Vehicle
Address : ...

Polymorphic SQL Query
OGraphVertex (V)

Person Vehicle
...

“A graph database is any
storage system
that provides
...

GraphDB handles relationships as a
physical LINK to the record
assigned when the relationship is created

...

This means jumping from a
O(log N) algorithm to a near O(1)

traversing cost is not more ...

OrientDB in the Blueprints micro-benchmark,
on common hw, with a hot cache,
traverses 29...

Now let’s start modelling
A Web App using
OrientDB

(c) Luca Garulli Licensed under a Creative Commons ...

Our simple domain

Address ...

Our simple domain

Address ...

http://localhost:2480/jsdemo/command/sql/select * from Customer

HTTP/RESTful (+ JSON)
...

{ Document‘s unique
'@rid' = ‘#8:0’, ...

{
'@rid' = ‘#8:0’,
'@class' = ‘Customer',
'name' : 'Luca',
'surname' : 'Garulli',
...

{
'@rid' = ‘#8:0’,
'@class' = ‘Customer',
'name' : 'Luca',
'surname' : 'Garulli',
‘orders’ : [ ‘#10:33...

Create a new document of class «Customer»

>curl --basic -u admin:admin localhost:2480/document/jsdemo
-d '{"@cla...

Since OrientDB talks natively
HTTP and JSON

Is it too insane using it directly from the
Web Pages ...

Pros
+ concurrency and response time:
It’s super fast, all happens at the
cl...

Javascript driver example I
<script src="js/orientdb-api.js" type="text/javascript"></script>
<script>
...

Javascript driver example II
Display in a input field the total of orders

var date = $(‘#date’).val(); // jQuery

v...

Cons
- Client-side JS can be easily hacked

- Sometimes it’s not a good idea
writing queri...

Security
To improve security we supported
Record-Level access control

...

Record Level Security
Business Documents
...

Server-Side functions
Let to OrientDB executing Javascript
at the server side. The code of the
...

Server-Side Functions can access to special
objects in context:

db, as the current database instance. This
...

$function user_create( name, roleName ) { var role = db.query("select from ORole where name = ?", roleName ); if( r...$

Server-Side Functions are automatically
published and reachable via HTTP REST.

Example:
http://...

Demo, please

(c) Luca Garulli Licensed under a Creative Commons Attribution-NoDerivs 3.0 Unported License Page 64

OrientDB uses Mozilla Rhino as JS engine

Why Rhino?

+ Rhino allows ...

Fetch plans
Choose what to fetch on query and document loading
Optimizes network latency
...

Fetch plans
Load root + all the orders
...

{
'@rid' = ‘#8:0’,
'@class' = ‘Customer', Fetche...

Future plans
Support debugging via Studio

«Live Objects» by providing a true Object
Oriented i...

Always Free

Open Source Apache 2 license
free for any purposes,
...

www.NuvolaBase.com

The OrientDB company

DB as service Professi...

Network of partners
er ?
pa...

The OrientDB Academy
Course + Certification in
...

Courses
OrientDB OrientDB
for Java developers ...

“OrientDB in Action”
book
by Manning Publications
...

The Vision
The next generation Web Applications are
going to be written in JS that talk
...

The Vision
WWW Mobile Tablet

...

Summary
(1) Reduce complexity
(2) Improve performance removing
layers
...

Q&A
Luca Garulli
Author of ...

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