social apps & social scalability

Matias PaterliniAltodot

Social AppsAnd Social Scalability

We’re hiring!

Tuesday, December 6, 11

<?php echo “Hola Mundo!!!”; ?>

about me...

• CTO & Co-founder at Altodot (creators of The Fan Machine)

• Former CTO & Co-founder at Virtualinmobiliario.com

• Former CTO & Co-founder at Xristianos Producciones

• Jóven Empresario Bonaerense 2008

• Head at Emprendedores Cristianos

What we do

Social Apps!!!

What???

Web or desktop applications connected

to Social Networks

Which social Networks?

Foursquare

Twitter

Sonico

Hi5Google

Facebook

Google +

Most Annoying API award?

Some Facts...

Twitter

• 500K users in Argentina

• 0,56 % of users produce 50% of the content.

• The majority uses SmartPhones

• Users with more than 10 friends: 60%

• Users with more than 130 friends (media at Facebook), 20%.

Open Social

• 1,6 Billion Users world wide (several times duplicated people)

• 100x “Social networks” implemented

• Orkut still leading at Brazil

• Just launched Open Social 2

Facebook

• 750+ MM Users

• +18 Million in Argentina (85% penetration)

• +1 M Active Users in Argentina in May

• 50% of active users login every day

• average user has 130 friends

• Billion dollars business

• devs from 190 countries

• 20 million installs every day

• 250 million uses FB Connect every day

• 10K websites integrated every day

• 900 million open graph objects

• 70 translations

What can we do?

Twitter

Real Stream API

Search API

REST API

Any limits?

350 Authorized Requests per hour

Deal with it...

Some Samples

THE Social Network

Facebook

Social Graph

THE Platform

REST API

Graph API explorer

Javascript SDK (FB Connect)

Social Plugins

ADS API

Graph APIFacebook Credits

Places API

THE Protocol

Open Graph

Graph API

Objects Reference

Objects Handling:

POST, GET, DELETE

Public info, private info

Objects Connections

REST Api

Javascript SDK

Ads API

Social Channels

Canvas Page

FanPage Tabs (apps)

Feed Stories on Walls

Facebook Connect

Otras ideas...

Social Plugins

Like Box

Like and Send Button

Live Stream

Comments Box

Social Scalability

The Fan MachineScalability

The Friendfeed approach

Horizontal Scalability

Database 1

Web Server 1 Web Server 2 Web Server 3

Static File Caching

Database 1

(replicated DB)

Data Caching

What about the DB?

MasterDatabase

Web Server 1

Web Server 2

Web Server 3

Static File Caching

SlaveDatabase

Slave Database

(Transaccional, read-write)

(read) (read)

Data Caching

DB scalling issues...

• MAAAAANY Records

• Caching not enough

• Alters lock tables for hours!

• Maintenance Issues

• Que haces si se corrompe la base porque alguien se engancha el cable de la luz con el pié???

Possible solutions...

CassandraMongoDB

Hipertable

NoSQL SimpleDB

CouchDB

Membase

BigData

RaptorDB

NoSQL = No Trust!

THE approach

Sharded MySQL databases

MySQL emulating NoSQL over Sharded

Databases

If( MySQL == NoSQL) { die(‘WTF???’);}

Documents = Entities

One Table for entities, many tables for

indexes.

How does it look like?

Databases Server 1

Web Server 2

Shard 1Shard 2Shard 3

Web Server 1

Web Server 3

File Caching

Database Backups

Data Caching

} Databases

Web Server 1

Web Server 2

Web Server 3

Static File Caching

Database Backups per Shard

THE Benefits...

• Server maintenance per shard

• Data Maintenance Per shard

• NO table alters

• Easy recovery

• Easy scalability

• Easy migration to other No-SQL data engines

Questions?

Matias Paterlinimatias@altodot.com@paterlinimatias

We’re hiring!!!Tuesday, December 6, 11

social apps & social scalability

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