This document discusses how Calciomercato.com scaled their Symfony application to handle millions of users and page views per month. It describes how they moved to Symfony 1.4 in 2010 and deployed revisions to scale the site. It also details techniques used to scale Symfony applications horizontally and vertically, such as caching, load balancing, master-slave databases, and monitoring tools.

1. Symfony e grandi numeri
Si...può...fare!
Daniel Londero
daniel.londero@sth.it

2. Chi sono
Daniel Londero
➢ Sviluppatore PHP dal 2005 @
➢ (s|S)ymfony framework
➢ PUG Friuli
➢ Runner

3. 2M
500k
5M 300k
10k 10M
200k
50k 100k

4. Calciomercato.com: la storia
➢ Nasce nel 1996
➢ Nel 2006 arriva in STH
➢ Nel 2010 si passa a symfony 1.4
➢ 12 aprile 2010 revision 1
➢ 10 giugno 2010: deploy (22 ore)

5. I numeri
UTENTI UNICI PAGINE VISTE
AL MESE AL MESE
AGOSTO 2010 3,6M 36M
GENNAIO 2011 3,3M 32M
MARZO 2011 2,2M 28M

6. Perchè symfony?
➢ Opensource
➢ Community
➢ Documentato
➢ Test
➢ Best practice (MVC / DRY / KISS / ...)

9. #GAC

10. APPLICATION
LOAD BALANCER
MEMCACHED MEMCACHED
BE
NGINX 1 NGINX N
NGINX 1 NGINX N
PHP FCGI PHP FCGI
APC APC
DATA
LOAD BALANCER
NFS
MASTER SLAVE ... SLAVE
DB DB1 DBN

11. LOAD BALANCER
MEMCACHED MEMCACHED
BE
NGINX 1 NGINX N
NGINX 1 NGINX N
PHP FCGI PHP FCGI
APC APC
LOAD BALANCER
NFS
MASTER SLAVE ... SLAVE
DB DB1 DBN

12. Scalare: orizzontale vs verticale
Orizzontale
➢ Aggiungo macchine
➢ Aumenta complessità
➢ Costi e rischi più bassi
Verticale
➢ Aggiungo risorse
➢ Bassa complessità
➢ Costi e rischi elevati

13. Gestione delle sessioni
➢ Balancer persistenti
➢ NFS (sconsigliato)
➢ Database
➢ Memcached (Redis dalla 2.4)

14. LOAD BALANCER
MEMCACHED MEMCACHED
BE
NGINX 1 NGINX N
NGINX 1 NGINX N
PHP FCGI PHP FCGI
APC APC
LOAD BALANCER
NFS
MASTER SLAVE ... SLAVE
DB DB1 DBN

15. Cache storage system
➢ SfFileCache (default)
➢ SfAPCCache
➢ SfEAcceleratorCache
➢ SfMemcacheCache
➢ SfSQLiteCache
➢ sfXCacheCache

16. “There are only two hard things in Computer
Science: cache invalidation and naming things”
- Phil Karlton

17. Cache pagina

18. Cache Partial e Component

19. Contatori
Sfruttare la velocità di accesso alla memoria per
sollevare i database da operazioni inutili.
➢ Impression sui banner
➢ Letture articoli
➢ Voti per i sondaggi

20. LOAD BALANCER
MEMCACHED MEMCACHED
BE
NGINX 1 NGINX N
NGINX 1 NGINX N
PHP FCGI PHP FCGI
APC APC
LOAD BALANCER
NFS
MASTER SLAVE ... SLAVE
DB DB1 DBN

21. LOAD BALANCER
MEMCACHED MEMCACHED
BE
NGINX 1 NGINX N
NGINX 1 NGINX N
PHP FCGI PHP FCGI
APC APC
LOAD BALANCER
NFS
MASTER SLAVE ... SLAVE
DB DB1 DBN

22. sfMasterSlavePlugin
all:
master:
class: sfDoctrineDatabase
param:
dsn: mysql:dbname=database;host:master.example.com
username: root
password: ~
slave:
class: sfDoctrineDatabase
param:
dsn: mysql:dbname=database;host:slave.example.com
username: root
password: ~
dev:
master: &master
class: sfDoctrineDatabase
param:
dsn: mysql:dbname=database;host=localhost
username: root
password: ~
slave: *master

23. Strumenti utili
➢ Web debug toolbar
➢ Slow query log
➢ Explain
➢ Live on stage (and dev)

24. LOAD BALANCER
MEMCACHED MEMCACHED
BE
NGINX 1 NGINX N
NGINX 1 NGINX N
PHP FCGI PHP FCGI
APC APC
LOAD BALANCER
NFS
MASTER SLAVE ... SLAVE
DB DB1 DBN

25. LOAD BALANCER
MEMCACHED MEMCACHED
BE
NGINX 1 NGINX N
NGINX 1 NGINX N
PHP FCGI PHP FCGI
APC APC
LOAD BALANCER
NFS
MASTER SLAVE ... SLAVE
DB DB1 DBN

27. Credits e link
http://www.flickr.com/photos/theplanetdotcom/4879419788
http://www.php.net/manual/en/book.memcache.php
http://www.symfony-project.org/reference/1_4/en/05-Factories
http://www.symfony-project.org/gentle-introduction/1_4/en/12-Caching
http://www.symfony-project.org/jobeet/1_4/Doctrine/en/21
http://www.symfony-project.org/plugins/sfDoctrineMasterSlavePlugin
http://dev.mysql.com/doc/refman/5.6/en/slow-query-log.html
http://dev.mysql.com/doc/refman/5.6/en/explain.html

28. Grazie. Attendo feedback...
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http://joind.in/3024
Contattatemi
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