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...
Votate questo talk
http://joind.in/3024
Contattatemi
daniel.londero@sth.it | @dlondero | phpblog.it