Scaling php - Intercon php

Aug 1, 20144 likes1,426 views

This document summarizes techniques for scaling PHP applications. It discusses using the latest PHP version and disabling unnecessary extensions to reduce memory usage. It also covers tuning php.ini settings, using PHP accelerators like APC and OPcache, sharing session data across servers, caching with Memcache, and reverse proxying with Nginx. The presenters are Lucas Arruda and Handrus Nogueira, software architects with experience optimizing PHP applications.

Scaling PHP
Lucas Arruda
lucas@ciandt.com
@lunascarruda
Handrus Nogueira
handrus@taller.net.br
@handrus

Lucas Arruda
Software Architect @ CI&T
Open-Source enthusiast
~10 yrs on the road
Based on Campinas-SP
Zend Certified Engineer PHP 5.3
Drupaler for 4 yrs
Google Cloud Platform Qualified Dev.

Handrus
Software Architect / Dev @ Taller
Open-Source and Agile
~10 yrs on the road
Based on Bauru-SP/Florianópolis-SC
Drupaler for 3 yrs

Disable unnecessary PHP extensions and web-server modules
● PHP extensions consume memory heap
● Some badly written can cause memory leaks
● The same applies for web-server modules
● Disable if you don’t need them!

Fine tune your php.ini!
● memory_limit
memory_get_usage() / memory_get_peak_usage()
● realpath_cache_size
realpath_cache_get()
● realpath_cache_ttl
Max execution per thread - will affect memory usage!

Alternative PHP Cache (APC)
Zend OPcache
XCache

apc.shm_size
apc.ttl
apc.num_files_hint
apc.gc_ttl
apc.max_file_size
apc.stat
APC OPcache
opcache.revalidate_freq
opcache.validate_timestamps
opcache.max_accelerated_files
opcache.memory_consumption
opcache.interned_strings_buffer
opcache.fast_shutdown
XCache
xcache.size
xcache.count
xcache.slots
xcache.ttl
xcache.gc_interval
xcache.cacher
xcache.stat
xcache.var_size
xcache.var_count
xcache.var_slots
xcache.var_ttl
xcache.var_maxttl
xcache.var_gc_interval

Does your app use
session data?
No: you’re good to go!
Yes: then you’ll need to
manage this data across
multiple servers.

Sharing session data
Fault tolerant
No bottleneck
Cheaper
buut… it needs architecure changes!
Persistent load balancing
Sharing session data
PHP Session
Management
Persistent load balacing
Single point of failure
Bottleneck
Expensive

Options
Shared file-system
Database
Memcache / Redis
session.name
session.save_handler
session.save_path
Sharing
session data
Handlers
files
user
memcache

Avoid database specific
queries.
Good libraries can help
(Doctrine FTW!)
If not possible
Document like any
Technical Debt!

And choose well
your database!!
● MySQL
● MariaDB
● PerconaDB
Version?!

How dependent of your actual
environment are you?
timezonepaths connection string
limits
timeouts
Number of triesAPI Keys

APC
for caching user data
Memcache
for key/value storage (URI/HTML?)
tmpfs/ramfs
for all file-based caching

Q&A
ciandt.com
Presentation Deck
http://goo.gl/0cV1KT

THANKS
FOR
BEING
HERE!
Please evaluate this presentation!
http://goo.gl/P8ZDfc
(3 questions only)

@lunascarruda
lunascar@gmail.com
google.com/+LucasArruda
fb.com/lucasnarruda
linkedin.com/in/larruda
github.com/larruda
coderbits.com/larruda
@handrus
handrus@gmail.com
google.com/+HandrusNogueira
fb.com/handrus
linkedin.com/in/handrus
github.com/handrus
coderbits.com/handrus

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Scaling php - Intercon php

1. Scaling PHP Lucas Arruda [email protected] @lunascarruda Handrus Nogueira [email protected] @handrus

2. Lucas Arruda Software Architect @ CI&T Open-Source enthusiast ~10 yrs on the road Based on Campinas-SP Zend Certified Engineer PHP 5.3 Drupaler for 4 yrs Google Cloud Platform Qualified Dev.

3. Handrus Software Architect / Dev @ Taller Open-Source and Agile ~10 yrs on the road Based on Bauru-SP/Florianópolis-SC Drupaler for 3 yrs

4. The Basics

5. Use the latest PHP stable version

6. Use the latest PHP stable version

7. Disable unnecessary PHP extensions and web-server modules ● PHP extensions consume memory heap ● Some badly written can cause memory leaks ● The same applies for web-server modules ● Disable if you don’t need them!

8. Fine tune your php.ini! ● memory_limit memory_get_usage() / memory_get_peak_usage() ● realpath_cache_size realpath_cache_get() ● realpath_cache_ttl Max execution per thread - will affect memory usage!

9. mod_php vs. FastCGI vs. PHP-FPM

10. ob_flush() flush() ?

11. PHP ACCELERATORS

12. Alternative PHP Cache (APC) Zend OPcache XCache

13. apc.shm_size apc.ttl apc.num_files_hint apc.gc_ttl apc.max_file_size apc.stat APC OPcache opcache.revalidate_freq opcache.validate_timestamps opcache.max_accelerated_files opcache.memory_consumption opcache.interned_strings_buffer opcache.fast_shutdown XCache xcache.size xcache.count xcache.slots xcache.ttl xcache.gc_interval xcache.cacher xcache.stat xcache.var_size xcache.var_count xcache.var_slots xcache.var_ttl xcache.var_maxttl xcache.var_gc_interval

15. Zephir

16. Scaling PHP Horizontally

17. Does your app use session data? No: you’re good to go! Yes: then you’ll need to manage this data across multiple servers.

18. Sharing session data Fault tolerant No bottleneck Cheaper buut… it needs architecure changes! Persistent load balancing Sharing session data PHP Session Management Persistent load balacing Single point of failure Bottleneck Expensive

19. Options Shared file-system Database Memcache / Redis session.name session.save_handler session.save_path Sharing session data Handlers files user memcache

20. Avoid database specific queries. Good libraries can help (Doctrine FTW!) If not possible Document like any Technical Debt!

21. And choose well your database!! ● MySQL ● MariaDB ● PerconaDB Version?!

23. How dependent of your actual environment are you? timezonepaths connection string limits timeouts Number of triesAPI Keys

24. Caching Mechanisms

25. APC for caching user data Memcache for key/value storage (URI/HTML?) tmpfs/ramfs for all file-based caching

26. Reverse proxying Nginx Varnish

28. ...

29. Q&A ciandt.com Presentation Deck http://goo.gl/0cV1KT

30. THANKS FOR BEING HERE! Please evaluate this presentation! http://goo.gl/P8ZDfc (3 questions only)

31. @lunascarruda [email protected] google.com/+LucasArruda fb.com/lucasnarruda linkedin.com/in/larruda github.com/larruda coderbits.com/larruda @handrus [email protected] google.com/+HandrusNogueira fb.com/handrus linkedin.com/in/handrus github.com/handrus coderbits.com/handrus

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