Scaling LAMP doesn't have to suck
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Scale PHP Effortlessly— Learn the 80/20 of owning your LAMP stack and get back to coding! I spent a year sleeping next to my laptop, rolling over to restart Apache, as I scaled Twitpic to 50m users. Save your sanity and learn from my mistakes.
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Scaling LAMP doesn't have to suck
- 1. scaling LAMP doesn’t have to suck! @stevencorona (800 million api calls/day)
- 2. let’s learn how to scale php ! ...in 40 minutes
- 4. a better LAMP LINUX +TUNING NGINX PHP-FPM PERCONA NSQ REDIS
- 6. tuning linux •linux is mostly sane •use latest kernel •distro doesn’t matter •(i like ubuntu)
- 7. top 3 settings open_files network/sysctl tuning i/o scheduler ! most settings you find online are outdated
- 8. open files default is 1024 on linux, each socket = open file ! /etc/security/limits.conf! soft nofile 65535! hard nofile 65535
- 9. sysctl tuning! thousands of settings newer kernels autotune network ! /etc/sysctl.conf! net.core.somaxconn=65536! net.ipv4.ip_local_port_range=2000 62000!
- 10. i/o scheduler linux has swappable scheduler default is cfq ! $ echo “deadline” > ! /sys/block/sda/queue/scheduler ! +50% IOPS on MySQL
- 11. nginx open-source HTTP server swap out apache easy + sane config nginx.org
- 12. nginx most popular webserver of top 1000 sites ! 15,000 requests/second with 20% CPU and100MB RAM
- 13. nginx
- 14. nginx load balancer http cache fastcgi proxy web server
- 15. php php-fpm is king standard with php5.3
- 16. php-fpm use static worker pool 4x number of CPU cores ! pm=static! pm.max_children=128
- 17. php php 5.5 is much faster than 5.4 and 5.3 ! USE IT!
- 18. php ! php 5.5 includes Zend Opcache (no more APC) ! 10-20% faster than APC in real world
- 19. php horizontal scaling watch out for sessions!
- 20. php + mysql mysql persistent connections are GOOD to use. ! despite what the internet says
- 21. percona ! open source mysql fork ! patches from twitter and google percona.com
- 22. percona drop-in replacement ! faster at scale, more reliable
- 23. percona new transactions per minute (more is better)
- 24. percona •only use innodb •disable query cache •enable thread pool thread_handling=pool-of-threads!
- 25. percona stop wasting time use SSDs !
- 26. redis in the old days, we used memcache ! redis is better ! redis.io
- 27. redis •data persisted to disk •hot cache •500,000 GET/second
- 28. redis config is great out of box ! avoid stalls on EC2 use HVM instances
- 29. redis lots of php libraries ! use pecl-redis c extension pecl install redis
- 30. nsq message queue server in golang by bit.ly ! we use it to process 800 million events/day ! https://github.com/bitly/nsq
- 31. nsq •nsqphp is best php library •pub/sub model •do work async •api calls •defer long-running work ! https://github.com/davegardnerisme/nsqphp
- 32. nsq
- 33. nsq DON’T USE MYSQL AS A WORK QUEUE!
- 34. don’t scale code ! your code is fast enough ! scale infrastructure
- 35. thanks! check out my book— SCALING PHP http://scalingphpbook.com