scaling LAMPdoesn’t have to

suck!@stevencorona

(800 million api calls/day)

let’s learn how to scale php

!

...in 40 minutes

LAMPLINUX

APACHEMYSQL

PHP

a better LAMPLINUX +TUNING

NGINXPHP-FPM

PERCONA

NSQREDIS

nginx loadbalancer

nginx php-fpm

MySQL Master

nginx php-fpm

nginx php-fpm

nsq

MySQL Slavecache

MySQL Slave

tuning linux•linux is mostly sane •use latest kernel •distro doesn’t matter •(i like ubuntu)

top 3 settingsopen_files

network/sysctl tuning i/o scheduler

!

most settings you find online are outdated

open filesdefault is 1024

on linux, each socket = open file !

/etc/security/limits.conf!soft nofile 65535!hard nofile 65535

sysctl tuning!

thousands of settings newer kernels autotune network

!

/etc/sysctl.conf!net.core.somaxconn=65536!

net.ipv4.ip_local_port_range=2000 62000!

i/o schedulerlinux has swappable scheduler

default is cfq !

$ echo “deadline” > \!/sys/block/sda/queue/scheduler

!

+50% IOPS on MySQL

nginxopen-source HTTP server

swap out apache easy + sane config

nginx.org

nginxmost popular webserver

of top 1000 sites !

15,000 requests/second with 20% CPU and100MB RAM

nginx

nginxload balancer http cache

fastcgi proxy web server

php

php-fpm is king standard with php5.3

php-fpmuse static worker pool

4x number of CPU cores !

pm=static!pm.max_children=128

phpphp 5.5 is much faster

than 5.4 and 5.3 !

USE IT!

php!

php 5.5 includes Zend Opcache

(no more APC) !

10-20% faster than APC in real world

php

horizontal scaling watch out for sessions!

php + mysqlmysql persistent

connections are GOOD to use.

!

despite what the internet says

percona!

open source mysql fork !

patches from twitter and google

percona.com

perconadrop-in replacement

!

faster at scale, more reliable

percona

new transactions per minute (more is better)

percona•only use innodb •disable query cache •enable thread pool

thread_handling=pool-of-threads!

perconastop wasting time

use SSDs !

redisin the old days, we used

memcache !

redis is better !

redis.io

redis•data persisted to disk •hot cache •500,000 GET/second

redisconfig is great out of box

!

avoid stalls on EC2 use HVM instances

redislots of php libraries

!

use pecl-redis c extension

pecl install redis

nsqmessage queue server in golang by

bit.ly !

we use it to process 800 million events/day

!

https://github.com/bitly/nsq

nsq•nsqphp is best php library •pub/sub model •do work async •api calls •defer long-running work

!

https://github.com/davegardnerisme/nsqphp

nsq

nsq

DON’T USE MYSQL AS A WORK QUEUE!

don’t scale code!

your code is fast enough !

scale infrastructure

thanks!check out my book—

SCALING PHP

http://scalingphpbook.com