Scaling PHP web apps
1 like937 views
Scale your PHP web app to get ready for the peak season. Useful information you might want to consider before scaling your application. Slides as presented in my talk at PHP conference Australia in April 2016
Ad
More Related Content
What's hot (19)
Similar to Scaling PHP web apps (20)
Ad
More from Harald Zeitlhofer (10)
Ad
Recently uploaded (20)
Scaling PHP web apps
- 2. Harald Zeitlhofer • Technology Strategist at Dynatrace • Database and Web Development • Love to discover new things
- 15. Scalability is more • Create well sized environment • Ensure high availability • Ensure high performance • Handle large number of transactions • Respond to changed load conditions • Respond to feature requests • Find and fix problems fast
- 16. ?
- 17. Bad News PHP is slower than Java
- 18. PHP is not the bottleneck Good News
- 20. Prepare to scale • Break your application down into smaller components • Frontend • Load Balancer • Web Server • Caching Server • PHP engine • Database • Avoid bottlenecks • Reduce load
- 24. Load balancing upstream php { ip_hash; server unix:/var/run/php5-fpm.sock weight=5; server 192.168.56.12:9000 weight=2; server 192.168.56.13:9000; server 192.168.56.14:9000; server 192.168.58.21:9000 backup; } server { listen 80; root /var/www/mysite; server_name www.mysite.com; location / { try_files $uri =405; } location ~ .php$ { fastcgi_pass php; fastcgi_index index.php; include fastcgi_params; } }
- 26. Optimize first ?
- 31. PHP tier represents a major global bottleneck for page load times Example: Performance hotspot PHP execution
- 32. lessc CSS preprocessor social login module slow PHP execution Major performance hotspots
- 34. server-side calls to unused external services Social Login Module
- 35. average contribution of PHP compilation time Slow PHP execution? Outdated PHP version?
- 47. Database Access • Size server (cluster) appropriately for maximum number of connected instances • Reduce connections • Reduce SQL statements • Leverage caching
- 51. Varnish
- 52. Varnish
- 53. Nginx FastCGI cache • Part of Nginx' FastCGI module fastcgi_cache_path /etc/nginx/cache levels=1:2 keys_zone=APPKEY:100m inactive=60m; fastcgi_cache_key "$scheme$request_method$host$request_uri"; location ~* .php$ { fastcgi_index index.php; fastcgi_pass 127.0.0.1:9000; include fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param SCRIPT_NAME $fastcgi_script_name; fastcgi_cache APPKEY; fastcgi_cache_valid 200 60m; }
- 56. Data cache with Memcached <?php ... function __construct () { $this->c = new Memcached(); $this->c->addServer('memcached.server',11211); } function setCache ($key, $content) { $this->c->set($key, $content); } ... // get data structure $this->setCache('/gis/cave/getGeoJSON/'.$this->id, $this->getGeoJSON()); ... ?>
- 57. Access cached data with Nginx upstream php { server 192.168.56.1:9000; } server { location /gis/cave/getGeoJSON { set $memcached_key "$uri"; memcached_pass memcached.server:11211; error_page 404 502 504 = @notincache; } location @notincache { fastcgi_pass php; } }
- 59. Browser Cache Webserver PHP Database 3rd party 3rd party Java, .Net, Node.js, …
- 66. Database Health
- 69. What have we learned today about scaling? • Create well sized environment • Ensure high availability • Ensure high performance • Handle large number of transactions • Respond to changed load conditions • Respond to feature requests • Find and fix problems fast • Monitor properly