High PerformanceDrupal Web Sites

360

Who's that punk ?!

A French nerd!

Used to manage complex IT projects for the last 10 years

And many more nights on performances issues ... :)

... who just created his own company

Summary

Cache

Upload & Download

Browser rendering

Compression

Drupal pages architecture

Analyze

Cache

What should we cache?

EVERY POSSIBLE THING!!!

PHP (opcode)

Computations (functions results)

Datas (views, DB requests)

Entities & Fields (nodes, comments, taxonomy terms, user profiles,)

Images (imagecache/styles)

HTML (page, block, panel, pane, views)

Any static ressource (CSS, JS, SWF, SVG, PDF, ZIP, Video, Sound,)

Cache

How should we cache?

PHP (opcode):

APC

Eaccelerator (a bit faster, seg fault)

// allocate one segment of 32Mbapc.shm_segments=1apc.shm_size=32

// do not check if php file was updatedapc.stat= 0

// never expireapc.ttl = 0

// use kernel anonymous memoryapc.mmap_file_mask = /dev/zero.

Cache

function mymodule_complex_calculation_crazy_cache() { static $cache; if (isset($cache)) { return $cache; } if ($cache = &drupal_static(__FUNCTION__)) { return $cache; } if ($cache = cache_get('my_cache_item', 'my_cache_bin')) { $cache = $cache->data; } else { // some heavy calculations that kills kitten $cache = complex_calculation(); cache_set('my_cache_item', $cache, 'my_cache_bin'); } return $cache;}

How should we cache?

Computations (functions results):

drupal_static (sometime static if big amount of calls within a page load)

cache_set / cache_get (use your own bin if lot of data to store and/or need more control over your cache)

Cache

How should we cache?

Datas (views, DB requests): Views cache

Views per user cache

Own cache bin for DB requests (if somehow there is a good reason to request DB directly)

Note:

A custom cache bin require, at module install, to create a new cache table using the same schema as core cache tables (see table below).Copy/paste from: includes/system.install

FieldTypeNull

cidvarchar(255)no

datalongblobyes

expireintno

createdintno

headerstextyes

serializedsmallintno

Cache

How should we cache?

Entities (nodes, comments, taxonomy terms, user profiles,): Entity cache

Cache

How should we cache?

Images (imagecache/styles): ImageCache

ImageCache External

Cache

How should we cache?

HTML (page, block, panel, pane, views): Panels Page Cache

Panels Hash Cache

Varnish

Varnish ESI

Cache

How should we cache?

Any static ressource (CSS, JS, SWF, SVG, PDF, ZIP, Video, Sound,): Varnish

Nginx

CDN far-future

Cache

What cache backends?

http://janezurevc.name/static/bcn_cache

Cache

What about cache invalidation?

Cache actions

Cachetags

Views content cache

Expire

Entity cache flusher

Upload & Download

Cookie free domains

CDN module in order to use static resources dedicated domain(s) which differ from main domain (for instance, static.mysite.com)

$cookie_domain have to be set to main domain in settings.php (for instance www.mysite.com)

Upload & Download

Aggregates

JS (Advanced aggregate)

CSS (Advanced aggregate)

Images & CSS (CSS embeded image)

Images (spritesheets)

Note:

Sprites are now obselete, use CSS embeded image instead

(for IE, images no JS to hide an element on load, hide by CSS and show from JS (perception matters!)

Compression

What should we compress ?

Images

CSS

JS

HTML

Any static file

Compression

How should we compress ?

Images

Imageapi optimizejpegtran

advpng

Compression

How should we compress ?

CSS

Advagg CSS compress

CSS Compressorfaster than CSSTidy

gzip

Compression

How should we compress ?

JS

Advagg JS compress

JSMinfaster than JSMin+

Gzip

Compression

How should we compress ?

HTML

Gzip

Compression

How should we compress ?

Any static files

Gzip

Drupal pages architecture

How to build a performant page ?

USE AS FEW MODULES AS POSSIBLE !

Search_api (solr, mongo)

Mongodb

Redis

Memcache

Elysia cron

Panels

Panels everywhere

Views

Rules

Entities

Drupal pages architecture

Why homogeneity maters ?

Blocks, panes, pick one !

One single way of managing blocks helps using ESI caching for instance; it also makes easier the cache invalidation management for these blocks.

Keep it simple : one API to implement

Analyze

Browser level

Gtmetrix.com

Yslow

Firebug

Chrome / Safari developer tools

Whichloadsfaster.com

Analyze

Drupal level

Devel

Watchdog (redirected to syslog if needed on live server)

Analyze

PHP level

FirePHP / ChromePHP

Xhprof (eventually in addition to Xdebug)

PHP error log

PHP-FPM slow logs

MySQL Slow query logs

Analyze

System level

strace

tcpdump & wireshark

Wanna get these slides ?Search for jbguerraz on Slideshare ;)

Spasibo bolshoe !
Your time now, any question ?

Entity cacheLoad 1 000 userssecondsFirst loadNext loads

No entity cache3916

Entity cache430.558

jbguerraz@skilld.fr