Enterprise-Scale WordPress
- 2. Who Am I? • Developer at doejo • Been working primarily on WP projects for the past 3 years • Scaling up from small marketing sites
- 3. What’s the #1 rule of Enterprise-Scale WordPress?
- 4. Everything takes longer. (and that’s a good thing)
- 5. Part 1 | Infrastructure
- 8. What is WordPress VIP? • Managed Hosting by Automattic • Serves just over 22 billion page views/month • Includes Security, Code Review, and much more • Hosted on the same platform that powers millions of blogs on WordPress.com
- 9. WordPress.Com Serves 70,000 Req/Sec And Over 15 Gbit/Sec Of Traffic (2012) Source: http://highscalability.com/blog/2012/9/26/wordpresscom-serves-70000- reqsec-and-over-15-gbitsec-of-traf.html
- 10. What if I don’t want to pay $5k+/month?
- 12. What if I want to manage it myself?
- 16. What kind of traffic are we talking about? • 4-6 million pageviews / month • 20,000 page views / hour (during the work day) • 5 page views every second (among 100s of concurrent connections)
- 20. Load Balancing
- 22. Enterprise-Scale KK-PROD1 KK-PROD2 KK-PROD3 KEANAN’S MACBOOK Load Balancer Icon by Alex WaZa for Noun Project HTTP://KK.COM
- 24. Servers are busy • Serving static assets (HTML/CSS/JS/JPG/PNG/ PDF, etc…) • Processing and serving all needed PHP templates • Making MySQL calls
- 26. Enterprise-Scale KK-PROD1 KK-PROD2 KK-PROD3 KEANAN’S MACBOOK Load Balancer Icon by Alex WaZa for Noun Project HTTP://KK.COM
- 27. Caching
- 28. Servers are busy • Serving static assets (HTML/CSS/JS/JPG/PNG/ PDF, etc…) • Processing and serving all needed PHP templates • Making MySQL calls
- 30. Front End Caching • Cache stored on the user’s machine • Specified expiration date when the asset is “stale” • Saves the server from serving these assets that don’t change • Advanced Mode: Cache busting URL string • Super Advanced Mode: CDN
- 31. Back End Caching
- 32. https://memcached.org/ Memcached is…often used to speed up dynamic database-driven websites by caching data and objects in RAM to reduce the number of times an external data source (such as a database or API) must be read.
- 33. Backend Caching • Memcached saves web server and database server • Prevents blocking DB calls • Must be flushed when changes are made
- 34. Phil Carlton, Tim Bray, Jeff Atwood, and many others There are two hard things in computer science: cache invalidation, naming things, and off-by-one errors.
- 35. Part 2 | Workflow
- 36. Task Management
- 37. Task Management • JIRA/Trello • Sprint Planning • Can be tied in with Version Control
- 38. Version Control
- 39. Version Control • Git (Command Line or Source Tree) • Branches are important • Tie branches and commits to tickets • You may need…
- 40. Code Review
- 41. Code Review • Peer review of your commits • Included with WP VIP • Useful double check • Useful for learning across the team
- 43. Automated Deployments • No more manual FTP • Deploy from Version Control • Ensure pre- and post-deployment steps are the same every time • Deployment == One Less Thing To Think About
- 44. Part 3 | Dos and Don’ts
- 46. DON’T: Dump everything in functions.php • Multiple files with grouped functions • Namespacing • Sanity when Searching • lib/*
- 48. DON’T: Dump everything in functions.php (Part 2) • Bigger than a group of functions? Feature Plugin. • Pros: Can be maintained independently • Cons: Has to be maintained independently
- 49. DO: Keep request count low • Ad Networks, Analytics, Social Integration, etc • Maximum simultaneous connections (per browser) • Think of the mobile users • Luckily, Dev Tools has your back
- 52. In summary…
- 53. Everything takes longer. (and that’s a good thing)