This talk covers ways to make your site run faster regardless of your hosting provider or host type as well as some of the commonly used plugins and caching strategies. The fucus is on RAM or the use of a Managed WordPress hosting that is already optimized for you.

1. Eugene Kovshilovsky
@mediatemple
* WordCamp Orange County 2016 *
Caching 101

2. Hello.
Eugene Kovshilovsky
Director of Engineering at Media Temple
@ekovshilovsky
@mediatemple

3. Agenda
• Caching Definition
• Caching Performance
• Caching Locations
• Plugins to Check Out
• Takeaways
• Q&A

4. Agenda
• Caching Definition
• Caching Performance
• Caching Locations
• Plugins to Check Out
• Takeaways
• Q&A

5. “A temporary storage space or
memory that allows fast access to
data”
Definition of caching

6. Why does caching matter?
DB
WordPress
Web Server OpCachePHP
WordPress
Web Server
✔

7. Agenda
• Caching Definition
• Caching Performance
• Caching Locations
• Plugins to Check Out
• Takeaways
• Q&A

8. Hardware caching performance
RAM
SSD HDD -
Spinning
Disks
20 GB/s
4M IOPS
600 MB/s
300K IOPS
200 MB/s
100 IOPS

9. Performance with multiple servers
Reverse
Proxy
Web App
Object
Cache
MySQLWeb App
DB
Cache
CDN Cache
Page
Cache
Local
Cache
Local
Cache

10. Agenda
• Caching Definition
• Caching Performance
• Caching Locations
• Plugins to Check Out
• Takeaways
• Q&A

11. Hosting environments
●Shared hosting
●Virtual Private Server hosting (VPS)
●Dedicated hosting

12. Shared hosting
Load
Balancer
Web App
MySQL
Web App
NAS
(SSD)
Application
Server
Farm
File
Cache
FS Cache
FS Cache
DB
Cache

13. Dedicated & VPS hosting
VPS Hosting
My VPS
VPS
RAM
...
Storage
(SSD?)
RAM
Storage
(SSD?)
Dedicated Hosting
File
Cache
File
Cache

14. Case Study: Media Temple’s Enterprise WordPress
Reverse
Proxy
Web
App
Object
Cache
MySQLWeb
App DB
Cache
CDN Cache
Page
Cache
Op
Cache
Op
Cache
Redis or
Memcache
NGiNX,
Varnish or
ATS PHP-FPM
or Apache

15. Content Delivery Network (CDN)

16. Amazon S3 vs. CDN
Amazon S3
●Unlimited FTP server
●Low-cost file storage
in one specific
geographical region
CDN (Content Delivery Network)
●Proxies and caches web
data at edge locations as
close to users as possible

17. Agenda
• Caching Definition
• Caching Performance
• Caching Locations
• Plugins to Check Out
• Takeaways
• Q&A

18. Caching plugins to check out
• W3 Total Cache
• Redis Object Cache
• BatCache
• WP Super Cache

19. W3 Total Cache
• All-in-one
• Compatibility check and configuration UI
• Page, database, and object cache via shared disk or
Memcache
• Drop-in: advanced-cache.php

20. Redis Object Cache
• Object cache only
• Simple UI
• Object cache with Redis
• Not for shared hosting

21. BatCache
• Object cache only
• No UI
• Object cache with Memcache
• Installation requires copying files
• Not for shared hosting

22. WP Super Cache
• File-based page cache only
• Shared hosting or single server only
• Drop-in: advanced-cache.php

23. Agenda
• Caching Definition
• Caching Performance
• Caching Locations
• Plugins to Check Out
• Takeaways
• Q&A

24. • If you are WordPress plugin developer
→ Mimic multiple configuration scenarios.
• If you are a WordPress theme / WordPress
site developer
→ Stage your site and have someone test it.
Takeaways

25. Agenda
• Caching Definition
• Caching Performance
• Caching Locations
• Plugins to Check Out
• Takeaways
• Q&A

26. Q&A
@ekovshilovsky
@mediatemple
ekovshilovsky@mediatemple.net - mediatemple.net

27. Thank you!
@ekovshilovsky
@mediatemple
ekovshilovsky@mediatemple.net - mediatemple.net