1. Architecture of Large-Scale Websites
Yu Feng
06/08/2008

2. Static Content Image Servers Database Cache Mirror Load Balance
Agenda
Static Content
Image Servers
Database
Cache
Mirror
Load Balance

3. Static Content Use CMS (Content Management System)
Can be managed easily (add/remove/modify)
Channels

4. Static Content (cont’d)
Make it static as much as possible
Dynamic pages are always much slower
Static pages are more cache-friendly
The ways that high traffic sites do
Netease, Sina, Mop
Convert dynamic pages to static ones (BBS)

5. Image Servers Use separate image servers Images
Small size
Large amount
Reduce the stress of the main server
Can be optimized
nginx
lighttpd

6. Improve the design of your database Tables Tuning Your application

7. Database (cont’d) Use database clusters Oracle MySQL
MySQL Replication Master/Slave)
MySQL-Proxy

8. Why caching is important?
Cache
Why caching is important?

9. Apache Squid Ncache Memcached …
Cache (cont’d)
Apache
Squid
Ncache
Memcached …

10. Mirror
Different entrance

11. Load Balance
DNS
What is a L4/L7 switch?

12. Load Balance (cont’d)
Hardware
F5, Aleton

13. Load Balance (cont’d)
LVS
HAProxy

14. The End
Thanks