Well, there are ways to get some performance recommendations at both the database and application levels.
For database tiers here are a few entries
- Query optimization
- Creating indexes on frequently asked data.
For some ORM layers, such as hibernate, it also provides some mechanism for caching outputs at the primary levels and secondary levels.
,
1. EHCache
2. Memcached
JCS
java
java-caching-system
,
- HTTP
- .
- javascripts
- CSS
- CDN severs
Yahoo . YSLOW YAHOO. , , .