Caching results

[petitefl3ur.petitefl3ur.gmail.com]

Hello,

I have read the how to : avoid method or getter to be called several times by caching result

and i have a question about the In-method cache.

In my application i'm displaying on the home page some news. That's classical, and these news are retreiving from database in a init method :

@Name("home")
public HomeAction {

   @In private NewsDao newDao;
   private List<News> someNews = null;
   
   public String init() {
        someNews = newsDao.findLastNews();
   }

   public List<News> getSomeNews() {return someNews;} 

}

And in the home.xhtml i cache the results

<s:cache cacheProvider="#{jboss2Cache}" key="homeLastNews" region="/enov/cache/fragment/home">
   ... the display in a dataTable of my news with #{home.someNews} ...
</s:cache

So my question is : like the In-method cache, can i test with my cache provider  if for this region the key is still in cache and so not making the call to the DAO and the database.

Something like this :

@Name("home")
public HomeAction {

   @In(value="jboss2Cache") JbossCache2Provider jboss2Cache;

   @In private NewsDao newDao;
   private List<News> someNews = null;
   
   public String init() {
        if (jboss2Cache.get("/enov/cache/fragment/home","homeLastNews") == null) {
           someNews = newsDao.findLastNews();
        }
   }

   public List<News> getSomeNews() {return someNews;} 

}

I'm thinking about this because even with a lot of page fragments in cache, beans are still doing a lot of useless queries...which are in cache too by the way...

What do you think about that? Is this really good for performance?

Merci!