Hello again,
I have made some tests with this simple decorator class :
public class AssetSourceCacheDecorator implements AssetSource {
private final Map<MultiKey, Asset> cache =
CollectionFactory.newConcurrentMap();
private final AssetSource delegate;
public AssetSourceCacheDecorator(AssetSource delegate) {
this.delegate = delegate;
}
public Asset getAsset(Resource baseResource, String path, Locale locale) {
MultiKey key = new MultiKey(path, locale);
if (cache.get(key) == null) {
Asset asset = delegate.getAsset(baseResource, path, locale);
cache.put(key, asset);
return asset;
}
return cache.get(key);
}
public Asset getClasspathAsset(String path) {
return this.getClasspathAsset(path, null);
}
public Asset getClasspathAsset(String path, Locale locale) {
return this.getAsset(null, path, locale);
}
}
My application is simple, it's made of :
- A simple layout component that display a localized banner
- A Component that holds a form with two properties (login and password)
I use JMeter to access to this page with 50 simultaneous threads, in the same
test conditions, i have a CPU running around 40% with the decorator, without
the decorator it gets over 55% of activity.
Christophe.
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