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https://issues.apache.org/jira/browse/SLING-11133?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Dirk Rudolph updated SLING-11133:
---------------------------------
    Description: 
Currently the ModelAdapterFactory caches a cacheable model for the requested 
type only

https://github.com/apache/sling-org-apache-sling-models-impl/blob/master/src/main/java/org/apache/sling/models/impl/ModelAdapterFactory.java#L430-L432

{code}
if (result.wasSuccessful() && modelAnnotation.cache() && adaptableCache != 
null) {
  adaptableCache.put(requestedType, new 
SoftReference<Object>(result.getValue()));
}
{code}

However, if a model is an adapter of multiple types an instance of it can also 
be returned for more than just the requested type. 

While it is not save to cache the model for all of its adapter types (see 
SLING-11074), it is certainly save to cache the Model for its implementation 
type additionally to the requested type. In fact, when caching the Model for 
the implementation type caching it for the requested type is redundant.

  was:
Currently the ModelAdapterFactory caches a cacheable model for the requested 
type only

https://github.com/apache/sling-org-apache-sling-models-impl/blob/master/src/main/java/org/apache/sling/models/impl/ModelAdapterFactory.java#L430-L432

{code}
if (result.wasSuccessful() && modelAnnotation.cache() && adaptableCache != 
null) {
  adaptableCache.put(requestedType, new 
SoftReference<Object>(result.getValue()));
}
{code}

However, if a model is an adapter of multiple types an instance of it can also 
be returned for more than just the requested type. 

While it is not save to cache the model for all of its adapter types (see 
SLING-11074), it is certainly save to cache the model for its implementation 
type additionally to the requested type. 


> Cache model for its implementation type
> ---------------------------------------
>
>                 Key: SLING-11133
>                 URL: https://issues.apache.org/jira/browse/SLING-11133
>             Project: Sling
>          Issue Type: Improvement
>          Components: Sling Models
>            Reporter: Dirk Rudolph
>            Priority: Major
>             Fix For: Models Implementation 1.5.2
>
>
> Currently the ModelAdapterFactory caches a cacheable model for the requested 
> type only
> https://github.com/apache/sling-org-apache-sling-models-impl/blob/master/src/main/java/org/apache/sling/models/impl/ModelAdapterFactory.java#L430-L432
> {code}
> if (result.wasSuccessful() && modelAnnotation.cache() && adaptableCache != 
> null) {
>   adaptableCache.put(requestedType, new 
> SoftReference<Object>(result.getValue()));
> }
> {code}
> However, if a model is an adapter of multiple types an instance of it can 
> also be returned for more than just the requested type. 
> While it is not save to cache the model for all of its adapter types (see 
> SLING-11074), it is certainly save to cache the Model for its implementation 
> type additionally to the requested type. In fact, when caching the Model for 
> the implementation type caching it for the requested type is redundant.



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