Always do a (potentially distributed) cache remove on invalidation, regardless of what's in the local cache. From Kyle Sampson.

src/java/com/samskivert/jdbc/depot/PersistenceContext.java

@@ -371,10 +371,7 @@ public class PersistenceContext
 
         CacheAdapter.CacheBin<T> bin = _cache.getCache(cacheId);
         CacheAdapter.CachedValue<T> element = bin.lookup(cacheKey);
-        if (element == null) {
+        if (element != null) {
-            return;
-        }
-
             // find the old entry, if any
             T oldEntry = element.getValue();
             if (oldEntry != null) {
@@ -390,9 +387,9 @@ public class PersistenceContext
                     }
                 }
             }
+        }
 
-        // then evict the keyed entry, if needed
+        // then remove the keyed entry from the cache system
-        log.debug("evicting [cacheKey=" + cacheKey + "]");
         bin.remove(cacheKey);
     }