Add maxSize setting for SpringCacheManager #1067

redisson/src/main/java/org/redisson/spring/cache/CacheConfig.java

@@ -34,6 +34,8 @@ public class CacheConfig {
 
     private long maxIdleTime;
     
+    private int maxSize;
+
     /**
      * Creates config object with
      * <code>ttl = 0</code> and <code>maxIdleTime = 0</code>.
@@ -72,6 +74,21 @@ public class CacheConfig {
         this.ttl = ttl;
     }
 
+    
+    public int getMaxSize() {
+        return maxSize;
+    }
+
+    /**
+     * Set max size of map. Superfluous elements are evicted using LRU algorithm.
+     *
+     * @param maxSize - max size
+     *                  If <code>0</code> the cache is unbounded (default).
+     */
+    public void setMaxSize(int maxSize) {
+        this.maxSize = maxSize;
+    }
+
     public long getMaxIdleTime() {
         return maxIdleTime;
     }

redisson/src/main/java/org/redisson/spring/cache/RedissonSpringCacheManager.java

@@ -216,7 +216,7 @@ public class RedissonSpringCacheManager implements CacheManager, ResourceLoaderA
             return createMap(name, config);
         }
         
-        if (config.getMaxIdleTime() == 0 && config.getTTL() == 0) {
+        if (config.getMaxIdleTime() == 0 && config.getTTL() == 0 && config.getMaxSize() == 0) {
             return createMap(name, config);
         }
         
@@ -248,6 +248,8 @@ public class RedissonSpringCacheManager implements CacheManager, ResourceLoaderA
         Cache oldCache = instanceMap.putIfAbsent(name, cache);
         if (oldCache != null) {
             cache = oldCache;
+        } else {
+            map.setMaxSize(config.getMaxSize());
         }
         return cache;
     }