Merge pull request #1043 from sulake/fix_nits

Correct var names, improve documentation.

redisson/src/main/java/org/redisson/RedissonMapCache.java

@@ -102,7 +102,7 @@ public class RedissonMapCache<K, V> extends RedissonMap<K, V> implements RMapCac
     
     @Override
     public RFuture<Boolean> trySetMaxSizeAsync(int maxSize) {
-        if (maxSize <= 0) {
+        if (maxSize < 0) {
             throw new IllegalArgumentException("maxSize should be greater than zero");
         }
         
@@ -116,7 +116,7 @@ public class RedissonMapCache<K, V> extends RedissonMap<K, V> implements RMapCac
     
     @Override
     public RFuture<Void> setMaxSizeAsync(int maxSize) {
-        if (maxSize <= 0) {
+        if (maxSize < 0) {
             throw new IllegalArgumentException("maxSize should be greater than zero");
         }
         

redisson/src/main/java/org/redisson/api/RMapCache.java

@@ -44,6 +44,7 @@ public interface RMapCache<K, V> extends RMap<K, V>, RMapCacheAsync<K, V> {
      * Superfluous elements are evicted using LRU algorithm.
      * 
      * @param maxSize - max size
+     *                  If <code>0</code> the cache is unbounded (default).
      */
     void setMaxSize(int maxSize);
     
@@ -53,6 +54,7 @@ public interface RMapCache<K, V> extends RMap<K, V>, RMapCacheAsync<K, V> {
      *
      * @param maxSize - max size
      * @return <code>true</code> if max size has been successfully set, otherwise <code>false</code>.
+     *         If <code>0</code> the cache is unbounded (default).
      */
     boolean trySetMaxSize(int maxSize);