系统过滤重复的请求

jsowell-common/src/main/java/com/jsowell/common/core/redis/RedisCache.java

@@ -376,7 +376,7 @@ public class RedisCache {
 	 * @param key 键
 	 * @param value 值
 	 * @param expireTime 过期时间，单位秒
-	 * @return
+	 * @return true: set成功; false失败表示已有值
 	 */
 	public Boolean setnx(String key, String value, long expireTime) {
 		return redisTemplate.opsForValue().setIfAbsent(key, value, expireTime, TimeUnit.SECONDS);