redis进阶实例

深藏阁楼爱情的钟 2021-12-12 07:27 406阅读 0赞

redis提供了多重相关操作，以前只会简单的get、set，当项目用到rightPush、rightPop以及leftPush、leftPop处理优先级任务时，我才发现这个功能的好用，善用工具类，坚决很多问题，看完有惊喜

/**
         * redis 的get和set方法
         */
        @Test
        public void test01() {
            CacheUtils.set("jarvins:robot:" + 1, initRobotRole(1));
            CacheUtils.set("jarvins:robot:" + 2, initRobotRole(2));
            CacheUtils.set("jarvins:robot:" + 3, "jarvins");
    
            System.out.println(CacheUtils.get("jarvins:robot:1", RobotRole.class));
            RobotRole robotRole = CacheUtils.get("jarvins:robot:2", RobotRole.class);
            System.out.println(robotRole.getRoleName());
            System.out.println(CacheUtils.get("jarvins:robot:3",String.class));
        }
    
    
        /**
         * redis 的del方法: 可以输入多个key
         */
        @Test
        public void test02() {
            CacheUtils.del("jarvins:robot:" + 2,"jarvins:robot:" + 1);
        }
    
        /**
         * getObj的使用
         */
        @Test
        public void test03() {
            Object obj = CacheUtils.getObj("jarvins:robot:1");
            System.out.println(obj);
        }
    
        /**
         * getObj
         * retain true保留，false取完直接删掉
         */
        @Test
        public void test04() {
            Object obj = CacheUtils.getObj("jarvins:robot:1", false);
            System.out.println("============" + obj);
        }
    
        @Test
        public void test05(){
            CacheUtils.set("jarvins:robot:num",100);
            CacheUtils.incr("jarvins:robot:num",4);
            final double decr = CacheUtils.decr("jarvins:robot:num", 2);
            System.out.println(decr);
        }
    
        // ------------------------------------------以下针对map进行操作-------------------------------------------------//
    
        /**
         * 向key对应的map中添加缓存对象
         * addMap(String key, String field, T obj)
         */
        @Test
        public void test06() {
            CacheUtils.addMap("jarvins:robot:robotName", initRobot("robotCuqi").getLoginName(), initRobotRole(1));
        }
    
        /**
         * CacheUtils.getMapField
         */
        @Test
        public void test07() {
            RobotRole jarvins = CacheUtils.getMapField("jarvins:robot:robotName", initRobot("jarvins1").getLoginName(), RobotRole.class);
            System.out.println(jarvins);
        }
    
        /**
         * 获取所有的map集合
         */
        @Test
        public void test08(){
            Map<String, RobotRole> robotRoleMap = CacheUtils.mget("jarvins:robot:robotName", RobotRole.class);
            System.out.println(robotRoleMap);
            System.out.println(robotRoleMap.get("jarvins1"));
            System.out.println(robotRoleMap.get("jarvins1").getRoleName());
        }
    
        /**
         * 根据key值删除map元素
         */
        @Test
        public void test09() {
            CacheUtils.delMapField("jarvins:robot:robotName","robotCuqi");
        }
    
        /**
         * 设置失效时间
         */
        @Test
        public void test10() {
            CacheUtils.expire("jarvins:robot:3", 10000);
        }
    
        //------------------------------------set操作-----------------------------------//
        @Test
        public void test11() {
            CacheUtils.sadd("jarvins:fans:keys","fans","cars","robotic");
            Set<String> keys = CacheUtils.keys("jarvins:fans:keys");
        }
    
        //-----------------------------------list-------------------------------------//
    
        /**
         * rightPush
        */
    
        @Test
        public void test12(){
            CacheUtils.rightPush("jarvins:fans:robotList", initRobotUserList1());
            List<Object> objectList = CacheUtils.returnList("jarvins:fans:robotList");
            System.out.println(objectList);
        }
    
        /**
         * 从list左侧插入
         */
        @Test
        public void test13() {
            CacheUtils.leftPush("jarvins:fans:robotList", initRobotUserList2());
        }
    
        /**
         * 取出所有的list内容
         */
        @Test
        public void test14() {
            List<Object> objects = CacheUtils.returnList("jarvins:fans:robotList");
            Object o = objects.get(0);
            System.out.println(objects);
            System.out.println(o);
        }
    
        @Test
        public void test15(){
            CacheUtils.leftPop("jarvins:fans:robotList");
        }
    
        
    
    
        // 初始化
        public RobotRole initRobotRole(Integer robotId) {
            RobotRole robotRole = new RobotRole();
            robotRole.setRoleName("ai机器人");
            robotRole.setLastEditorId(123);
            robotRole.setCreateTime(new Date());
            robotRole.setId(robotId);
            return robotRole;
        }
    
        public RobotUser initRobot(String robotName){
            RobotUser robotUser = new RobotUser();
            robotUser.setLoginName(robotName);
            robotUser.setRobotName(robotName);
            return robotUser;
        }
    
        public List<RobotUser> initRobotUserList1(){
            List<RobotUser> userList = Lists.newArrayList();
            userList.add(initRobot("BruceLee1"));
            userList.add(initRobot("BruceLee2"));
            userList.add(initRobot("BruceLee3"));
            return userList;
        }
    
        public List<RobotUser> initRobotUserList2(){
            List<RobotUser> userList = Lists.newArrayList();
            userList.add(initRobot("BruceLee7"));
            userList.add(initRobot("BruceLee8"));
            userList.add(initRobot("BruceLee9"));
            return userList;
        }

此测试类拿去就可以用，但是不能跑，相关的代码有点多，可以看看下面的这个地址

[https://gitee.com/SmileLsf/jarvins\_redis.git][https_gitee.com_SmileLsf_jarvins_redis.git]

[https_gitee.com_SmileLsf_jarvins_redis.git]: https://gitee.com/SmileLsf/jarvins_redis.git