redis 包之间关系

悠悠 2022-11-17 13:43 191阅读 0赞

一，redis客户端
    1.jedis 2.redisson
    
    二.redis操作方式
    1.JedisCluster（客户端：jedis）（依赖：jedis）
    2.redisson（客户端：redisson）
    3.RedisTemplate （依赖：spring-data-redis）
    
    三，依赖之前关系，见后面
    以下包含两种：jedis redisson
    依赖顺序为包含关系：上面包含下面依赖
    
    四.序列化，desktop manager展示问题
    展示**菱形黑符号，因为存的是二进制，只能展示二进制数据。
    展示正常因为：1.存的时候就是String或json 2.单独加了template序列化配置类
    1.JedisCluster 查询的是二进制
    2.RedisTemplate 查询的是正常json
    
    对比三个不同项目，redis存储方式。
    
    1）JedisCluster序列化（我们自己封装）

public boolean set(String key, Object value, Integer expiration) throws Exception {
            String result = "";
            long begin = System.currentTimeMillis();
            if (expiration > 0) {
                result = this.jedisCluster.setex(SafeEncoder.encode(key), expiration, this.serialize(value));
            } else {
                result = this.jedisCluster.set(SafeEncoder.encode(key), this.serialize(value));
            }
    
            long end = System.currentTimeMillis();
            this.logger.info("set key:" + key + ", spends: " + (end - begin) + "ms");
            return "OK".equalsIgnoreCase(result);
        }

protected byte[] serialize(Object o) {
        if (o == null) {
            return new byte[0];
        } else {
            Object var2 = null;
    
            try {
                ByteArrayOutputStream bos = new ByteArrayOutputStream();
                ObjectOutputStream os = new ObjectOutputStream(bos);
                os.writeObject(o);
                os.close();
                bos.close();
                byte[] rv = bos.toByteArray();
                return rv;
            } catch (IOException var5) {
                throw new IllegalArgumentException("Non-serializable object", var5);
            }
        }
    }

2）RedisTemplate

redisTemplat.opsForValue().set("template",teacher);
    
    类：AbstractOperations
    public void set(K key, V value) {
        final byte[] rawValue = this.rawValue(value);
        this.execute(new AbstractOperations<K, V>.ValueDeserializingRedisCallback(key) {
            protected byte[] inRedis(byte[] rawKey, RedisConnection connection) {
                connection.set(rawKey, rawValue);
                return null;
            }
        }, true);
    }
    
    byte[] rawValue(Object value) {
        return this.valueSerializer() == null && value instanceof byte[] ? (byte[])((byte[])value) : this.valueSerializer().serialize(value);
    }

最终保存接口：
    public interface RedisStringCommands {
    
        @Nullable
        Boolean set(byte[] var1, byte[] var2);

3）ValueOperation

redisUtils.set(key, JSONObject.toJSONString(x), RedisEnum.DISTINCT_ORDER_NO.expired);
    
    @Autowired
    private ValueOperations<String, String> valueOperations;
    public void set(String key, Object value, long expire) {
        this.valueOperations.set(key, JsonUtils.toJson(value));
        if (expire != -1L) {
            this.expire(key, expire, TimeUnit.SECONDS);
        }
    
    }
    
    类：DefaultValueOperations
    @Override
    public void set(K key, V value) {
    
           byte[] rawValue = rawValue(value);
           execute(new ValueDeserializingRedisCallback(key) {
    
                  @Override
                  protected byte[] inRedis(byte[] rawKey, RedisConnection connection) {
                         connection.set(rawKey, rawValue);
                         return null;
                  }
           }, true);
    }

jar依赖

1.使用JedisCluster
    
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-redis</artifactId>
        <version>2.4.4</version>
    </dependency>
    
    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-redis</artifactId>
        <version>2.4.7</version>
    </dependency>
    
    <dependency>
        <groupId>org.springframework.session</groupId>
        <artifactId>spring-session-data-redis</artifactId>
        <version>2.4.2</version>
    </dependency>
    
    <dependency>
        <groupId>redis.clients</groupId>
        <artifactId>jedis</artifactId>
        <version>3.6.0-RC1</version>
    </dependency>
    
    
    <dependency>
        <groupId>org.redisson</groupId>
        <artifactId>redisson-spring-boot-starter</artifactId>
        <version>3.15.3</version>
    </dependency>
    
    <dependency>
        <groupId>org.redisson</groupId>
        <artifactId>redisson-spring-data-21</artifactId>
        <version>3.15.3</version>
    </dependency>
    
    <dependency>
        <groupId>org.redisson</groupId>
        <artifactId>redisson</artifactId>
        <version>3.15.3</version>
    </dependency>