数据解决Redis中Java数据过期问题（redisjava过期）

Many developers choose to use Redis as an efficient data storage method when they use Java. However, many developers find that their data in Redis often expires quickly. In modern software development, data expiration is a big problem. If the data becomes invalid, it will have a great impact on the development of the project. So, how to solve the data expiration problem in Redis with Java? In this article, I will explain one possible solution.

First of all, we can start with the obvious solution, which is to manually set the expiration time for each piece of data stored in Redis. This is the most convenient and straightforward way of solving the data expiration problem in Redis with Java. For example, for all data stored in Redis using the Java language, we can use the following code to set the expiration time:

“`java

Jedis jedis = new Jedis(“localhost”);

jedis.expire(“key”, 3600); // expire after 3600 seconds

The above code will set the expiration time for the key specified by the argument to 3600 seconds, or one hour. We can also use the setex and pexpire commands to achieve the same goal. However, this manual solution is not very efficient when dealing with a large amount of data. If you need to set expiration time for hundreds of keys, then manual solution will not be feasible.

For large scale projects, another option would be to use a Redis plugin such as Redisson. Redisson is a Java library that makes it easier to use Redis. With Redisson, you can define an expiration policy for each piece of data stored in Redis. This policy can be configured with a few lines of code and will remain in effect until it is explicitly changed. For example, if you want to set an expiration time of one hour for all data stored in Redis, you can do this by using the following code: 
```java
Config config = new Config(); 
config.useSingleServer().setAddress("127.0.0.1:6379"); 
RedissonClient redisson = Redisson.create(config); 
ExpirationPolicy expirationPolicy = ExpirationPolicy.CREATED; 
redisson.getBucket("key").setExpire(3600, expirationPolicy);

In the above code, we set an expiration policy of CREATED and an expiration time of 3600 seconds. This policy will remain in effect until changed.

In summary, the data expiration problem in Redis with Java can be solved with a manual solution or an automated one, depending on the size of your project and the complexity of the data expiration policies. If you are dealing with a large number of keys, then the use of a Redis plugin like Redisson is recommended as it will make it much easier to manage the data expiration policies.