1. You can find out how much money you can get for each order first. Note: you can t inquire about it when you place an order. (the current consideration is to slow down the memory when querying, but if this order is checked, the order will not necessa...

what webapp, does is because the business logic is relatively complex, and the server is a stateless service (session, etc., cannot be used to store page data), pages are nested with each other, and it is complex to process data back and forth. Now, in ...

I have several projects that reference dictionaries. The dictionaries of these projects are all cached, and then another project maintains the dictionary, but it cannot access the cached database. It can only put the new or changed data on the oracle, so...

redis uses the setnx command to create locks. How long should I set the expiration time? How to set the failure time is too short, the method is not finished, the lock is automatically released, then concurrency problems will arise. If you set it for too...

redis serves as the cache for the database, but redis does not support sql queries? How to solve? ...

after saving the value of redis in Java, the value cannot be fetched. You can save it to redis, but the value of key taken out is null . @Autowired private JedisClient jedisClient; redis redis jedisClient.hset("INDEX_CONTENT", cid+"&qu...

I use spring-session and redis to share session, and then report the following error. It looks as if spring-context-5.0.7.RELEASE and spring-session-1.3.3.RELEASE are in conflict, but I didn t directly quote whether spring-context, is in some stater pa...

I can get it from the command line, but I just can t get it in the code. How to solve it? ...

problem description after reading the official brief guidebook and some blog posts, there is no mention of the method of caching specified redis data structures in an annotated manner. all want to ask whether it is not possible to cache specified red...

@ CachePut public Result updateUser (User user) { } @ Cacheable public Result getUserList () { } query the (getUserList) of all users and store it in the cache. After modifying the individual user information (updateUser), how to update the cache o...

I wrote a redis client myself. When testing concurrently, I found that the acquired redis connection could not be returned to the connection pool this is the unit test class public class RedisTest { private static final ExecutorService executorS...

redis as a cache feature has many advantages, which can ease the pressure on the server first determine whether there is any in the cache. If not, check DB , then directly use . What if DB is updated? Isn t the data in redis just the old dirty data? ...

1, background official Redis cluster clustering scheme currently used by redis: spring data redis and Luttuce currently used by cli: (luttuce is better than jedis instead of jedis, cluster) 2. Purpose want to delete some pattern matching key on...

when a novice learns redis and tries a redis lock, the go code is as follows: while(true) { xxxxxxx } grab the lock. So I wonder if the real production environment is also realized in this way. I was wrong in the first place. If you have releva...

question: in the actual project, I use redis as the resource lock. Only the thread that acquires the lock is allowed to execute. And then finally release the lock. The thread was blocked for 16 minutes before the resource was released. try to solve:...

recently, I want to use Java spring to connect to the redis cluster, but I can t find the official teaching documents of redis cluster on the Internet. I m still confused about configuring redis cluster for spring. ...