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For code debugging, we can use any test code in the previous chapter as the Debug carrier. In this chapter, we actually study these two codes: InputStream xml = Resources.getResourceAsStream("mybatis-config.xml"); SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(xml); That is, how to load the MyBatis global ...

IDS is an advanced open source key value storage system, which is implemented in ANSI C. It is similar to memcached, but supports persistent data storage Queue operation: <?php $redis = new Redis(); $redis->connect('127.0.0.1',6379); while(True){ try{ $value = 'value_'.date('Y-m-d H:i:s'); $redis->LPUSH('key1',$value); sleep(r ...

Source location: intset.h and intset.c 8.1 data structure /* Note that these encodings are ordered, so: * INTSET_ENC_INT16 < INTSET_ENC_INT32 < INTSET_ENC_INT64. */ #define INTSET_ENC_INT16 (sizeof(int16_t)) #define INTSET_ENC_INT32 (sizeof(int32_t)) #define INTSET_ENC_INT64 (sizeof(int64_t)) // All the following data are stored in ...

0. Project construction As usual, let's build a new project first   configuration   The project is a little messy. The name of the project is what we call it   mybatis-03-mapper   Well, the imported dependencies are the same as before, and then simplify the previous code. The copied project structure and documents shall be ...

1, Basic command 1. Switch database (select) redis has 16 databases by default, and the 0 database is used by default Command for switching data: select number localhost:6379> select 2 OK # Switching succeeded localhost:6379[2]> # 6379 [2] represents the third database 2. set and get methods Command 1: set ...

Introduction to character sets and comparison rules Character set introduction We know that only binary data can be stored in the computer, so how to store strings? Of course, it is necessary to establish the mapping relationship between characters and binary data. To establish this relationship, at least two things should be clear: What ch ...

From my point of view, this article is a little rough. After all, it doesn't take much time. As an entry point, it may not enter the door? Redis is a very powerful database. I once read his source code and marveled at the monotony of his bottom layer, but the variability of his top layer. This is in response to the sentence "Tao gener ...

1, Background The Stream type is a new type after redis5. In this article, we use Spring boot data redis to consume the data in Redis Stream. Realize independent consumption and consumption group consumption. 2, Integration steps 1. Import jar package <dependencies> <dependency> <groupid>org.springframework.boot</ ...

Introduction to Redis database As a mature data storage middleware, Redis provides perfect data management functions, such as data expiration mentioned earlier and the data evict strategy we want to talk about today. Data locality principle The principle of locality, which runs through computer science, can clearly tell you that there are ...

1, BackgroundThe Stream type is a new type after redis5. In this article, we use Spring boot data redis to consume the data in Redis Stream. Realize independent consumption and consumption group consumption.2, Integration steps1. Import jar package<dependencies> <dependency> <groupId>org.springframework.boot</groupId& ...