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1 Introduction to MySQL database MySQL is a relational database. Due to its small size, fast speed, low total cost of ownership and open source, many small and medium-sized websites choose MySQL as the website database in order to reduce the total cost of ownership. Other advantages: it can be combined with other development languages, por ...

preface When we write a piece of code to process the data, the data is stored in memory. When the program exits, the data does not exist. When the program runs next time, the data must be re entered, which involves the problem of data persistence. The general methods of data persistence include storing the data in disk files Stored in th ...

Docker installation Redis Create a Redis network docker network create redis Run redis container docker run --name master-redis \ --net redis \ -v C:\Users\Administrator\Desktop\redis\data:/data \ -v C:\Users\Administrator\Desktop\redis\conf:/usr/local/etc/redis \ -d redis redis-server /usr/local/etc/redis/redis.conf Use scaffold con ...

Use of c3p0 database connection pool (I) Theoretical knowledge of database connection pool If we want to use c3p0 database connection pool, we must first understand what database connection pool is and why it is introduced When we use JDBC to interact with the database, a Connection will be created every time we access the database. Af ...

During the Mid Autumn Festival holiday, I wanted to have a good rest. My girlfriend said that the Tencent classroom courses downloaded from my mobile phone could be transferred to the computer because there was not enough space on my mobile phone. I thought it was not very simple.. Sure enough, it was not as simple as I thought. I found the vid ...

1, Mysql database 1. What are sql, DB and DBMS, and the relationship between them? DB: database (database, which actually exists as a file on the hard disk)DBMS: database management system (database management system, including Mysql, Oracle and DB2)SQL: structured query language, a standardized general language. Standard SQL is suitable for ...

catalogue background problem improvement install CSI storage capability detection Persistent volume snapshot and recovery feature validation Basic performance test reference resources background Kubernetes (K8S)   The Container Storage Interface (CSI) was upgraded to GA status in K8S v1.13 at the end of 2018. It provides a stan ...

MySql logical architecture It is mainly divided into: connection layer, service layer, engine layer and storage layer. The process of the client executing a select command is as follows: Connection layer: the top layer is some clients and connection services, including local sock communication and most communication similar to tcplip b ...

1, Bicycles Sometimes we may use our own business code to find out a List, and then use sublist for manual paging. Manual paging can make it clear how to use the subList method of List, but this is very desirable. If the return value is too large, the memory is easy to be ruthlessly burst. import dao.TestMapper; import entity.TestEntity; imp ...

Redis five data types Redis key basic command set key name -- Set a basic key value pair keys * -- View all keys exists key -- View the corresponding key Does it exist move key Number of corresponding database -- Put this key Move the corresponding data to another database expire key Expiration time(Unit second) -- Set how long this d ...