There is joy in every inch. Let's talk about how to optimize the vector query function of Milvus database

✏️ Editor's noteEvery summer, Milvus community will work with the Software Institute of the Chinese Academy of Sciences to prepare rich engineering projects for college students in the "open source summer" activity, and arrange tutors to answer questions and solve doubts. Zhang Yumin performed well in the "open source summer&quo ...

Posted by blogger3 on Thu, 11 Nov 2021 16:19:15 -0800

Use of Spring Data Redis Stream

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& ...

Posted by awiedman on Thu, 11 Nov 2021 11:07:58 -0800

Payment transaction limit

  1, Background Technology stack: Redis+Lua Double eleven is a festival that belongs to e-commerce rather than operators. However, goose has no choice but to be on duty. After zero, the flow of the payment system rises for half an hour, and then it runs stably. With a serious and responsible attitude, I'd better stick to it all night. I ...

Posted by yuws on Thu, 11 Nov 2021 10:05:33 -0800

Java Database Connection - JDBC Details

Overview of JDBC JDBC (Java Database Connectivity) is a set of interface to connect database provided by Java language. The implementation of interface is called database driver in JDBC and is provided by major database manufacturers. The reason for this is that the user doesn't need to care about how the underlying implementation is imple ...

Posted by jigen7 on Thu, 11 Nov 2021 08:30:54 -0800

Connection query in MySQL

1, Grammar select Query list from Table 1 alias [connection type] join Table 2 aliases on Connection conditions [where [filter criteria] [group by [grouping] [having [filter criteria] [order by Sort list] Classification: inner connection (★): inner External connection Left outer (★): left [outer] Right outer (★): right [outer] fu ...

Posted by thomas777neo on Thu, 11 Nov 2021 01:08:44 -0800

SQL injection Basics

SQL injection concept Basic concepts of database Related terms data Data refers to the symbols that record and identify objective events. It is the physical symbols or a combination of these physical symbols that record the nature, state and relationship of objective things. It is a recognizable and abstract symbol. See for details Baidu ...

Posted by carleyvibe on Thu, 11 Nov 2021 00:10:37 -0800

Go operating Mysql database is so smooth

Go operation Mysql database There is a database/sql package in go, which defines the methods of connecting and operating the database, And the native supports connection pool, which is concurrent and safe. This standard library has no specific implementation, but lists the specific contents that need to be implemented by a third-party libra ...

Posted by malec on Wed, 10 Nov 2021 21:56:03 -0800

maven java project configuration dual database (multi database configuration)

preface Why configure dual or multiple databases. When you need to obtain or insert data from two or more databases, the database driver, url path, username and password of each database are different. If you follow the configuration of a single database, you can only obtain the content of one database. explain According to my method, it is ...

Posted by Comtemplative on Wed, 10 Nov 2021 19:45:40 -0800

MySQL foundation - basic operation of tables

After the database is built, we can then create tables that actually store data. When creating a table, you first need to describe what the table looks like, what columns it has, what types of data these columns are used to store, etc. this description of the table is called the structure or definition of the table. With the structure of the ta ...

Posted by madmega on Wed, 10 Nov 2021 16:34:38 -0800

MySQL tutorial Chapter 05 accounts and permissions

When the client connects to the MySQL server, it must provide valid identity authentication, such as user name and password. When the user performs any database operation, the server will verify whether the user has corresponding permissions. For example, SELECT permission is required for query tables and DROP permission is required for deletin ...

Posted by dreamer on Wed, 10 Nov 2021 12:52:00 -0800