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Technical Articles

Database

How to fix Query dynamodb request error?

In dynamodb I have a table which contains: -email(primarykey)-password(attribute)-rname(attribute) I am using awsgosdkv1 to implement a query using only the database primary key: The structure I want to unmarshal is: typeitemstruct{ emailstring`json:"email"`passwordstring`json:"password"`rnamestring`json

Feb 11, 2024 pm 10:50 PM

Need help getting element from mongodb document and updating its value using go mongo driver

Hey, I'm using go.mongodb.org/mongo-driver package to use golang. This is my code: packagesrcimport("context""fmt""log""go.mongodb.org/mongo-driver/bson""go.mongodb.org/mongo-driver/mongo""go.mongodb.org/ mongo-driver/mongo/options")var(cl

Feb 09, 2024 pm 04:09 PM

How to use mongodb for offline development?

I'm developing a web application with Golang backend and using mongo database. However, I realized that whenever I don't have an internet connection or use public wifi, I can't connect to my MongoAtlas. This will cause my local server to panic and I will have to rely on only certain connections to run my application and self-tests. Is there any way to continue development without a proper internet connection? Any help is appreciated. Below is my code to initialize the database. main.gofuncmain(){fmt.Println("helloworld")ctx:=

Feb 09, 2024 am 08:20 AM

MongoDB GO driver overwrites existing data

I'm using go-fiber and using mongodbmongodbgo driver. I only want to update the fields given by the body. But it is overwriting the data. funcUpdateOneUser(c*fiber.Ctx)error{params:=c.Params("id")body:=new(models.User)id,err:=primitive.ObjectIDFromHex(params)iferr!=nil{return

Feb 08, 2024 pm 11:00 PM

How to connect to a non-default firestore database using Go?

I saw there was a post about using node to connect to a non-default Firestore database. I was wondering if anyone knows the same functionality in the firestoreGo package? I've tried direct translation without success. Maybe the package hasn't been updated with this feature yet?

Feb 08, 2024 pm 09:05 PM

go语言

Responsibilities and Skill Requirements - Java Engineer

What are the responsibilities and skill requirements of a Java engineer? With the rapid development of information technology, the role of software engineers has become more and more important. Among them, Java engineers are an important part of the software development field. This article will explore the responsibilities and skill requirements of a Java engineer to help readers better understand this career. First, let’s understand the responsibilities of a Java engineer. Java engineers are responsible for software development and implementation using the Java programming language. They work closely with product managers, project managers, and other developers

Feb 02, 2024 pm 09:06 PM

java工程师职责技能要求 spring mvc

Essential skills: Familiarity with common database choices

Essential for Go language developers: Understand commonly used database choices, specific code examples are required. As a Go language developer, it is very important to understand and be familiar with commonly used database choices. Database plays an important role in applications, and choosing a suitable database can improve development efficiency and application performance. This article will introduce several databases commonly used in Go language development, help readers understand their characteristics, and provide corresponding code examples. MySQLMySQL is one of the most commonly used relational databases. It has good stability and

Jan 28, 2024 am 09:23 AM

数据库选择常用数据库

Which database to choose best matches the Go language?

Since its birth, the Go language has become an efficient, concise and powerful programming language in the minds of developers. As an indispensable part of modern applications, the database is also particularly important when used in conjunction with the Go language. However, choosing what kind of database is suitable for use with the Go language is a matter that requires careful consideration. This article will introduce some commonly used databases, how they work perfectly with the Go language, and provide specific code examples. MySQLMySQL is an open source relational database

Jan 28, 2024 am 08:12 AM

数据库 Go语言搭配

Exploration of commonly used database selections in Go language

Explore commonly used database selections in Go language Introduction: In modern software development, whether it is web applications, mobile applications or Internet of Things applications, data storage and query are inseparable. In the Go language, we have many excellent database options. This article will explore commonly used database choices in the Go language and provide specific code examples to help readers understand and choose a database that suits their needs. 1. SQL database MySQL MySQL is a popular open source relational database management system. It supports a wide range of features and

Jan 28, 2024 am 08:04 AM

探索数据库选择 Go语言中常用

Choose the best efficient text database in PHP: improve your data storage and query efficiency

With the popularity of the Internet and the increasing amount of data, the efficiency of data storage and query has become an increasingly important issue. In PHP development, text database is a widely used data storage method. However, how to choose the best and efficient text database is very important to improve data storage and query efficiency. In this article, we will introduce the best efficient text databases in PHP and provide specific code examples. SQLiteSQLite is a lightweight, ACID transaction-enabled and highly reliable

Jan 19, 2024 am 08:52 AM

PHP 高效文本数据库

PHP efficient text database recommendation: choose the database solution that best suits you

With the rapid development of the Internet and mobile Internet, data processing has become an integral part of various applications. As a popular Web programming language, PHP naturally requires an efficient text database to support data storage and processing. In this article, we will recommend some efficient PHP text databases and provide specific code examples to help you choose the solution that is best for you. Advantages of PHP text database Before introducing PHP text database, let us first understand the advantages of PHP text database

Jan 19, 2024 am 08:21 AM

解决方案 PHP 文本数据库

Install OrientDB on Ubuntu 16.04

Introduction Usually when we mention databases, we think of two main categories: relational databases that use a type of connection between users and applications called Structured Query Language (SQL) Management system (RelationalDatabaseManagementSystem, abbreviated RDBMS) and non-relational database management system (non-relational database management systems or NoSQL database). There are huge differences in how the two models process (store) data. Relational database management system in relational model

Jan 16, 2024 pm 12:08 PM

Linux Linux系统红帽 Linux命令 linux认证红帽linux linux教程 linux视频

What in-memory databases similar to Redis are available under Windows?

Which in-memory databases are used under Windows? In-memory databases similar to redis can be divided into relational in-memory databases and key-value in-memory databases. In actual applications, in-memory databases are mainly used with large relational databases such as Oracle or MySQL, focusing on performance. It functions like a cache and does not pay attention to data integrity and data consistency. Key-value-based in-memory databases are easier to use than relational ones, with better performance and scalability, so they are used more in applications than relational in-memory databases. Compare the functional features of mainstream in-memory databases FastDB, Memcached and Redis. The characteristics of FastDB include the following aspects: 1. FastDB does not support client-se

Jan 16, 2024 am 08:45 AM

开源内存数据库

Java crawler technology revealed: master these technologies and easily cope with various challenges

Revealing the secrets of Java crawler technology: To learn these technologies and easily cope with various challenges, specific code examples are required. Introduction: In today's information age, the Internet contains massive and rich data resources, which are of great value to enterprises and individuals. . However, it is not easy to obtain this data and extract useful information from it. At this time, the application of crawler technology becomes particularly important and necessary. This article will reveal the key knowledge points of Java crawler technology and provide some specific code examples to help readers easily cope with various challenges. one

Jan 11, 2024 pm 04:18 PM

大揭秘 Java爬虫技术应对挑战