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안녕하세요! 오늘은 대용량 데이터 처리의 강자, Spring Batch에 대해 알아보겠습니다.Spring Batch가 뭔가요? 🤔은행 입출금 명세서를 처리하는 것을 상상해보세요:매일 밤 수백만 건의 거래 내역을 처리실시간으로는 불가능한 대량의 데이터 처리실패 시 재시작과 중단점 복구가 필요Spring Batch는 이런 대용량 배치 처리를 위한 프레임워크입니다!핵심 개념 💡1. Job@Beanpublic Job importUserJob(JobBuilderFactory jobs) { return jobs.get("importUserJob") .start(step1()) .next(step2()) .build();}배치 처리의 가장 큰 단위하나의 '업무 수행 단위..

Imagine a busy restaurant with different staff roles. app.use() is like the general staff that greets and assists all customers, while app.get() is like a specialized chef who only prepares specific dishes when ordered.The Big PictureIn Express.js, both app.use() and app.get() are methods used for handling requests, but they serve different purposes and behave differently in terms of when and ho..

Imagine a bustling city with well-planned districts, efficient transportation, and clear signage - that's the essence of a well-organized Next.js app using the App Router web applications. The Big Picture:Next.js's App Router represents a paradigm shift in how React applications are structured and routed. It's like upgrading from a simple street grid to a multi-level, interconnected city infrast..

OAuth is a protocol that allows secure authorization in a simple and standardized way from web, mobile, and desktop applications.The Big PictureImagine you want to give your friend access to a specific photo album in your locked drawer, but you don't want to give them the key to your entire house. OAuth works in a similar way for online services. It allows one application (the client) to access ..

To create a backend app using Express.js that parses an Excel document and stores the data into a MySQL database hosted on AWS, you need to break down the task into several steps involving setting up the server, parsing the Excel file, and interacting with the MySQL database. Let's walk through each step with technical details and analogies.The Big PictureImagine you are building a system where ..

In this response, we'll compare NestJS and ExpressJS, two popular Node.js frameworks, focusing on their architectures, features, and use cases to help you understand which one might be better suited for your projects.The Big PictureImagine you need to build a house. ExpressJS is like having a set of basic tools: a hammer, nails, and wood. You can build a house, but you have to design and constru..

NestJS is a progressive Node.js framework for building efficient, reliable, and scalable server-side applications.The Big PictureThink of NestJS as a well-organized toolkit for building the backend of web applications. It's like having a well-structured blueprint for constructing a house, where every part has a specific place and function, ensuring everything fits together seamlessly.Core Concep..

Creating an API with Next.js that connects to an RDBMS in AWS and is packaged to deploy on an AWS EC2 instance involves several steps, including setting up the project, connecting to the database, and deploying the application.The Big PictureImagine you’re building a vending machine (your Next.js API) that needs to connect to a warehouse (your RDBMS in AWS) to check stock and prices. Once the ve..

An API route in Next.js is used to create serverless functions that handle backend logic, such as fetching data from a database or an external API, without the need for a separate backend server.The Big PictureImagine you have a vending machine (your application) that provides different types of snacks (data). An API route in Next.js acts like the internal mechanism of the vending machine, handl..

While templating engines like EJS are great for generating dynamic server-rendered HTML, React offers a more powerful and flexible approach to building interactive and dynamic user interfaces by utilizing client-side rendering and component-based architecture.The Big PictureThink of traditional templating engines as a well-organized library where you can find and read static books (server-render..