Backend Web Development

What is Backend Web Development?#

Backend web development, also known as server-side development, is the process of creating and maintaining the server-side logic and infrastructure that powers a website or web application. It involves writing code that handles data storage, processing, and communication with the client-side (the part of the application that users interact with).

When Do You Need a Backend Website?#

Businesses need backend web development for several reasons:

  • Data Management: Backend applications store, manage, and secure data, ensuring its integrity and accessibility.

  • Business Logic: Backend code implements the core business logic of the application, handling transactions, calculations, and decision-making.

  • User Authentication: Backend systems handle user authentication and authorization, controlling access to sensitive data and features.

  • API Development: Backend applications create and manage APIs (application programming interfaces) that allow other applications to interact with the system.

Here are some specific scenarios where businesses would need backend web development:

  • E-commerce Websites: Backend systems manage product catalogs, shopping carts, payment processing, and order fulfillment for online stores.

  • Social Media Platforms: Backend applications handle user profiles, posts, interactions, and data storage for social media platforms.

  • Streaming Services: Backend applications handle video encoding, transcoding, content delivery, and user subscriptions for streaming services.

  • Real-time Applications: Backend systems manage real-time data exchange, user interactions, and synchronization for real-time applications like chat messaging or collaborative editing tools.

What Tech We Use for Backend Web Development#

By utilizing the following technologies, you can build robust, scalable, and secure backend applications that effectively manage data and enforce access control.

NestJS#

NestJS is a progressive Node.js framework that builds upon the foundation of Express. It provides a number of features that make it well-suited for building enterprise-level applications, including:

  • Modular architecture: NestJS promotes a modular architecture, making it easy to organize and scale your application.

  • Dependency injection: NestJS uses dependency injection to manage dependencies between components, improving code reusability and testability.

  • Exception handling: NestJS provides a comprehensive exception handling mechanism, ensuring that your application can gracefully handle unexpected errors.

TypeORM#

TypeORM is an object-relational mapper (ORM) for TypeScript and Node.js. It provides a high-level abstraction for interacting with relational databases, simplifying database access and object manipulation

  • Object-relational mapping: TypeORM automatically maps objects to database tables, eliminating the need for manual SQL queries.

  • Data access layer: TypeORM provides a standardized data access layer, making it easy to interact with different database systems.

  • Query builder: TypeORM provides a powerful query builder, allowing you to construct complex SQL queries with ease.

PostgreSQL#

PostgreSQL is an open-source object-relational database management system (RDBMS) known for its reliability, scalability, and feature-richness.

  • ACID compliance: PostgreSQL adheres to the ACID (Atomicity, Consistency, Isolation, Durability) properties, ensuring data integrity.

  • Data types: PostgreSQL supports a wide range of data types, including JSON and arrays, making it versatile for various data storage needs.

  • Extensions: PostgreSQL offers a vast ecosystem of extensions, providing additional functionality and customization.

CASL#

CASL (pronounced /ˈkæsəl/, like castle) is an authorization framework for Node.js applications. It provides a flexible and granular approach to defining and enforcing access control rules.

  • Fine-grained control: CASL allows for fine-grained control over user permissions, enabling specific access rules for individual actions and resources.

  • Customizable policies: CASL supports customizable authorization policies, allowing you to tailor access control to specific application requirements.

  • Declarative syntax: CASL uses a declarative syntax for defining access rules, making it easier to understand and manage authorization policies.

Tencent COS#

Tencent Cloud Object Storage (COS) is a cloud storage service that provides secure, scalable, and cost-effective storage for your application's data.

  • Object storage: COS offers object storage capabilities, allowing you to store and manage unstructured data such as images, videos, and documents.

  • High scalability: COS is highly scalable, enabling you to store large volumes of data seamlessly.

  • Global availability: COS provides global availability, ensuring that your data is accessible from anywhere in the world.