Original Post: Essential Node.js backend examples for developers in 2024
In 2024, Node.js remains a leading runtime for scalable and efficient backend applications, challenged by rising runtimes like Bun. This article introduces essential Node.js examples showcasing advanced JavaScript features through practical code snippets.
Chapters:
- Streams and Async Iterables: Utilizing the WHATWG Streams Standard and Web Streams API for efficient data handling.
- Crypto Module: Securing applications by validating webhook signatures using the built-in Node.js crypto module.
- Buffers: Handling raw binary data and leveraging Buffer API methods like
.from,.alloc, and.write. - Symbols: Using JavaScript Symbols for encapsulation, preventing property name collisions in objects.
- Template Literals: Generating dynamic HTML and SQL queries using template literals and tagged template literals.
Key Examples:
- Streaming Data: Example of streaming data from OpenAI SDK using async iterables.
- Crypto Module Example: Validating webhook signatures with HMAC and secure comparison to prevent timing attacks.
- Buffers Example: Concatenating buffers and reading an image file to analyze with OpenAI API using Node.js Buffer API.
- Using Symbols: Creating private properties in classes and encapsulating plugin metadata in Fastify using Symbols.
- Template Literals: Generating SQL queries safely with Vercel’s PostgreSQL library and dynamic HTML content with Fastify.
The article concludes by recommending resources on Node.js security practices, including securing code, dependencies, and Docker container images with Snyk. For the full source code and examples, visit the provided GitHub repo.
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