Tag: FastAPI
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Integrating LangChain with FastAPI: Building LLM-Powered APIs
Large Language Models (LLMs) are transforming the web application landscape, and frameworks like LangChain make harnessing their power easier than ever. If you’re already leveraging FastAPI to build your APIs, you can seamlessly combine it with LangChain to introduce advanced language capabilities into your backend services. What is LangChain? LangChain is a Python framework designed…
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Implementing Versioned APIs in FastAPI: Structure for Flexibility and Reusability
Versioning your API is crucial for maintaining backward compatibility as your application evolves. FastAPI makes API versioning straightforward, and with some attention to your project structure, you can maximize reusability and flexibility for future iterations. Why Version Your API? API versioning allows you to make breaking changes to your endpoints while ensuring existing clients are…
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Custom Dependency Classes in FastAPI: Cleaner and More Reusable Code
As FastAPI projects grow, code organization and reusability become increasingly important. While FastAPI’s dependency injection system is very flexible, you’ve probably noticed that many dependencies are simple functions. But did you know you can write dependency classes, too? In this article, I’ll show you how and why to use classes as dependencies for cleaner, testable,…
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Fine-Tuning FastAPI Path Parameters for Better API Design
As a backend web developer working extensively with FastAPI, one of the nuances I often encounter is handling path parameters with precision. While FastAPI provides intuitive syntax for defining routes, leveraging its advanced parameter options can make your APIs more robust, maintainable, and user-friendly. In this article, I’ll share practical tips for fine-tuning path parameters…
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Leveraging FastAPI Middleware for Cross-Cutting Concerns
FastAPI’s elegant architecture makes it easy to build robust APIs, but as your applications grow, you’ll inevitably face the challenge of managing cross-cutting concerns like logging, request modification, security, and more. This is where FastAPI’s middleware system shines. In this article, I’ll walk you through the essentials of using middleware in FastAPI, including practical use…
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Structuring FastAPI Projects for Maintainability and Scalability
Hi, I’m Fast Eddy! As a backend web developer who spends most of my time with FastAPI, I’ve learned that maintainable, scalable project structure is the foundation of any robust API. Let’s break down how you can structure your FastAPI projects so they remain clear, scalable, and ready for growth—whether you’re working solo or leading…
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Rate Limiting Strategies in FastAPI: Protecting Your API from Abuse
Hi everyone! Fast Eddy here. Today, I’m tackling an important topic that every API developer needs to consider: how to implement rate limiting in FastAPI applications. Without proper rate limiting, your API could be susceptible to abuse, accidental overload, or even denial-of-service attacks. In this article, I’ll explore some effective strategies and walk through a…
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Managing Environment Variables in FastAPI Applications
As a backend developer, one of the foundational best practices is to keep sensitive information such as API keys, database credentials, and configuration settings out of your codebase. Instead, we use environment variables. In this article, I’ll walk you through practical techniques for managing environment variables effectively in your FastAPI projects. Why Use Environment Variables?…
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Enhancing FastAPI Performance with Caching Strategies
When building APIs with FastAPI, performance and responsiveness are paramount, especially as your application scales. One tried-and-tested way to boost speed and decrease database or computation load is by implementing caching. In this article, I’ll walk you through practical caching strategies for FastAPI applications, highlighting both in-memory and external solutions. Why Cache? Caching is all…
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Getting Started with FastAPI: A Modern Python Web Framework
Python has a fantastic ecosystem for building web applications, but in recent years, one framework has rapidly gained popularity among Python developers: FastAPI. In this article, we’ll explore what FastAPI is, why you might choose it for your next project, and how to set up a basic web API in just a few lines of…