🎯 My 2025 Resolutions:
🔹️Solve daily POTD on #LeetCode
🔹️Complete #gfg160 challenge.
🔹️Commit 12 new repo on #GitHub
🔹️Kickstart my PG at #iitmadras
🔹️Start my first #startupindia
🔹️Build #1M worth portfolio.
2025 is all about consistency & growth! ✨
#Goals2025
Had a great time attending this fireside chat with @mrgirish at IIT Madras!
Grateful to @tllshankar for not only inviting but also sharing an insightful session on key AI trends and had some truly inspiring conversations with people bringing different ideas!
Thank you for great response. Watch community page for update 👉 https://t.co/e0qlYVnGa0
Sincere thanks to the speakers ( @anjfathu , @manikandank276 , Lakshmanan Ganapathy ) , partner ( @Tekclan4 ) and volunteers.
1. What is an API?
An API, or Application Programming Interface, is a set of rules and protocols that allows different software applications to communicate with each other.
It defines the methods and data structures that developers can use to interact with a service, library, or platform.
2. Why are APIs important?
APIs are crucial for software development because they enable developers to leverage the functionality of existing software components, integrate with third-party services, and build more powerful and feature-rich applications.
They promote code reusability and foster collaboration between developers and organizations.
3. How do APIs work?
APIs work by sending and receiving requests.
A client application (such as a mobile app or website) sends a request to an API server.
The API server then processes the request and returns a response.
The response can be data, such as a list of products or a user's profile information, or it can be a function, such as sending an email or creating a new user account.
4. Types of APIs
There are various types of APIs, with RESTful APIs being one of the most common.
Others include SOAP, GraphQL, and WebSockets, each designed for specific use cases and technologies.
5. API Components
- Endpoints:
The specific URLs or URIs that an API exposes for interaction.
- Requests:
How you ask the API for information or to perform a task.
- Responses:
The data and information returned by the API after processing your request.
6. Authentication and Authorization
APIs often require authentication to ensure that only authorized users or applications can access their resources.
Common authentication methods include API keys, tokens, and OAuth.
7. RESTful APIs
Representational State Transfer (REST) is an architectural style for designing networked applications.
It relies on a few key principles:
- Statelessness:
Each request from a client to the server must contain all the information required to understand and process the request.
- Resource-Based:
REST APIs use resources (e.g., objects, data) as their main abstractions.
- CRUD Operations:
REST APIs map to CRUD (Create, Read, Update, Delete) operations, commonly using HTTP methods (GET, POST, PUT, DELETE).
8. HTTP Methods
- GET: Retrieve data from the server.
- POST: Create new data on the server.
- PUT: Update existing data on the server.
- DELETE: Remove data from the server.
9. URL Structure and Resource Naming
RESTful URLs should be meaningful and follow a hierarchical structure, making them easy to understand and navigate.
10. Status Codes
HTTP status codes provide information about the result of the API request.
Common codes include 200 (OK), 201 (Created), 400 (Bad Request), and 404 (Not Found).
11. Best Practices for RESTful APIs
- Use nouns for resource names in URLs.
- Use HTTP status codes appropriately.
- Implement versioning for APIs.
- Provide clear and consistent documentation.