HTTP APIs and Websocket APIs are two different types of APIs that are commonly used in web applications. While both APIs serve a similar purpose of providing a way for applications to communicate with each other, they have some differences. In this blog, we will explore the differences between HTTP APIs and Websocket APIs and discuss when to use each.

What are HTTP APIs?

HTTP (Hypertext Transfer Protocol) is the foundation of data communication on the World Wide Web. HTTP APIs allow applications to exchange data over the web using standard HTTP requests and responses. This type of API is often used for accessing and manipulating resources, such as databases or files, and performing CRUD (Create, Read, Update, Delete) operations.

HTTP APIs are stateless, meaning that each request and response is independent of any other request or response. This makes them easy to use and implement, but it also means that they are not well-suited for real-time communication.

What are Websocket APIs?

Websocket APIs provide a persistent, bidirectional communication channel between a client and a server. This means that the server can send data to the client without the client having to make a request first, and vice versa.

Websocket APIs are particularly useful for real-time applications, where a constant stream of data is required. They are also useful for applications that require low latency, as they allow data to be transmitted in near real-time.

Differences between HTTP APIs and Websocket APIs

The main differences between HTTP APIs and Websocket APIs can be summarized as follows:

• Communication Type: HTTP APIs are request/response-based, while Websocket APIs provide a persistent, bidirectional communication channel.

• Stateful vs. Stateless: HTTP APIs are stateless, meaning that each request and response is independent of any other request or response. Websocket APIs, on the other hand, are stateful, meaning that a connection is maintained between the client and server, allowing for a constant stream of data.

• Real-time vs. Traditional/Normal Applications: HTTP APIs are well-suited for traditional web applications that require CRUD operations, while Websocket APIs are best for real-time applications that require constant communication between the client and server.

When to use HTTP APIs

HTTP APIs are best used for traditional web applications that require CRUD operations or accessing and manipulating resources. They are also well-suited for applications that require a high level of caching, as each request and response can be cached independently.

Examples of when to use HTTP APIs include:

• Retrieving data from a database

• Updating a user's profile information

• Adding an item to a shopping cart

When to use Websocket APIs

Websocket APIs are best used for real-time applications that require constant communication between the client and server. They are particularly useful for chat applications, online gaming, and other applications that require low latency.

Examples of when to use Websocket APIs include:

• Online chat applications

• Multiplayer online games

• Real-time stock market tracking applications

Conclusion

In summary, both HTTP APIs and Websocket APIs serve an important role in modern web development. When deciding which type of API to use, it is important to consider the specific requirements of your application and choose the one that best fits your needs. By understanding the differences between HTTP APIs and Websocket APIs, you can make an informed decision that will help you build better web applications.