What is uri in rest api?

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In the world of web development and APIs, URI (Uniform Resource Identifier) plays a crucial role. URI is an essential concept in REST (Representational State Transfer) API architecture. It is used to identify and locate resources on the web. This article will delve deeper into the concept of URI in REST API, explaining its purpose and significance.

Understanding URI in REST API

What is a URI?: A URI is a string of characters that identifies a particular resource. It provides a way to locate and access resources on the internet. A URI consists of two main components: the scheme and the path. The scheme indicates the protocol used to access the resource, such as HTTP or HTTPS. The path represents the specific location of the resource within the server’s file system.

URI Structure: A typical URI structure consists of several components. The scheme is followed by a colon and two forward slashes, indicating the beginning of the authority section. The authority section includes the hostname and, optionally, the port number. After the authority section, the path identifies the specific resource. Additional components, such as query parameters or fragments, can be appended to the path to provide more information or functionality.

URI vs URL: URI and URL (Uniform Resource Locator) are often used interchangeably, but they have slightly different meanings. While a URI identifies a resource, a URL provides the means to access that resource. In other words, a URL is a specific type of URI that includes the network location of the resource. Therefore, all URLs are URIs, but not all URIs are URLs.

URI in REST API: In the context of REST API, URIs are used to represent resources and define the endpoints for accessing those resources. Each resource in a REST API is typically associated with a unique URI. For example, a REST API for a blogging platform might have URIs like “/posts” to represent a collection of blog posts and “/posts/{id}” to represent a specific blog post identified by its ID.

URI Design Best Practices: When designing URIs for a REST API, it is important to follow certain best practices. URIs should be descriptive, meaningful, and consistent. They should use nouns to represent resources rather than verbs. For example, instead of using “/getPosts”, it is better to use “/posts” to retrieve all posts. Additionally, URIs should be hierarchical and organized in a logical manner to reflect the relationships between resources.


In conclusion, URI (Uniform Resource Identifier) is a fundamental concept in REST API architecture. It serves as a unique identifier for resources on the web and plays a crucial role in defining the endpoints for accessing those resources. Understanding URI structure and following best practices in URI design are essential for building well-structured and maintainable REST APIs.


– developer.mozilla.org
– restfulapi.net
– www.w3.org