API Redirects and Rewrites: Practical Examples

Introduction to API Redirects and Rewrites

In the realm of API management, configuring redirects and rewrites is essential for ensuring that requests are directed to the appropriate endpoints. This not only enhances user experience but also optimizes server load and improves overall API performance. Below are three diverse and practical examples illustrating how to effectively configure API redirects and rewrites.

Example 1: Redirecting Legacy API Endpoints

Use Case

When updating an API, it’s common to retire older endpoints while introducing new ones. Redirecting requests from legacy endpoints to new ones ensures that existing users can still access the functionality without disruption.

Example

{
  "version": "1.0",
  "redirects": [
    {
      "from": "/api/v1/old-endpoint",
      "to": "/api/v2/new-endpoint",
      "status": 301
    }
  ]
}

In this example, any request made to /api/v1/old-endpoint is permanently redirected to /api/v2/new-endpoint using a 301 status code, indicating that the resource has been moved permanently.

Notes

• Consider using a 302 status code for temporary redirects if the endpoint may return in the future.
• Always document changes to help users transition smoothly.

Example 2: Rewriting API Requests for Versioning

Use Case

API versioning is vital for maintaining backward compatibility. Rewriting incoming requests allows developers to handle different API versions seamlessly without changing the client-side code.

Example

{
  "version": "1.0",
  "rewrites": [
    {
      "from": "/api/v1/users",
      "to": "/api/v2/users"
    }
  ]
}

This configuration rewrites requests aimed at /api/v1/users to /api/v2/users, allowing the server to handle the newer version of the API while still accepting requests for the older version.

Notes

• Ensure that all necessary changes in the API logic are implemented for the new version.
• Consider implementing a deprecation policy for older versions.

Example 3: Redirecting Based on Query Parameters

Use Case

Sometimes, it’s necessary to redirect requests based on specific query parameters, such as redirecting mobile users to a dedicated mobile API. This can enhance performance and user experience.

Example

{
  "version": "1.0",
  "redirects": [
    {
      "from": "/api/products?device=mobile",
      "to": "/api/mobile/products",
      "status": 302
    }
  ]
}

In this case, if a request is made to /api/products?device=mobile, the server responds with a temporary redirect to /api/mobile/products. This ensures mobile users receive optimized content tailored for their devices.

Notes

• Test your redirects thoroughly to avoid infinite redirect loops.
• Monitor analytics to understand the impact of your redirects and rewrites on traffic patterns.