Edge Developer Platform
  • Edge Functions
    • Overview
    • Getting Started
    • Operation Guide
      • Function Management
      • Web Debugging
      • Function Trigger
      • Environment Variable
      • Code Replica
    • Runtime APIs
      • addEventListener
      • Cache
      • Cookies
      • Encoding
      • Fetch
      • FetchEvent
      • Headers
      • Request
      • Response
      • Streams
        • ReadableStream
        • ReadableStreamBYOBReader
        • ReadableStreamDefaultReader
        • TransformStream
        • WritableStream
        • WritableStreamDefaultWriter
      • Web Crypto
      • Web standards
      • Images
        • ImageProperties
    • Sample Functions
      • Example Overview
      • Obtaining Client URL Information
      • Customization Based on Client Geo Location
      • Obtaining Client Geo Location Information
      • Batch Redirect
      • URL rewrite based on regular expressions
      • Returning an HTML Page
      • Returning a JSON Object
      • Fetch Remote Resources
      • Authenticating a Request Header
      • Modifying a Response Header
      • Performing an A/B Test
      • Setting Cookies
      • Performing Redirect Based on the Request Location
      • Using the Cache API
      • Caching POST Requests
      • Responding in Streaming Mode
      • Merging Resources and Responding in Streaming Mode
      • Protecting Data from Tampering
      • Rewriting a m3u8 File and Configuring Authentication
      • Adaptive Image Resize
      • Image Adaptive WebP
      • Customize Referer restriction rules
      • Remote Authentication
      • HMAC Digital Signature
      • Naming a Downloaded File
      • Obtaining Client IP Address
      • Complex origin-pull URL rewriting
      • Web Bot Auth
    • Practical Tutorial
      • Overview
      • Origin retrieval based on user IP/geographic location
        • EdgeOne Implementation of Session Persistence Based on Client IP Addresses
        • EdgeOne Implementation of Origin-Pull Based on Client's Geo Location
      • APK dynamic packaging
        • EdgeOne enables dynamic packaging of Android APKs.
          • Feature Overview
          • Step 1: Preprocess the Android APK Parent Package
          • Step 2: Write the Channel Information into the APK Package with EdgeOne Edge Functions
      • Canary Release and Region-specific Execution
      • Adaptive Image Format Conversion via Edge Functions
      • Two Ways to Implement CDN Origin-pull Via Edge Function: Fetch and Passthrough
  • KV Storage
    • Overview
    • Operation Guide
  • Edge reasoning
    • Edge Inference Overview
    • Quick Guide
Docs Overview/
Edge Developer Platform/
Edge Functions/
Practical Tutorial/
Overview/

Overview

Title
Practice Overview
This article introduces how to automatically convert image formats using edge functions without modifying the original client request URL. It describes how to automatically determine the image file format to return based on the User-Agent header in the client request and trigger the image format conversion.
This article explains how to utilize EdgeOne 's edge functions and rule engine to ensure that requests from the same Client IP address are always forwarded to the same backend origin server , thus maintaining the continuity of the session and the consistency of data.
This article explains how to utilize EdgeOne 's edge functions and rule engine to achieve origin retrieval to a specified origin server based on the user geographic location.
This article describes how to implement two CDN origin-pull methods through EdgeOne's Edge Functions: Fetch and Passthrough.
For enterprise and developer customers who need to frequently iterate business logic or conduct sophisticated global operations, edge functions provide flexible canary release and regional execution solutions when facing challenges such as high risk of launching new functions, difficulty in migrating old functions, and differences in compliance and marketing strategies in different regions.