Overview

OBS Authorization

If you use a Huawei Cloud OBS private bucket as the origin server, enable OBS authorization so that CDN can pull content from this bucket.

Copying Domain Configurations to Existing Domains

Copy the configuration of a domain name to existing domain names, to quickly modify domain configurations.

Copying Domain Configurations to New Domains

Quickly add and customize domain names by copying the configuration of one domain name to one or more new domain names.

Modifying Origin Server Settings

If the IP address or domain name of the origin server changes, origin server information is incorrect, or a standby origin server is needed, modify the origin server settings.

Modifying the Host Header

If the domain name you want CDN to pull content is not your acceleration domain name, set a host header. CDN regards an acceleration domain name as the host by default.

Modifying the Service Type

If the services of your domain name change and its service type cannot meet your requirements, you can change the service type on the CDN console.

Modifying the Service Area

If the region where your users are located changes, you can change the service area of your domain name to better match your services.

Allowing Clients to Access CDN Using IPv6

To allow users to access CDN PoPs using IPv6, enable IPv6 on the CDN console.

Origin Protocol

Configure the request protocol used by CDN for origin pull.

Origin SNI

If your origin server IP address is bound to multiple domains and CDN visits the origin server using HTTPS, set the Server Name Indication (SNI) to specify the domain to be visited by CDN.

Origin URL Rewrite

If the URLs of origin pull requests do not match the origin server URLs, rewrite the request URLs to improve the origin pull hit ratio.

Advanced Origins

Configure advanced origins to allow CDN to pull content of different resource types or paths from different origin servers.

Range Requests

Enable range requests to speed up large file distribution.

Redirect from Origin

Prevent CDN from directly sending a 301/302 redirect address to users when 301/302 redirect is performed for your origin server address. Force CDN to cache the requested content and then forward the content to users.

ETag Verification

If your resources on the origin server remain unchanged and you do not want CDN to pull the resources after the cache expires, enable ETag verification.

Origin Request Headers

Rewrite a header in an origin pull request on the CDN console.

Origin Response Timeout

Adjust the origin response timeout based on the features and service scenarios of your origin server.

Dynamic Content Pull Mode

By default, CDN pulls dynamic content from the origin server with the best performance. Choose to pull content from origin servers based on their weights.

SCM Authorization

Before configuring an SCM certificate, enable SCM authorization.

Configuring an HTTPS Certificate

Add a certificate for HTTPS acceleration.

HTTPS Certificate Requirements

Learn how to combine and upload certificates issued by different authorities.

HTTPS Certificate Format Conversion

Convert certificates in other formats to the PEM format that CDN supports.

TLS Versions

Enable or disable TLS versions as required.

Force Redirect

Force clients to request content from CDN PoPs using HTTP or HTTPS.

HSTS

Force clients (such as browsers) to use HTTPS to access your server, improving access security.

HTTP/2

Understand the background and advantages of HTTP/2.

OCSP Stapling

Allow CDN to cache the status of online certificates in advance and return the status to browsers. Browsers do not need to query the status from CAs, accelerating the verification.

QUIC

Configure the QUIC protocol to improve transmission security, reduce transmission and connection latency, and prevent network congestion.

Client Certificates

Configure a client certificate to enforce mutual certificate authentication between clients and CDN PoPs, securing website communication.

PoP Cache Rules

• Set the time to live (TTL) and priority for different resources to increase the hit ratio and reduce the back-to-source rate.

Browser Cache TTL

Set a browser cache TTL, during which users can obtain content directly from their browser cache (if available), reducing origin pulls.

Status Code Cache TTL

Cache error status codes returned by the origin server to CDN PoPs for a specified TTL. CDN returns the error codes to users when they request resources within this TTL, reducing the origin pull ratio and origin server pressure.

Access URL Rewrite

Set access URL rewrite rules to redirect user requests to the URLs of cached content.

Shared Cache Groups

Configure a shared cache group with a primary domain name to share its cache with other domain names. This improves the cache hit ratio when these domain names host the same resources.

Referer Validation

Identify and filter visitors to restrict their access.

IP ACL

Filter out requests from specific IP addresses.

User-Agent ACL

Filter out requests from specific user agents.

Geo-blocking

Prevent users in certain geographical locations from accessing your content.

Token Authentication

Protect your website resources from being downloaded by malicious users.

Remote Authentication

Allow CDN to forward user requests to a specific server for authentication, to prevent malicious resource download.

IP Access Frequency

Restrict the number of times that a single IP address requests a URL from a PoP per second to defend against CC attacks and malicious theft.

HTTP Header Settings (Cross-origin Requests)

Customize values of HTTP response headers for your website.

Custom Error Pages

Customize error pages returned to user clients.

Smart Compression

Compress static content on your websites by reducing file size. This speeds up file transfer and saves you a lot of bandwidth.

WebSocket

If you have enabled whole site acceleration in scenarios such as on-screen commenting, collaborative session, market data broadcast, sports live update, online education, and IoT, configure WebSocket to implement long-term bidirectional data transmission.

Request Rate Limiting

Limit the user request rate within a specific range to reduce costs and the risk of burst bandwidth.

Usage Cap

Set a traffic or bandwidth cap for a domain name. When the usage reaches the cap, CDN acceleration will be disabled for the domain name, reducing high bills caused by traffic theft or attacks.

Video Seek

Configure this item to allow users to seek to a certain position in a video without affecting the playback effect.