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- Billing Overview
- Basic Service Fees
- Value-added Service Fees
- Related Tencent Cloud Services
- Extra Package Description (Prepaid)
- Subscriptions
- Renewals
- Overdue and Expiration Policies
- Refund Policy
- Usage Cap Policy
- EdgeOne Plan Upgrade Guide
- Comparison of EdgeOne Plans
- About "clean traffic" billing instructions
- Getting Started
- Domain Service
- Site Acceleration
- Origin Configuration
- Edge Functions
- Overview
- Getting Started
- Operation Guide
- Runtime APIs
- Sample Functions
- 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
- Custom Referer Anti-leeching
- Remote Authentication
- HMAC Digital Signature
- Naming a Downloaded File
- Obtaining Client IP Address
- Best Practices
- Security Protection
- Overview
- DDoS Protection
- DDoS Protection Overview
- Exclusive DDoS Protection Usage
- Configuration of Exclusive DDoS protection Rules
- Web Protection
- Bot Management
- Rules Template
- IP and IP Segment Grouping
- Origin Protection
- Alarm Notification
- Rule Engine
- L4 Proxy
- Data Analysis&Log Service
- Tool Guide
- Best Practices
- API Documentation
- History
- Introduction
- API Category
- Making API Requests
- Site APIs
- Acceleration Domain Management APIs
- Site Acceleration Configuration APIs
- Alias Domain APIs
- Security Configuration APIs
- Layer 4 Application Proxy APIs
- CreateL4Proxy
- ModifyL4Proxy
- ModifyL4ProxyStatus
- DescribeL4Proxy
- DeleteL4Proxy
- CreateL4ProxyRules
- ModifyL4ProxyRules
- ModifyL4ProxyRulesStatus
- DescribeL4ProxyRules
- DeleteL4ProxyRules
- CreateApplicationProxy
- ModifyApplicationProxy
- ModifyApplicationProxyStatus
- DescribeApplicationProxies
- DeleteApplicationProxy
- CreateApplicationProxyRule
- ModifyApplicationProxyRule
- ModifyApplicationProxyRuleStatus
- DeleteApplicationProxyRule
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Overview
Range GETs can be enabled to reduce the consumption of large file origin-pulls and response time.
Why can Range GETs improve the efficiency of large file delivery?
When caching large files, nodes will split them into smaller parts in order to improve cache efficiency. All parts cached expire at the same time and follow the node cache TTL configuration. Range requests are also supported. For example, if a client request carries the HTTP header
Range: bytes = 0-999, only the first 1000 bytes of the file will be returned to the user.If Range GETs is enabled: When parts of the file are requested and their caches expire, nodes only pull and cache the requested parts and return them to the user, so that origin-pull consumption and response time are greatly reduced.
If Range GETs is disabled, when the client requests only parts of a file, the node will pull only the requested parts according to the
Range header in the client request, cache them, and return them to the client at the same time. However, this may not be able to achieve the optimal performance. In large file scenarios, we recommend you enable Range GETs.Use Cases
You can use Range GETs to cache large static files in either of the following cases: The origin server supports Range requests, or you use a Tencent Cloud COS origin server and do not apply any data processing methods such as image processing.
Notes
The origin server must support Range requests, or the origin-pull may fail.
The origin-pull may fail if Range GETs is enabled for small static files, or if you enable it while using a Tencent Cloud COS origin server and data processing methods such as image processing.
Directions
For instance, you have a video service website that provides online video watching through
video.example.com. The videos are mainly long videos with large files. In order to reduce traffic consumption of large files and improve origin-pull speed, you need to support range requests and origin-pull. You can perform the following steps:1. Log in to the EdgeOne console, click Site List in the left sidebar and click the Site to be configured in the site list.
2. On the site detail page, click on Rule Engine.
3. On the rule engine management page, click on Create rule to enter the new rule's editing page. In this scenario, you can operate as follows:
3.1 On the rule editing page, select the Matching type as
HOST equals video.example.com.3.2 Click on Action, in the displayed operation list, choose the operation as Range GETs.
3.3 Click on On/Off to enable Range GETs.
4. Click on Save and publish to complete the configuration of this rule.
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