网站怎么用CDN加速

# 创建CDN加速域名
curl -X POST https://cdn.tencentcloudapi.com/instance \
-H "Authorization: TC3-HMAC-SHA256 Credential=AKIDz8krbsJ5yKBZQpn74WFkmLPx3EXAMPLE/2019-03-26/cdn/tc3_request, SignedHeaders=content-type;host;x-tc-action;x-tc-timestamp;x-tc-version, Signature=fe5f80f77d5fa3beca038a248ff04855e44342fe5b9c626e710c8c888f69e6958" \
-H "Content-Type: application/json" \
-H "Host: cdn.tencentcloudapi.com" \
-H "X-TC-Action: CreateInstance" \
-H "X-TC-Timestamp: 1553546400" \
-H "X-TC-Version: 2019-03-26" \
-d '{
    "InstanceName": "example-cdn",
    "Origin": {
        "Domain": "www.example.com",
        "OriginType": "domain"
    },
    "Domain": "cdn.example.com",
    "Protocol": "http",
    "CacheConfig": {
        "CacheType": "all",
        "DefaultTTL": 3600
    }
}'