当我们在webpagetest.org上对我们的网站进行测试时，它抱怨资产未启用缓存。
但是，在资产的http响应上，它说（这是用于png图像）：
X-MS-InvokeApp: 1; RequireReadOnly
Content-Length: 440397
Access-Control-Allow-Headers: Content-Type
X-Content-Type-Options: nosniff
X-Powered-By: ASP.NET
request-id: 64d07b9e-ffa1-e01d-fb05-50129d1cf017
Accept-Ranges: bytes
X-AspNet-Version: 4.0.30319
MicrosoftSharePointTeamServices: 15.0.0.4687
SPRequestGuid: 64d07b9e-ffa1-e01d-fb05-50129d1cf017
Server: Microsoft-IIS/8.5
Last-Modified: Mon, 09 Jul 2018 19:23:54 GMT
ETag: "{C8CEDE69-A926-43F4-94EE-D3542A19A8F8},1pub"
Cache-Control: public, max-age=604799
Date: Wed, 18 Jul 2018 00:45:33 GMT
X-Frame-Options: SAMEORIGIN
Access-Control-Allow-Methods: GET, POST, PUT, DELETE, OPTIONS
Content-Type: image/png
Access-Control-Allow-Origin: *
我想念什么吗？