我正在开发一个 gwt 项目，我使用 apache2、mod_proxy、mod_expires 和 mod_headers 设置代理来管理负载平衡和缓存。
所有资源，除了一个 XXX.cache.html 都很好。使用 Firefox/Firebug 或 chrome/developer Tools，我可以看到它是唯一不是“来自缓存”的文件。这是最大的文件
html 文件（由 gwt 编译器生成）不包含带有缓存参数的元数据。
我看不出有什么问题：
要求：
HeadersPreviewResponseCookiesTiming
Request URL:https://myproject.visionobjects.com//com.visionobjects.myscript.myProject/75797371ADDF8643260E34AC670CE051.cache.html
Request Method:GET
Status Code:200 OK
Request Headersview source
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3
Accept-Encoding:gzip,deflate,sdch
Accept-Language:fr-FR,fr;q=0.8,en-US;q=0.6,en;q=0.4
Cache-Control:max-age=0
Connection:keep-alive
Cookie:__utma=215925392.462910615.1307714119.1324051842.1332755699.3; MYSCRIPTWSSESSONID=myproject-node1ali0jv5kfn371vbphmbhekcx9.myproject-node1; __utma=255591828.1472483096.1335971537.1348212480.1349343132.10; __utmb=255591828.15.10.1349343132; __utmc=255591828; __utmz=255591828.1335971537.1.1.utmcsr=(direct)|utmccn=(direct)|utmcmd=(none)
Host:myproject.visionobjects.com
Pragma:no-cache
User-Agent:Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.13 (KHTML, like Gecko) Chrome/24.0.1284.2 Safari/537.13
回复：
Accept-Ranges:bytes
Cache-Control:max-age=31536000, public
Connection:Keep-Alive
Content-Encoding:gzip
Content-Type:text/html
Date:Thu, 04 Oct 2012 10:12:43 GMT
Expires:Fri, 04 Oct 2013 10:12:43 GMT
Keep-Alive:timeout=15, max=98
Server:Jetty(7.6.5.v20120716)
Transfer-Encoding:chunked
Vary:Accept-Encoding