Apache gzip 压缩

Apache gzip 压缩

我有一个继承的 Apache 2.2.17 服务器在 Ubuntu 上运行,我需要启用压缩。我已确保模块已加载:

apachectl -t -D DUMP_MODULES
Loaded Modules:
...
deflate_module (shared)
headers_module (shared)
setenvif_module (shared)
...

然后我制定了http.conf以下规则:

<IfModule deflate_module>
    SetOutputFilter DEFLATE

        <IfModule setenvif_module>
        # Netscape 4.x has some problems
        BrowserMatch ^Mozilla/4 gzip-only-text/html

        # Netscape 4.06-4.08 have some more problems
        BrowserMatch ^Mozilla/4\.0[678] no-gzip

        # MSIE masquerades as Netscape, but it is fine
        BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

        # NOTE: Due to a bug in mod_setenvif up to Apache 2.0.48, the above regex won’t work. You can use the following
        # workaround (comment the above line and uncomment the below line) to get the desired effect:
        # BrowserMatch \bMSI[E] !no-gzip !gzip-only-text/html

        # Don’t compress already-compressed files
        SetEnvIfNoCase Request_URI .(?:gif|jpe?g|png)$ no-gzip dont-vary
        SetEnvIfNoCase Request_URI .(?:exe|t?gz|zip|bz2|sit|rar)$ no-gzip dont-vary
        SetEnvIfNoCase Request_URI .(?:avi|mov|mp3|mp4|rm|flv|swf|mp?g)$ no-gzip dont-vary
        SetEnvIfNoCase Request_URI .pdf$ no-gzip dont-vary
    </IfModule>

    <IfModule headers_module>
        # Make sure proxies don’t deliver the wrong content
        Header append Vary User-Agent env=!dont-vary
    </IfModule>
</IfModule>

现在,如果我使用 python 或 curl 检索,HEAD我会得到一个 gzip 响应(这只是针对一个.txt文件,但在整个站点是一致的):

Date: Mon, 06 May 2013 11:53:31 GMT
Server: Apache/2.2.17 (Ubuntu)
Last-Modified: Sun, 05 May 2013 12:37:23 GMT
ETag: "2412002-129c6-4dbf7d88766c0"
Accept-Ranges: bytes
Vary: Accept-Encoding,User-Agent
Content-Encoding: gzip
Content-Length: 32607
Content-Type: text/plain

但是如果我执行POSTGET,则不会得到 gzip 返回:

Date: Mon, 06 May 2013 11:53:25 GMT
Server: Apache/2.2.17 (Ubuntu)
Last-Modified: Sun, 05 May 2013 12:37:23 GMT
ETag: "2412002-129c6-4dbf7d88766c0"
Accept-Ranges: bytes
Vary: Accept-Encoding,User-Agent
Content-Type: text/plain
Content-Length: 76230

更新: 以下是来自的标头Firefox 20。Firebug 和 Google 确认正在请求 gzip:

Date: Tue, 07 May 2013 16:57:01 GMT
Server: Apache/2.2.17 (Ubuntu)
X-Powered-By: PHP/5.3.5-1ubuntu7.10
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Vary: Accept-Encoding,User-Agent
Keep-Alive: timeout=15, max=98
Connection: Keep-Alive
Content-Type: text/html
Content-Length: 19922

这件事已经困扰我好几天了,如果能得到任何帮助我都会非常感激。

谢谢

答案1

事实证明,配置运行得并不好,网站总是选择 deflate 而不是 gzip。因此,我看不到它工作。我简化了我的http.conf,并在 Linux 上启用了日志,显示它确实在工作:

LoadModule deflate_module /usr/lib/apache2/modules/mod_deflate.so

SetOutputFilter DEFLATE
SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ \
    no-gzip dont-vary
SetEnvIfNoCase Request_URI \
    \.(?:exe|t?gz|zip|bz2|sit|rar)$ \
    no-gzip dont-vary
SetEnvIfNoCase Request_URI \.pdf$ no-gzip dont-vary

BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html

DeflateFilterNote Input input_info
DeflateFilterNote Output output_info
DeflateFilterNote Ratio ratio_info
LogFormat '"%r" %{output_info}n/%{input_info}n (%{ratio_info}n%%)' deflate
CustomLog /var/log/apache2/deflate_log deflate

上一节写了一条日志,显示某些内容确实正在压缩。有些内容仍然没有压缩,但我现在相信这是由 php 的运行方式引起的。我将研究使用 php 压缩来更好地处理这个问题。

并感谢 Marcel 和 Chris S 帮助我解决这个问题。

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