My friend said “Look, the HTTP response from Goolge is strange!”.

Google’s Web site responds:

HTTP/1.1 200 OK
Server: GWS/2.0
Date: Tue, 21 May 2002 12:34:56 GMT
Transfer-Encoding: chunked
Content-Encoding: gzip
Content-Type: text/html
Cache-control: private
Set-Cookie: PREF=ID=58c005a7065c0996:TM=1021283456:LM=1021283456:S=OLJcXi3RhSE;
domain=.google.com; path=/; expires=Sun, 17-Jan-2038 19:14:07 GMT

(Web content compressed with gzip)

I told him “Have you experience the web page slow? then try to use HTTP compression”.
Of interest in this response is that the Web content is of a format that cannot be printed, binary. Because my browser specified in its request that it accepts gzip (GNU zip) encoding, Google chose to encode the response with gzip. This is a popular compression algorithm that allows for a quicker transfer due to the smaller size of the HTTP response. Again this is very common skill but it’s useful.

Reference:
1. Using HTTP Compression

2. HTTP Compression Speeds up the Web

3. Compress data streams in Java with GZIP and Zip

4. Compressing web content with GZip and Filter

5. Speed up your Web pages

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