Check availability of the mobile version for 1000000 websites

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Taken as a basis TOP 1M domains of Alexa: http://s3.amazonaws.com/alexa-static/top-1m.csv.zip

The test machine:

• Virtual machine Intel(R) Core(TM) i7 CPU @ 3.4 GHz with 2 dedicated cores, 3 Gb RAM and bandwidth 100 mbit/s. OS Windows 7 x64.

Task:

Spoiler: Preset

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• The source file with requests contains data in the format <alexa-rank>, <domain>, a million entries, each domain on a new line. Using the Query Builder separate the domain and its rank.
• Used parser Net::HTTP, to which is input the link with inserted domain to check for the mobile version. Mobile version check here: https://www.google.com/webmasters/tools/mobile-friendly/
• Using a proxy is enabled.
• The result, which in this case is all domains that do not have a mobile version, are saved to the file top-1m-without-mobile-ver.txt

Working task:

Statistics:

• The speed of parsing was about 2000 domains per minute
• Failed requests just 26 of 1000000
• Parsing passed in 1000 threads
• Elapsed time: 8 hours 7 minutes

Result:

• 40.98% of the million most visited sites do not have a mobile version!

File with the list of websites without mobile versions: http://files.a-parser.com/top-1m-without-mobile-ver.txt