By the way, this approach lied into my account approval request ACCAPP-97. Though that tool is just a statistical one, the equal approach can speed up interwiki business in times. This is how appropriate interwikis in be: and be-x-old: (their absence actually) are listed in tables for future processing.
 
>Using the replicated data instead of making http (api) requests should speed
>up the data collection phase of large inteerwiki groups from several minutes
>to a seconds or so.
 
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С уважением,
Павел Селіцкас/Paul Selitskas, skype: p.selitskas
Wizardist @ Wikimedia projects