scraper takes too long to run

[mrcnc]

Currently, on my machine with a 2.2 GHz i7 Processor, it's crawling ~600 pages/minute. Since there are ~165000 parcels, it will take ~4.5 hours to complete. This is too long and it would be a lot better if we could speed up this process.

[bhelx]

Your mileage may vary, but doing 8 concurrent requests was a good number for me and their server had no noticeable dip in latency.

[mrcnc]

This will most likely require some profiling b/c the default number of concurrent requests per domain is already 8.