Car park data problems

We've recenty been havng some problems with our feeds of car park usage data. Our feed of data for the City Centre car parks wasn't working between 2018-05-03 and 2018-06-04, and seperately our feed of data for the Park & Ride car parks hasn't been working since 2018-05-21 and has just been fixed today (2018-06-12). Both are now working, but we have lost the historical data that would otherwise have been collected during these periods.

Seperately, we've ovserved problems with the data we are recieving for several car parks. The number of spaces reported as used in the P&R Madingley Road and P&R Milton car parks never decreases during the day, and the number of spaces reported as used in the P&R Newmarket Road Front car park seems to stick at the same value for protracted periods. We've reported these to the relavent council.

The city-centre car park feed failed again between 2018-06-18 20:02:05 and 2018-06-19 12:57:04. However this time we managed to investigate and believe that we've implimented a fix.

If you care, it seems that the web server from which we retrieve this data will, sometimes, respond '404 Not Found' to any request that doesn't include an 'Accept-Encoding' header. You'll apreciate this was tricky to identify because the URL in question worked fine when accessed from a browser...