Status.json-gzip-nnnnnn files in /var/cache/lighttpd/compress

Hi,

I am seeing a bunch of fiiles, some rather old, accumulating in /var/cache/lighttpd/compress. They all start with status.json-gzip- followed by a bunch of numbers and hyphens. After making a backup, I simply deleted them all. The most current one was immediately recreated and piaware and 1090skyview seem to be running fine.

I’m running piaware 3.7.1 under raspbian Jesse.

Does anyone have any insight on what these files are, and why they aren’t being cleaned up automatically?
Thanks.

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