Purge cache by path — partial cache clearing. Put the part of the URL after the domain /path_to_file/file.jpg
TTL — the lifetime of files in the cache (maximum 365 days; 2 days – by default).
Min requests to cache — the number of minimum requests for a file to get into the cache.
Cache gzipped content separately — based on the Accept-Encoding: gzip header. For a separate cache for compressed and uncompressed content.
Truncate URL params — a truncation of URL parameters of a GET request for caching URLs without GET parameters. You need to enter the file extensions for which these parameters are truncated.