How do I get the access.log, cache.log, and,  store.log files stored for a longer duration of time on a server, say, for about fifteen days; currently there is a server which stores the files typically for about a day plus one, that is a set of files created today are compressed by the end of today and kept till tomorrow while a new set of files are created automatically tomorrow after which the compressed set of files are deleted.
Squid Cache Server 2.7
logs;cache;squid