Particularities concerning the synchronization of compressed files
.zip, .gz, .7z, .rar, etc ...
Any synchronization operation is
based on the last modification date of the files to decide whether or not to
transfer a file from the source folder to its image folder. However, in the case
of a compressed file containing a complete folder, the date of the last
modification is the date of the last compression and not that of the last
modification of one of the files contained in the folder. There is therefore a
risk of overwriting a compressed folder containing a recent file with a
compressed folder containing an older file but whose last compression date is
more recent. This problem arises identically with the synchronization of clouds
when precisely we would be tempted to want to use compression to accelerate the
online transfer and store more volume on a limited cloud.