I'm using dre.pl which is an old perlscript that sends RSS->email. It uses tie with DB_File to keep track of those links it's already seen in order to avoid them next time. Even though the code is touching the hash when it unties the db file's modified date is unchanged. Likewise if I can add an explicit $ref->sync() the db file's modified date remains unchanged. Are there reasons why the db file's modified date would remain unchanged even when you dirty the hash?

In reply to When does sync not touch the db file? by steffi2

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