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Message: [QUOTE="Thomas Reat, post: 4751578"] I have a perl script that maintains its state in a hash of hashes. It runs all the time. I have another script that must access (read only) this state. I'd also like to recover it in the event of a restart. What I'm doing now is to dump it to a file (200kB) every time through the main loop (every minute or so), despite the fact that the common case is for there to be no changes. And any changes that are made are tiny, to only a couple records. Locking is handled by writing to a temporary file and renaming over the original. What is an elegant solution for this? I've considered using a real database, but it seems like overkill. MLDBM looks like it might help me, but will I be able to have a dbm file opened for writing by one process and reading by another? [/QUOTE]