|P is for Practical|
How's mldbm with concurrency?by tphyahoo (Vicar)
|on Mar 15, 2005 at 16:31 UTC||Need Help??|
tphyahoo has asked for the
wisdom of the Perl Monks concerning the following question:
I'm using MLDBM to store the results from a web crawler bot. These are all HOH values, not too complicated. I'm fairly certain that if I am just running one bot, all should be well -- though I'm watching out for the data structure memory size restriction mentioned in the bugs area of MLDBM, just hoping this won't be a problem.
But what happens if I run multiple crawlers, all writing their data to the same file? Assuming no data conflicts -- such as updating the same hash key with different data -- am I going to be okay?
If there is data conflict, does MLDBM give you feedback that there was a conflict, or just update with the first value then the second value, or what?
Data-structure wise, I don't think I need an RDBMS system. But concurrency wise?
If it seems MLDBM is going to give me trouble, can someone suggest an alternative that handles concurrency with hash serialization better?
UPDATE: Followup-ish post at Can I serialize an object and have it remember it's type?