Contact duplicate finder

Find duplicate contacts in linear time (that is, not having to compare all records to all other records)

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I’ve implemented an experimental approach using the simhash algorithm. It works OK, but still needs performance enhancements before we can put it in production.

A question for our users: how important is this to you? Its quite a lot of work, so we’ve not prioritised it yet.

Also, how do you anticipate using it? A regular monthly cleanup of records flagged? Or something else?