Released Datofu, a library of common Datomic utilities https://github.com/vvvvalvalval/datofu

@val_waeselynck The idempotency of the db functions, is that implemented on top of your migration system? (conformity style basically)

@dominicm no, it's just that installing the schema for a transaction fn is idempotent

I’m getting a failed heartbeat on a datomic:dev:// database. Incidentally, it keeps happening after running a large import, though I’m not suggesting that’s related. Any ideas?

@val_waeselynck the ordering, do you know how well that performs out of interest?

@dominicm never tested it in production with more than a few dozen items, in which case it showed no performance issue

but that question is a bit difficult to answer - it depends on the data distribution and the queries you run on it

@val_waeselynck I agree, thought as much 😛

@uwo heartbeat fails when the transactor can no longer write to storage. I know this is just DEV but have you configured HA ? http://docs.datomic.com/ha.html

its kind of hacky, but you might also be able to up the heartbeat-interval-msec in your transactor properties file to give you some more breathing room before failover

but if its failing routinely that likely won't matter and you need to figure out what might be causing storage to be unreachable

@jaret thanks, that’s very useful info! I suspect our culprit was a deployed artifact with a mismatched peer version number, though I can’t be sure. But I haven’t run into the issue since ensuring that we were using the right version of the peer library. lame explanation, sorry!