datomic 2018-11-30 | Slack Archive

kenny00:11:25

This is a problem for anyone who has a library that uses logback 1.1.4 or greater and introspecs a Logger instance. This forces us back to logback 1.1.3 (as per https://logback.qos.ch/news.html) which was released 03/24/2015 - over 3 years ago 😬

arnaud_bos06:11:14

Hello all, I'm following the on-prem "getting started" guide to, well, "get started" on datomic, with the end goal of migrating a side project app to ions later. https://docs.datomic.com/on-prem/getting-started/connect-to-a-database.html When starting my repl I get Could not find artifact com.datomic:client-pro:jar:0.9.5786 in central (). Here's my ~/.m2/settings.xml file:

<settings xmlns=""
  xmlns:xsi=""
  xsi:schemaLocation="
                      
  <servers>
    <server>
      <id>my.datomic.com</id>
      <username>[email protected]</username>
      <password>my-key</password>
    </server>
  </servers>
</settings>

And my deps.edn file:

{:deps
 {some-other-libs {:mvn/version "blah"}
  com.datomic/client-pro {:mvn/version "0.9.5786"}
  }
 :mvn/repos
 {"" {:url ""}
  }
 }

For some reason I can't see what I did wrong, "it" doesn't seem to try fetching the dependency from "http://my.datomic.com" but rather gets stuck after not finding it on maven central. Can anyone help?

arnaud_bos06:11:53

p.s. I gotta go to work, I'll check-in later, so I think a thread is appropriate for grouping answers, yes?

thomas08:11:48

Hi, we are going to run Datomic with Postgres as a backend and our sysadmin is wondering which of the two to back up? At the datomic level or doing a pg_dump ? what would you advise?

cjohansen09:11:34

Datomic backups

cjohansen09:11:38

a postgres backup will not guarantee a working datomic database, as postgres does not know about datomic transactions etc

asier09:11:20

we do datomic backups too.

thomas10:11:10

ok, thank you for the advice!

jdkealy19:11:22

Hey @marshall @jaret... a few months ago i was posting to the channel talking about transaction timeout issues... Finally i figured it out and just wanted to point out what the issue was. Transaction functions! I was trying to ensure that a particular entity type had a unique name/type combo, and my transaction function would do a lookup for the name/type. The function would get called sometimes a few thousand times in a minute and i guess it created a bottleneck.

2018-11-30

Channels