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2020-01-17
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We are seeing a message like Cache put-result-handler error: net.spy.memcached.internal.CheckedOperationTimeoutException: Operation timed out. - failing node: /10.213.1.121:11211
in the AWS CloudWatch logs for Datomic Cloud. Is it something to be concerned about?
Hi, I’m trying to query on a list of id’s like so:
(d/q '[:find ?title
:in $ ?eids <- A list of the form (#{:db/id <ID>} ...)
:where
[?title :message/text ?eids]]
db msg-eids)
How do I go about doing this?
Thanks in advance!Okay, my list will look like this:
(<ID> ...)
Do I need to change anything in the in
clause?Thanks!
Hi all, wondering why the datomic api sometimes returns sets (entity) and sometimes returns vectors (pull) for cardinality many values? AFAIK, there is no intrinsic order to cardinality many values, and i'm wondering why vectors are returned.
[{:card-many-attr [:not-unique-attr]}
for eg. You are going to get duplicate {:not-unique-attr someval}
entries
D/entity however can guarantee that because each entry is a unique entity object (entity equality is by db-id+ connection)
@U09R86PA4, great explanation, thanks for your response!