datomic 2019-10-24 | Slack Archive

ssdev15:10:32

Hey folks, I'm interested in trying datomic cloud, but want to test it out first. I'm going through the subscribe process now and seeing the estimated monthly costs at $118.00. Is there a way to test this out for free? Is this just an estimate based on receiving high traffic? I'm currently in the aws free tier period and hoping to just go through the ion tutorial without incurring any fees

Joe Lane15:10:38

@UNCFMJ7QE the datomic solo topology should not cost $118.00. It should cost ~$1 per day, or roughly $30 per month.

ssdev15:10:19

Ok. I selected solo topology and seeing this, but I'll just assume and hope it's over-estimating

kenny15:10:35

Solo should run on a t2.small. Not sure why that is staying i3.large.

Joe Lane15:10:37

I do not think you selected solo. The solo topology should use a t3.small

Joe Lane15:10:58

yeah. (they bumped from t2 to t3).

ssdev15:10:07

here's a full page screen shot -

ssdev15:10:57

Joe Lane15:10:44

@U1QJACBUM ^^ Might want to check that out

Joe Lane15:10:32

either way @UNCFMJ7QE , I think later on in the process when you actually select which cloudformation template to use, if you pick the solo cloudformation template that is what should be used.

ssdev15:10:46

oooo k. I'll continue on and cross my fingers and light some incense

jaret15:10:54

yeah, that is probably an error on the AWS page. Let me test.

jaret16:10:11

Yep, I just confirmed, it actually launches a SOLO template and uses the t3.small, but the calculator and marketplace listing seem to be wrong.

jaret16:10:22

Ironically, the Prod template shows the “solo” calculation

jaret16:10:53

jaret16:10:08

I’ve logged a request with AWS Marketplace to fix @UNCFMJ7QE, but the estimate you see on the marketplace page is flipped. You can look at production to see solo or look at a previous version of the software to see the correct estimates. Sorry about the confusion.

💯 4

ssdev15:11:12

Hey @U1QJACBUM have you heard back form aws concerning this switch? We were also looking at query group prices today and wondering if the prices quoted are correct or not. Also curious what the difference is between "Query Group 1" / "Query Group 2", "Production 1" / "Production 2"?

pvillegas1218:10:36

Can I have a Solo Topology with two t2.medium instances to allow me to deploy without taking my service down or do I have to use the Production Topology instead (this would allow me de deploy and it would be able to serve traffic in between? )

stuarthalloway21:10:53

Not at present, but we understand that use case and have been thinking about it.

cgrand20:10:12

I’m encoutering a weird behavior: it seems like :db/ident go into a cache and they are never removed from the cache:

favila20:10:12

that is correct

favila20:10:38

d/entid uses this cache

favila20:10:54

it’s so you can rename an ident without altering your code

cgrand20:10:05

d/transact too

favila20:10:28

everything flows through d/entid

cgrand20:10:33

I want to get rid of an attribute and be sure it’s not used anew

favila20:10:35

except some query clauses

favila20:10:27

put that same ident on a non-attribute; now any attribute-like use of it will fail

cgrand20:10:33

ok thanks for the workaround

favila20:10:47

you can retract afterwards

favila20:10:35

think of the ident cache as a map of key to eid which only assocs assertions and ignores retractions

Luke Schubert23:10:23

I'm curious is there a general ballpark pricing for datomic on prem enterprise/OEM?

2019-10-24

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