Yes golang. I am using promauto to auto register my metrics with the 
default registry at the time of initialization.
https://pkg.go.dev/github.com/prometheus/[email protected]/prometheus/promauto

Do you recall a way to force export it always with a default initial value 
of 0? 

On Wednesday, May 3, 2023 at 3:33:38 PM UTC-4 Brian Candler wrote:

> Yes, you should be able to create a counter which publishes its initial 
> value of zero. I'm fairly sure I've done this with the Golang client some 
> time in the past. What language and client library are you using?
>
> You'll have to initialise the counters explicitly. If the first time the 
> client library knows about the counter is when you increment it, then 
> clearly it won't be able to export it until then.
>
> On Wednesday, 3 May 2023 at 20:19:27 UTC+1 Johny wrote:
>
>> I need to sum two separate counter metrics capturing request failures  to 
>> compute ratio of error requests for an alerting signal. The code 
>> initializing and setting these counters sits in separate modules preventing 
>> reuse of one counter.
>>
>> The problem is when one of the counter is never incremented after a 
>> restart, service never exports the data point, prometheus will never get 
>> the time series and the summation will return nothing. 
>>
>> Is there a way to "force" publish a counter to 0 always on service reboot 
>> during counter initialization to avoid this problem?
>>
>>  (fail_count1 + fail_count2) / (total_count1 + total_count2)
>>
>>

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