SigNoz is an open-source APM. It helps developers monitor their applications & troubleshoot problems, an open-source alternative to DataDog, NewRelic, etc.

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<@U038264G0KT> Will add more docs soon. Stay tuned :slightly_smiling_face:

Hey <@U038264G0KT> webhook in under test. Should come in a few days.

DB alert expr will look something like
```sum(rate(signoz_db_latency_count[1m])) by (db_system) &gt; 100```
you can remove `by (db_system)` if you want overall for the DB.

```sum(rate(signoz_db_latency_count[1m])) by (service_name) &gt; 100```
use above expr, if you want to alert when DB calls exceeds 100 for any service in a min.

You can also plot the query in dashboard and check what it means
```sum(rate(signoz_db_latency_count[1m])) by (db_system) ```
You can play around the syntax using promql <https://prometheus.io/docs/prometheus/latest/querying/basics/>

Can you please explain what you mean by
&gt; • Traces time span is more than 20 sec


image.png

Hi <@U01HWQ1RTC2> - whenever I have long running traces - i need to raise an alert. In attached screenshot - one of the span took more than 50 sec - i need to define alerts for them.

<@U038264G0KT> it is not possible to set alert for a very generic query. But if you have an idea whether this will be covered under DB calls or external calls, we can set alerts for them