DBAs don't necessarily need telemetry in an app to diagnose an issue with the app's behavior. They can run a trace and see some SELECT is running a thousand times a second and deduce that it's being called in a loop over the result set of an earlier query. And they'd be right to say hey, this is an app issue, open a ticket with the developer.
If you put that responsibility on the developer--meaning you expect the dev to diagnose an issue that they introduced in the first place--what kind of result do you think you're going to get?
Layering these demands takes away from the overall quality of the application in my experience. You want an app developer to learn all about Prometheus so the app can have an endpoint with all these custom metrics, okay, and you want structured logging and expect the dev to learn how to use Kibana effectively? All that's a huge cognitive burden that eats a slice of the same pie (their brains) as domain knowledge, language & runtime knowledge, etc.
Get maybe one app developer to specialize, get maybe one app developer to cross-train with ops or monitoring even. But leave most of us out of it.
When you flip that expectation of developer involvement in operations, it exposes how unreasonable that arrangement is. Hey, DBA, the app is sucking up resources. Why don't you crack open an IDE and write a patch for it? What do you mean you don't know Go, what do you mean you don't use Git? Every DBA should know how to attach a debugger to a remote process, shouldn't they?
It's just exploitative. Or at least that's been my experience, so there's my bias.
If you put that responsibility on the developer--meaning you expect the dev to diagnose an issue that they introduced in the first place--what kind of result do you think you're going to get?
Layering these demands takes away from the overall quality of the application in my experience. You want an app developer to learn all about Prometheus so the app can have an endpoint with all these custom metrics, okay, and you want structured logging and expect the dev to learn how to use Kibana effectively? All that's a huge cognitive burden that eats a slice of the same pie (their brains) as domain knowledge, language & runtime knowledge, etc.
Get maybe one app developer to specialize, get maybe one app developer to cross-train with ops or monitoring even. But leave most of us out of it.
When you flip that expectation of developer involvement in operations, it exposes how unreasonable that arrangement is. Hey, DBA, the app is sucking up resources. Why don't you crack open an IDE and write a patch for it? What do you mean you don't know Go, what do you mean you don't use Git? Every DBA should know how to attach a debugger to a remote process, shouldn't they?
It's just exploitative. Or at least that's been my experience, so there's my bias.