[Metrics] Disabling tag is not case sensitive

[rodolfoBee]

Environment

SaaS (https://sentry.io/)

Steps to Reproduce

1. Send metrics with a including upper case, for example "Website"
2. Send metrics with lower case, for example "website"
3. Disable one of them, in my case I disabled "website"
4. Send metrics with the active tag, in this case "Website"

For this test I used a counter metric with the JavaScript SDK v8.17.0. The value of the tag is not relevant in these tests.

Expected Result

Because the UI can differentiate between cases (Website != website) I expect the server to also treat tags names as case sensitive.

Actual Result

Metrics with the "Website" metric are no longer ingested when the "website" tag is disabled.

Product Area

DDM

Link

https://helpandprovid.sentry.io/metrics/?interval=1h&project=5722597&statsPeriod=7d&widgets=%5B%7B%22mri%22%3A%22c%3Acustom%2FwebsiteTest%40none%22%2C%22aggregation%22%3A%22sum%22%2C%22query%22%3A%22%22%2C%22groupBy%22%3A%5B%5D%2C%22powerUserMode%22%3Afalse%2C%22type%22%3A1%2C%22id%22%3A0%2C%22displayType%22%3A%22line%22%2C%22sort%22%3A%7B%22order%22%3A%22asc%22%7D%2C%22isHidden%22%3Afalse%2C%22overlays%22%3A%5B%22samples%22%5D%7D%5D

DSN

No response

Version

No response

[getsantry[bot]]

Assigning to @getsentry/support for routing ⏲️

[getsantry[bot]]

Routing to @getsentry/product-owners-ddm for triage ⏲️

[matejminar]

After careful consideration, we are ending the beta program and will retire the current Metrics solution on October 7th. Stay tuned for updates and read the FAQs for more details.