[Feature Request] In metrics/prometheus sample, demonstrate millisecond histograms

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
48/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
java, prometheus
Domain
observability

Research direction

Start in the metrics/prometheus sample and inspect how Java/Tally metrics are configured and recorded. Determine whether the sample can opt in to millisecond histograms directly or needs an SDK helper; done means the sample demonstrates this configuration for users.

Written by the indexing model from the issue text.

Description

enhancement
Describe the solution you'd like

Core-based SDKs have histograms recorded in milliseconds, show how users can opt-in to this for Java/Tally metrics in the metrics sample (assuming it's straightforward to do, otherwise consider a helper in the SDK)

Dominant language
Java
Stars
258
Forks
189
Avg merge
6d 4h
Merged PRs (30d)
4

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