feat(observability): attach trace exemplars to the duration histograms (MAPCO-11496) - #24

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feat/trace-exemplars

Commits on Sep 9, 2026

fix(observability): reuse the http metric families on a second observer

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085570a
feat(observability): attach trace exemplars to the duration histograms

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7678677
test: pin the exemplar to the span the observation measured

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1a499b5
docs: describe the exemplar-to-trace workflow

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e383c95
docs(contributing): map the metrics docs to their source

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57f7b6b
test: share the exemplar readers, and derive the respelled le list

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26bae12
fix(test): stop TestTracedRequestPublishesNoNewMetrics racing a detached write

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19f1044

Commits on Sep 10, 2026

fix: correct the pushed-metrics claim, and act on a second review

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89d5334
docs(observability): stop restating the respelled-le list a fourth time

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fa1f839
test: derive the respelled le list from the encoders instead of copying the rule

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d615316
fix: make two faketracer comments true, and use the shared label constants

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98c33f8
refactor: finish the ttools extraction, and table the exemplar 2x2

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9b617be
fix: repair three dangling comment pointers, and one overclaimed commit

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664a175

Commits on Sep 14, 2026

fix: the respelling reaches quantile labels, not just le

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6fc1b29
test: cover cache writes and purges, and pin the detached-write span

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3d82c7c
fix(observability): keep Handler's registerer and gatherer on one registry

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20011b3
test(observability): scrape the metrics route through Handler, not its helper

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7ee9908
docs: correct two claims about what the exemplar tests prove

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9a1c3c6
refactor(test): move the respelling differ into ttools

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7120721
docs(observability): add the provider query families to the respelled table

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935f2b5
fix(observability): say so when the metrics route falls back to the default registry

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9eee5b1
docs(contributing): map the two docs pages this work left unrecorded

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f8a4dae
docs(observability): state the le break unconditionally, and stop restating the push path

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db59284
test(observability): check the unchanged boundaries before the fatal comparison

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66231fe
fix(docs): shigola_provider_sql_query_seconds publishes nothing

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e91e346
refactor(test): correct two caller-count comments, and take a label not a regexp

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2a5868b
fix(docs): finish cutting the dead provider family from the prose

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81f28bd