Like Prometheus, but for logs.

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Ashwanth fcdd55b6c9 embedded cache: update metric namespace and remove duplicate metrics (#10693) ... **What this PR does / why we need it**: Removes the following embedded cache metrics since `loki_cache_request_duration_seconds` (which instruments requests made to all the caches) [already covers them](6a07988491/pkg/storage/chunk/cache/cache.go (L110)): - `querier_cache_added_total` - `querier_cache_gets_total` - `querier_cache_misses_total` Updates the namespace and subsystem for the following metrics - `querier_cache_added_new_total` is renamed to `loki_embeddedcache_added_new_total` - `querier_cache_evicted_total` is renamed to `loki_embeddedcache_evicted_total` - `querier_cache_entries` is renamed to `loki_embeddedcache_entries` - `querier_cache_memory_bytes` is renamed to `loki_embeddedcache_memory_bytes` Removes already deprecated metric `querier_cache_stale_gets_total` **Which issue(s) this PR fixes**: Fixes #<issue number> **Special notes for your reviewer**: **Checklist** - [x] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [x] Documentation added - [x] Tests updated - [x] `CHANGELOG.md` updated - [ ] If the change is worth mentioning in the release notes, add `add-to-release-notes` label - [x] Changes that require user attention or interaction to upgrade are documented in `docs/sources/setup/upgrade/_index.md` - [ ] For Helm chart changes bump the Helm chart version in `production/helm/loki/Chart.yaml` and update `production/helm/loki/CHANGELOG.md` and `production/helm/loki/README.md`. [Example PR](d10549e3ec)		2 years ago
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client	renamed `non indexed labels` feature to `structured metadata` (#10432)	2 years ago
cluster	per tenant gate for structured metadata feature (#10402)	2 years ago
util	index-shipper: add support for multiple stores (#7754)	2 years ago
loki_micro_services_delete_test.go	chore(storage): Simplify store interfaces and abstractions (pt 2) (#10454)	2 years ago
loki_micro_services_test.go	embedded cache: update metric namespace and remove duplicate metrics (#10693)	2 years ago
loki_rule_eval_test.go	query-scheduler: fix query distribution in SSD mode (#9471)	2 years ago
loki_simple_scalable_test.go	Integration Tests: allow loki logs to be optionally output in integration tests (#8793)	2 years ago
loki_single_binary_test.go	Integration Tests: allow loki logs to be optionally output in integration tests (#8793)	2 years ago
multi_tenant_queries_test.go	Integration Tests: allow loki logs to be optionally output in integration tests (#8793)	2 years ago
parse_metrics.go	Update delete integration test (#6192)	3 years ago
parse_metrics_test.go	Update delete integration test (#6192)	3 years ago
per_request_limits_test.go	Integration Tests: allow loki logs to be optionally output in integration tests (#8793)	2 years ago
shared_test.go	Use 0.28.1 build image and update go and alpine versions (#8583)	2 years ago