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Ashwanth 8bb615c2cc config: loki better defaults (#10793) ... **What this PR does / why we need it**: Updates some of the configuration defaults to provide a better experience for users out of the box. I tried to add notes for non-trivial changes explaining the reason. | configuration | new default | old default | notes | | ------------------------------------------------------ | ----------- | ----------- | -------- | `compactor.delete-max-interval` | 24h | 0 | splits the delete requests into intervals no longer than `delete_max_interval` | | `distributor.max-line-size` | 256KB | 0 | - | | `ingester.sync-period` | 1h | 0 | ensures that the chunk cuts for a given stream are synchronized across the ingesters in the replication set. Helps with deduplicating chunks. | | `ingester.sync-min-utilization` | 0.1 | 0 | ^ | | `frontend.max-querier-bytes-read` | 150GB | 0 | - | | `frontend.max-cache-freshness` | 10m | 1m | avoid caching results for data that is still in churn | | `frontend.max-stats-cache-freshness` | 10m | 0 | avoid caching results for data that is still in churn | | `memcached.batchsize` | 256 | 1024 | - | | `memcached.parallelism` | 10 | 100 | - | | `querier.tsdb-max-query-parallelism` | 128 | 512 | avoid over parallelising queries for smaller installations | | `querier.split-queries-by-interval` | 1h | 30m | avoid over parallelising queries for smaller installations | | `querier.compress-http-responses` | true | false | compress response if the request accepts gzip encoding | | `query-scheduler.max-outstanding-requests-per-tenant` | 32000 | 100 | current default is too small, opening a big dashboard could hit this limit | | `validation.max-label-names-per-series` | 15 | 30 | reducing this to avoid blowing up the series count and index size. Also enforces users to think about what labels are being added. | **Special notes for your reviewer**: regarding `TestQueryTSDB_WithCachedPostings`: removed the assert on get calls as this is hard to get right (splits, querySize mw making stats calls) validating additions to the cache and misses is more important here I think. **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
..
background.go	Adding background cache (en|de)queue counters (#9665)	2 years ago
background_extra_test.go	Fork cortex chunk storage into Loki. (#3842)	4 years ago
background_test.go	Querier: configurable writeback queue bytes size (#9604)	2 years ago
cache.go	cache: Enable embedded cache if no other cache is configured. (#10620)	2 years ago
cache_gen.go	Add cache usage statistics (#6317)	3 years ago
cache_gen_test.go	Fork cortex chunk storage into Loki. (#3842)	4 years ago
cache_test.go	cache: Enable embedded cache if no other cache is configured. (#10620)	2 years ago
embeddedcache.go	embedded cache: update metric namespace and remove duplicate metrics (#10693)	2 years ago
embeddedcache_test.go	embedded cache: update metric namespace and remove duplicate metrics (#10693)	2 years ago
instrumented.go	Upgrade dskit to use packages migrated from weaveworks/common (#10164)	2 years ago
memcached.go	config: loki better defaults (#10793)	2 years ago
memcached_client.go	Remove dependency on thanos-io/thanos (#8227)	2 years ago
memcached_client_selector.go	Log when memcached servers are updated (#9426)	2 years ago
memcached_client_selector_test.go	Move to fork github.com/grafana/gomemcache (#7936)	2 years ago
memcached_client_test.go	Update vendored dskit (#8155)	2 years ago
memcached_test.go	Update vendored dskit (#8155)	2 years ago
mock.go	Loki: simplify the FetchChunks method and optimize the experimental l2 cache a little more (#10160)	2 years ago
redis_cache.go	Add cache usage statistics (#6317)	3 years ago
redis_cache_test.go	Add cache usage statistics (#6317)	3 years ago
redis_client.go	Prevent redis client from incorrectly choosing cluster mode with local address (#9185)	2 years ago
redis_client_test.go	Prevent redis client from incorrectly choosing cluster mode with local address (#9185)	2 years ago
snappy.go	Add cache usage statistics (#6317)	3 years ago
stats.go	Add store & cache download statistics (#7982)	2 years ago
stop_once.go	Fork cortex chunk storage into Loki. (#3842)	4 years ago
tiered.go	Add cache usage statistics (#6317)	3 years ago
tiered_test.go	[optimization] cache prometheus : fix "loki_cache_request_duration_seconds_bucket" ‘status_code’ label always equals "200" (#4891)	3 years ago