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Callum Styan 5a85f6647e Add initial implementation of per-query limits (#8727) ... **What this PR does / why we need it**: Sometimes we want to limit the impact of a single query by imposing limits that are stricter than the current tenant limit. E.g. the maximum query length could be seven days but based on the query or an admins decision a query should just have a maximum length of one day. This is where per-request limits come into play. They are passed via the `X-Loki-Query-Limit` header and extracted into the requests context. It is the responsibility of the operator or admin that the header is valid. **Which issue(s) this PR fixes**: Fixes #8762 **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [x] Tests updated - [x] `CHANGELOG.md` updated - [x] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` --------- Signed-off-by: Callum Styan <callumstyan@gmail.com> Co-authored-by: Karsten Jeschkies <karsten.jeschkies@grafana.com>		3 years ago
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client	Add initial implementation of per-query limits (#8727)	3 years ago
cluster	deletion: fix log deletion with line filters (#8151)	3 years ago
loki_micro_services_delete_test.go	[new] chunk backend: Integrate Alibaba Cloud oss (#8410)	3 years ago
loki_micro_services_test.go	Fix Flaky Integration Tests (#7360)	3 years ago
loki_simple_scalable_test.go	Remove flaky helm test (#8122)	3 years ago
loki_single_binary_test.go	Fix Flaky Integration Tests (#7360)	3 years ago
multi_tenant_queries_test.go	Loki: Fix multitenant querying (#7708)	3 years ago
parse_metrics.go	Update delete integration test (#6192)	4 years ago
parse_metrics_test.go	Update delete integration test (#6192)	4 years ago
per_request_limits_test.go	Add initial implementation of per-query limits (#8727)	3 years ago
shared_test.go	Use 0.28.1 build image and update go and alpine versions (#8583)	3 years ago