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Christian Haudum 4bffed22e4 Reuse string/InstanceDesc buffers in index gateway clients (#9341) ... **What this PR does / why we need it**: When running the IndexGateway in ring mode, `ring.MakeBuffersForGet()` in the index gateway client allocated fixed size `[]string`/`[]InstanceDesc` slices with a capacity of 5 for each and every request. By using a `sync.Pool` the client can reduce the amount of allocations. Additionally, since we run the index gateway ring with a high replication factor to be able to scale them better horizontally, an initial capacity of 5 is most of the time too low, leading to extra allocations when growing the capacity of the slice. **Checklist** - [ ] Reviewed the [`CONTRIBUTING.md`](https://github.com/grafana/loki/blob/main/CONTRIBUTING.md) guide (**required**) - [ ] Documentation added - [ ] Tests updated - [ ] `CHANGELOG.md` updated - [ ] Changes that require user attention or interaction to upgrade are documented in `docs/sources/upgrading/_index.md` --------- Signed-off-by: Christian Haudum <christian.haudum@gmail.com>		2 years ago
..
bucket	S3: add support for s3 session token (#8474)	2 years ago
chunk	Adding more buckets to loki_memcache_request_duration_seconds histogram (#9431)	2 years ago
common/aws	S3 Storage Class Configuration (#8532)	2 years ago
config	compactor: multi-store support (#7447)	2 years ago
errors	Refactoring of the Loki storage (#5833)	3 years ago
hack	Update Prometheus dependency (#9205)	2 years ago
stores	Reuse string/InstanceDesc buffers in index gateway clients (#9341)	2 years ago
async_store.go	fixes bug with queryIngesterWithin logic in asyncStore ingester stats… (#8145)	2 years ago
async_store_test.go	fixes bug with queryIngesterWithin logic in asyncStore ingester stats… (#8145)	2 years ago
batch.go	Update Prometheus dependency (#9205)	2 years ago
batch_test.go	Revert "Hide duplicates caused by stream sharding (#7005)" (#7031)	3 years ago
factory.go	index-shipper: add support for multiple stores (#7754)	2 years ago
factory_test.go	index-shipper: add support for multiple stores (#7754)	2 years ago
lazy_chunk.go	Refactoring of the Loki storage (#5833)	3 years ago
lazy_chunk_test.go	Revert "Hide duplicates caused by stream sharding (#7005)" (#7031)	3 years ago
store.go	Rename usagestats to analytics (#9212)	2 years ago
store_test.go	index-shipper: add support for multiple stores (#7754)	2 years ago
util_test.go	Update Prometheus dependency (#9205)	2 years ago