greptimedb
https://github.com/greptimeteam/greptimedb
Rust
An open-source, cloud-native, unified time series database for metrics, logs and events with SQL/PromQL supported. Available on GreptimeCloud.
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- Issues
- 1.2.1: error[E0557]: feature has been removed: box_patterns
- perf(promql): index valid sample positions for nullable range functions
- feat: allow customized time index unit for metric engine table
- feat(query): plan a PromQL __name__ union across metric tables
- fix(query): keep count_values generated label in enclosing expressions
- feat(query): implement PromQL @ modifier on vector and matrix selectors
- fix(servers): reject multi-metric __name__ regex PromQL queries
- Metric engine: ingestion paths reject a physical table pre-created with a TIMESTAMP(6) (µs) time index — "Metric has different time unit (Millisecond) than the physical region (Microsecond)"
- feat(datanode): execute nested MergeScan plans on the datanode
- PromQL irate returns infinity for distinct timestamps within one millisecond
- Docs
- Rust not yet supported