yugabyte-db
https://github.com/yugabyte/yugabyte-db
C++
YugaByteDB is a high-performance, transactional database for building distributed cloud services. It currently supports Redis API (as a true DB), Cassandra API and SQL is coming very soon.
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- Issues
- [YSQL] Sequential scans with a filter on an actual tables are 2X faster than index/indexonly scan on an index table with a filter.
- [YSQL] Mechanism to enable and disable tracing
- [YSQL] Show current session for which tracing is enabled
- [YSQL] Performance impact of enabling auto_explain by default
- [YSQL] Orderby operation with a sequential scan with filter condition(expression pushdown) is 2x faster than a sequential scan without filter.
- [YSQL] Count aggregate on an indexed column is performed using a sequential scan on actual table instead of indexonly scan on an index table.
- [CDCSDK] Add few ctests for CDCSDK
- [YSQL] Impact of missing pushdown in increasing the count aggregate latency when part of composite key is used as filter/projection.
- Consider improvements from Speedb
- [Docs] Document Database Limits Details
- Docs
- C++ not yet supported