| I recommend one ClickHouse compatible OLAP database project in Rust: [TensorBase](https://github.com/tensorbase/tensorbase/) for anyone who likes working with AP-side DBs on Rust. FYI, recent information and progresses for TensorBase: 1. TensorBase(TB, for short) is not an reimplementing or clone of ClickHouse(CH, for short). TensorBase just supports the ClickHouse wire protocol in its server side. 2. TB's in-Rust CH compatible server side is faster than that in-C++ of CH. TB enables *F4* in the critical writing path: Copy-Free, Lock-Free, Async-Free, Dyn-Free (no dynamic object dispatching). The result of TB's architectural performance: the untuned write throughput of TB is ~ 2x faster than that of CH in the Rust driver bench, or ~70% faster by using CH own ```clickHouse-client``` command. Use [this parallel script](https://github.com/tensorbase/tools/blob/main/import_csv_to_...) to try it yourself! 3. Thanks to the Arrow-DataFusion, TensorBase has supported good parts of TPC-H. [Untuned TPC-H Q1 result here](https://github.com/tensorbase/benchmarks/blob/main/tpch.md). 4. In simple (no-groupby) aggregation, TensorBase is several times faster than ClickHouse. [Benchmark here](https://github.com/tensorbase/benchmarks/blob/main/quick.md). 5. For complex groupby aggregations, recently we help to boost the speed of the TB engine to the same level of ClickHouse(not released, but coming soon). 6. TB will soon supports MySQl wire protocol, distributed query, adaptive columnar storage optimization... Watch [issues here](https://github.com/tensorbase/tensorbase/issues) Finally, it is really great to build an AP database in Rust. Welcome to join! Disclaimer: I am the author of TensorBase. |