Hardware Acceleration

RDMA

Data Model

Relational

Query Interface

SQL

System Architecture

Shared-Disk

Within shared-disk, PolarDB has multiple data chunk servers which consist of chunks of data. Each chunk server has its own stand-alone non-volatile memory SSD disk. Compute nodes (database server) read and write to the disk via remote direct memory access (RDMA).

Storage Organization

Copy-on-Write / Shadow Paging

Isolation Levels

Snapshot Isolation