Region
A region is a geographical area where a physical Tencent Cloud TCHouse-D server is located. Select a region with caution as you cannot change it after service purchase and networks are completely isolated between regions. For a lower access latency and higher read and write speeds, it is advisable to select a region closest to your users.
Availability Zone (AZ)
An availability zone (AZ) is a physical IDC with isolated resources within a region.
Cluster
A cluster of Tencent Cloud TCHouse-D typically consists of 1-3 frontends (FE) and several backends (BE).
FE
FE is an abbreviation for frontend, which manages metadata, client connections, query planning, and query scheduling.
BE
BE is an abbreviation for backend, which is responsible for data storage, computation execution, compaction, and replica management.
Broker
The Broker process is a transit service to bridge Tencent Cloud TCHouse-D with external data such as HDFS and Cloud Object Storage, providing import and export features.
Tablet
In Tencent Cloud TCHouse-D, a tablet is the logical shard of a table and the basic unit for replica management. According to the partitioning and bucketing mechanism, each table is divided into multiple tablets, which are stored on different BE nodes.