How deeply does ScyllaDB in Action cover datacenter?

Defines logical and physical grouping, replication, and rack nesting, but defers detailed datacenter behavior.

Datacenter

A datacenter is a logical or physical grouping of nodes within a database cluster.

A datacenter is a grouping of nodes within a database cluster. It may be logical or represent a physical location, depending on the deployment. section 2.1.2

A cluster can use datacenters to:

Separate node groups for redundancy. section 2.1.2
Support cluster migrations or multiregional setups. section 2.1.2
Apply replication configuration independently to each datacenter. section 2.1.2

Reading a cluster status

In nodetool status output, “Datacenter: datacenter1” identifies the datacenter containing scylla-1. The rack column provides a further grouping within it. section 2.1.2

Datacenter: datacenter1
=======================
Status=Up/Down
|/ State=Normal/Leaving/Joining/Moving
--  Address   Load   Tokens Owns Host ID                              Rack
UN  scylla-1  572 KB 256    ?    75ddfa00-9624-4137-b926-429dff20e516 rack1

Inspect a concrete nodetool status result showing a datacenter, node, status, state, and rack. section 2.1.2

How ScyllaDB in Action covers it

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Related concepts

database clusterpart of · A database cluster is a group of coordinated networked database servers that jointly provide database storage and processing.
NetworkTopologyStrategyused by · NetworkTopologyStrategy is a database replication strategy that places replicas according to datacenter and rack topology, with configurable replication factors by datacenter.
GossipingPropertyFileSnitchconfigured by · GossipingPropertyFileSnitch is a Cassandra-compatible topology provider that obtains datacenter and rack information from node properties and disseminates it through gossip.
data centercontrasts with · A data center is a physical facility housing computing, storage, networking, and supporting infrastructure for operating information systems and digital services.
data center networkpart of · A data center network is the network infrastructure that interconnects servers, storage systems, and network devices within a data center.

This explainer was generated by Manning's knowledge graph from the text of ScyllaDB in Action. The section links point to the parts of the book it draws on.