CockroachDB Glossary

Distributed Glossary

ACID or A.C.I.D

What is ACID? ACID stands for Atomicity, Consistency, …

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Active-Active Availability

What is Active-Active Availability? Active-active …

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Active-Passive Availability

What is Active-Passive Availability? Active-passive …

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API

What is an API? API stands for Application Programming …

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Application / Client

What is an application or client? An application or client …

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Atomicity

What is atomicity? Atomicity is a desirable characteristic …

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AZ (Availability Zone, or Zone)

What is an AZ? An AZ, availability zone, or just “zone”, …

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Bit

What is a bit? In the context of data storage, a bit is a …

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Byte

What is a byte? In the context of data storage, a byte is …

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Cloud

What is the cloud (in the context of databases)? In the …

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Cluster

Note: This term may have other meanings in other contexts. …

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CockroachDB

What is CockroachDB? At the highest level, CockroachDB is …

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Consistency

What is database consistency? Most database systems have …

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Core

Note: This term may have other meanings in other contexts. …

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Cost-Based Optimizer

Note: This term is specific to CockroachDB, a Distributed …

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CPU

What is a CPU? A CPU (Central Processing Unit) is a chip …

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Data Warehouse / Datacenter

What is a data warehouse or datacenter? A data warehouse or …

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Distribution Layer

Note: This term may have other meanings in other contexts. …

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Driver

Note: This term has other meanings in other contexts. Here, …

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Durability

Note: This term may have other meanings in other contexts. …

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Encoding

Note: This term is specific to CockroachDB, a Distributed …

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Gateway Node

Note: This term is specific to CockroachDB, a Distributed …

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Gossip Protocol

Note: This term may have other meanings in other contexts. …

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High availability

Note: This term may have other meanings in other contexts. …

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Hybrid Cloud

Note: This term may have other meanings in other contexts. …

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Hybrid Logical Clock (HLC) Timestamps

What are Hybrid Logical Clock (HLC) Timestamps? Accurate …

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Isolation

Note: This term may have other meanings in other contexts. …

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JSON

Note: Here, we are defining JSON in the context of a …

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Key Value (KV) Layer

Note: This term is specific to CockroachDB, a Distributed …

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Load Balance

Note: This term is specific to CockroachDB, a Distributed …

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Machine / Server

Note: This term may have other meanings in other contexts. …

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Mainframe

What is a mainframe? A mainframe is a gigantic machine …

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Meta Range

Note: This term is specific to CockroachDB, a Distributed …

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Monolithic Sorted Key Value Map

Note: This term is specific to CockroachDB, a Distributed …

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Multi-Active Availability

What is Multi-Active Availability? Multi-Active Availability …

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Multi-Cloud

Note: This term may have other meanings in other contexts. …

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MVCC (Multiversion Concurrency Control)

Note: This term is specific to CockroachDB, a Distributed …

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Node

Note: This term may have other meanings in other contexts. …

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OLTP (OnLine Transaction Processing)

What is OLTP (OnLine Transaction Processing)? OLTP (Online …

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On-Prem (On-Premises)

Note: This term may have other meanings in other contexts. …

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ORM (Object-Relational Mapper)

What is an ORM (Object-Relational Mapper)? An ORM is a …

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Physical Storage

What is Physical Storage? Physical Storage is the hardware …

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PostgreSQL Wire Protocol

What is the PostgreSQL Wire Protocol? PostgreSQL Wire …

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Primary Index

What is a Primary Index? An index is a column whose data is …

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Private Cloud

What is a Private Cloud? In a private cloud, a company’s …

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Public Cloud

What is a Public Cloud? Public Cloud is the term for the …

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Quorum

Note: This term is specific to CockroachDB, a Distributed …

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Raft Consensus Protocol

What is the Raft Consensus Protocol? The Raft Consensus …

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Range / Shard

What is a Range / Shard? A range in CockroachDB (called a …

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Range Replication

What is Range Replication? Range replication is the …

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Region

Note: This term may have other meanings in other contexts. …

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Replication Layer

Note: This term may have other meanings in other contexts. …

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RocksDB

What is RocksDB? RocksDB is a piece of software that was …

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RTO (Recovery Time Objective)

What is RTO (Recovery Time Objective)? RTO (Recovery Time …

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Secondary Index

What is a Secondary Index? A Secondary Index is a secondary …

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Serializable Isolation

What is Serializable Isolation? Serializable Isolation is …

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SQL API

What is a SQL API? A SQL API is an API for interacting and …

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SQL Layer

Note: This term is specific to CockroachDB, a Distributed …

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Storage Layer

Note: This term is specific to CockroachDB, a Distributed …

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Structured Data

What is Structured Data? Structured Data (also called …

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TPC-C

What is TPC-C? TPC-C, short for Transaction Processing …

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Transaction Layer

Note: This term is specific to CockroachDB, a Distributed …

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Unstructured Data

What is Unstructured Data? Unstructured Data is essentially …

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