What are the characteristics of distributed databases

What are the characteristics of distributed databases?

Definition:

Distributed database refers to the use of high-speed computer networks to connect multiple physically dispersed data storage units to form a logically unified database. The basic idea of ​​a distributed database is to disperse and store data in the original centralized database on multiple data storage nodes connected through the network to obtain greater storage capacity and higher concurrent access. In recent years, with the rapid growth of data volume, distributed database technology has also developed rapidly. Traditional relational databases have begun to develop from centralized models to distributed architectures. Distributed databases based on relational databases retain the characteristics of traditional databases. Based on the data model and basic characteristics, it moves from centralized storage to distributed storage, and from centralized computing to distributed computing.

Features:

1. High scalability: Distributed databases must have high scalability and be able to dynamically add storage nodes to achieve linear expansion of storage capacity.

2 High concurrency: Distributed databases must respond to read/write requests from large-scale users in a timely manner and be able to randomly read/write massive amounts of data.

3. High availability: Distributed databases must provide a fault-tolerant mechanism to achieve redundant backup of data and ensure high reliability of data and services.

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