Is there any charge for mysql cluster?
There is no charge for using mysql cluster. mysql cluster is a group of computers, a highly practical and highly redundant version suitable for distributed computing environments. It uses the NDB Cluster storage engine.
MySQL Cluster is a set of computers, a highly practical and highly redundant version suitable for distributed computing environments. It uses the NDB Cluster storage engine, allowing multiple MySQL servers to be run in 1 Cluster.
There is no charge for using MySQL Cluster, but the tools are charged.
Advantages:
1.MySQL Cluster automatically shards (or partitions) tables onto different nodes, allowing the database to scale horizontally on low-cost commercial hardware while maintaining Complete application transparency to applications.
2. With its distributed, shared-nothing architecture, MySQL Cluster can provide 99.999% availability, ensuring strong fault recovery capabilities and the ability to perform scheduled maintenance without downtime.
3.MySQL Cluster allows users to combine the best parts of relational database technology and NoSQL technology in a solution to reduce cost, risk and complexity.
4.MySQL Cluster provides real-time response times and throughput to meet the needs of the most demanding web, telecommunications and enterprise applications. Multi-site cluster with cross-region replication.
5. Cross-region replication allows multiple clusters to be distributed in different locations, thereby improving disaster recovery capabilities and scalability of global web services.
6. To support ongoing operations, MySQL Cluster allows online addition of nodes and updates to a running database schema, thus supporting rapidly changing and highly dynamic loads.
Disadvantages:
1. As the database capacity increases, each data data node needs to add more memory, increasing the cost of use
2. Sacrifice some SQL language features.
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