包阅导读总结
1. 关键词：Database、ACID properties、Schemas、Geographic distribution、Latency
2. 总结：本文探讨了为应用选择合适数据库的要点，包括 ACID 属性中的一致性，数据库模式的稳定性，以及用户的地理分布对数据库的影响。
3.
– 如何为应用选择合适的数据库
– ACID 属性中的一致性在错误、网络分区和电源故障时保证有效性
– 数据库模式稳定且字段类型一致时适合选 SQL 数据库，否则 NoSQL 数据库可能更好，但也有例外
– 用户地理分布广泛时，光速限制数据库延迟，一些数据库支持分布式读写或只读服务器，地理分布使一致性和延迟的权衡更困难
思维导图：
文章地址：https://www.infoworld.com/article/2264322/how-to-choose-the-right-database-for-your-application.html
文章来源：infoworld.com
作者：InfoWorld
发布时间：2024/7/15 8:00
语言：英文
总字数：2301字
预计阅读时间：10分钟
评分：91分
标签：数据库选择,应用程序开发,SQL vs NoSQL,数据存储,数据库性能
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Consistency is the “C” in the ACID properties required for validity in the event of errors, network partitions, and power failures. The four ACID properties are Atomicity, Consistency, Isolation, and Durability.
Are your database schemas stable?
If your database schemas are unlikely to change significantly over time, and you want most fields to have consistent types from record to record, then SQL databases would be a good choice for you. Otherwise, NoSQL databases, some of which don’t even support schemas, might be better for your application. There are exceptions, however. For example, Rockset allows for SQL queries without imposing a fixed schema or consistent types on the data it imports.
Geographic distribution of users
When your database users are all over the world, the speed of light imposes a lower limit on database latency for the remote users unless you provide additional servers in their regions. Some databases allow for distributed read-write servers; others offer distributed read-only servers, with all writes forced to go through a single master server. Geographic distribution makes the trade-off between consistency and latency even harder.
