@
Xbluer 原文是「 While monolithic applications prefer a single logical database for persistant data, enterprises often prefer a single database across a range of applications - many of these decisions driven through vendor's commercial models around licensing. Microservices prefer letting each service manage its own database, either different instances of the same database technology, or entirely different database systems - an approach called Polyglot Persistence 」
Martin Fowler 拿传统单体应用和微服务做了个对比，阐明「 As well as decentralizing decisions about conceptual models, microservices also decentralize data storage decisions 」这个观点。根本没提什么「准则」……有些人也太过道听途说不求甚解了吧。