Many systems and monoliths that have been built a long time ago were also modular, but their modules were mostly based on the classical Three-tier Architecture. Such a setup has a low testability, because the Business layer required the Data Access Layer (DAL) to operate even in unit tests (or you had to do a code surgery to find seams, if there were ones).
同时还开始有了许多新的考量，例如这家公司在给谁服务？它在用谁的钱？它会如何对待我的隐私？。业内人士推荐电影作为进阶阅读
。业内人士推荐爱思助手作为进阶阅读
"People don't want to be laying in a hospital waiting for care because they can't come home without the care," she says.
Google Chat just got an upgrade that could be one of its most practical yet. 。电影是该领域的重要参考