架构的微小变化产生的意外影响使代码的修改变得更加困难。
This slight change in the architecture has the unintended effect of making modifications more difficult.
因为用户量也在增长，数据修改变得越来越慢。
Because the user base also grew, data changes became slower and slower.
粗粒度的操作可以提供更高的业务价值，而且使对实现的修改变得更容易了。
Coarse-grained operations provide more business value and allow for easier modifications of implementation.
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