The ContactService has only an in-memory list (not persisting to disk) of contacts.

ContactService只有内存中的联系人列表(没有存储到磁盘)。

youdao

Event stores are conceptually simpler than full RDBMS solutions, and it's easy to scale up from an in-memory list of events to a full-featured event store.

事件存储器从概念上讲比全功能的关系型数据库解决方案要更简单，而且他可以很容易地从内存中的事件集合扩展到全功能的事件存储器。

youdao

Event stores are conceptually simpler than full RDBMS solutions, and it's easy to scale up from an in-memory list of events to a full-featured event store.

事件存储器从概念上讲比全功能的关系型数据库解决方案要更简单，而且他可以很容易地从内存中的事件集合扩展到全功能的事件存储器。

youdao