"cartId": "cart_abc123",
It’s worth highlighting that “self-contained” doesn’t mean “isolated”. It’s desirable for a module to collaborate with other modules, but the communication should represent business processes interacting with each other (or a process with subprocesses).
，这一点在体育直播中也有详细论述
A merge function. This is a function that takes some state (probably received from another peer) and merges it with the local state.，更多细节参见同城约会
Another potential such change that stands in the room (but isn’t yet，推荐阅读旺商聊官方下载获取更多信息
CompletableFuture 的 get() / join() 可能在 ForkJoinPool 的 worker 线程中被调用。如果直接阻塞，就会吃掉池子的并行度。它的解决方案是实现 ManagedBlocker 接口，借助 ForkJoinPool 的补偿机制。