public void updateOrder(BigDecimal unfilledQuantity, OrderStatus status, long updatedAt) {
this.version++;
this.unfilledQuantity = unfilledQuantity;
this.status = status;
this.updatedAt = updatedAt;
}
为了读的时候检测版本改动，为啥加两是为了能在写完之前检测到改动，具体我也没测，感觉可以把第一个version++去了
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何霖
public void updateOrder(BigDecimal unfilledQuantity, OrderStatus status, long updatedAt) {
this.version++;
this.unfilledQuantity = unfilledQuantity;
this.status = status;
this.updatedAt = updatedAt;
this.version++;
}