Akka通过负载均衡器询问 [英] Akka ask through a load balancer
问题描述
我有以下设置:
[app-a Containers] <-[load balancer]-> [app-b Containers]
这些容器是Docker容器，并且为一组容器分配了DNS名称，例如app-a.marathon.mesos和app-b.marathon.mesos.
The containers are Docker containers and a set of containers are assigned a DNS name like app-a.marathon.mesos and app-b.marathon.mesos.
现在，当app-a中的演员向app-b上的远程演员提问时，app-b的发件人将成为app-a.marathon.mesos.
Now when an actor in app-a makes an ask to a remote actor on app-b, the app-b's sender becomes app-a.marathon.mesos.
这是一个很大的问题，因为现在，对提问者的答复可能会或可能不会到达–它可能会到达任何app-a容器.
This is tremendously problemmatic because now, the reply to the asking actor may or may not arrive – it may arrive at any of the app-a containers.
克服此问题的最佳方法是什么?
What is the best way to overcome this?
推荐答案
您的设置似乎实际上无法实现您的目标，因为违反了基本约束，即actor路径是唯一的这一事实. 我认为有2种选择:
Your setup seems to make it actually impossible to implement your goal because a basic constraint, the fact that the actor path is unique is violated. I think there are 2 options:
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更新您的负载均衡器以支持某种特定的寻址方式
Update your load balancer to support some kind of specific addressing
在收到答案后将要在app-a上执行的后续操作编码为消息本身，从而允许app-b实际执行它们(或app-a中的随机接收者). /p>
Encode the follow-up operations you want to execute on app-a upon receiving the answer into the message itself, allowing the app-b to actually execute them (or the random receiver in app-a).
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