是否可以平滑地“热部署"部署?一个ASP.NET Core应用程序? [英] Is it possible to smoothly "hot deploy" an ASP.NET Core app?

问题描述

在带有.NET Framework的ASP.NET下，您可以执行新代码的热部署"而不会中断.之所以可行，是因为IIS可以为同一个应用程序处理多个应用程序域:当新代码到达时，它耗尽"了旧的应用程序域，允许它完成请求，同时新的应用程序域启动并开始服务新的请求.

Under ASP.NET with .NET Framework, you can perform a "hot deploy" of new code without disruption. This works because IIS can juggle multiple app domains for the same application: when new code arrives it "drain stops" the old app domain, allowing it to finish requests while simultaneously the new app domain starts up and starts serving new requests.

我的问题是:使用Kestrel的ASP.NET Core中有与此类似的东西吗?如果是这样，什么?

My question is: is there any parallel to this in ASP.NET Core with Kestrel? If so, what?

推荐答案

Kestrel不像IIS那样具有内置功能.考虑一下:Kestrel直接绑定到端口80.您必须启动一个新的Kestrel进程来更新代码.这些进程不能共享端口80，并且在没有反向代理的情况下，无法将端口从一个进程传递给另一个进程.

Kestrel doesn't have this built in like IIS does. Think about it: Kestrel binds directly to port 80. You have to start a new Kestrel process to update your code. Those processes can't share port 80 and there is no way to hand it off from one process to the other without a reverse proxy in front of both.

您可以在Web服务器之前使用负载平衡器.然后进行滚动更新或蓝绿色部署.

You could use a load balancer in front of your webservers. Then do a rolling update or a blue-green deployment.

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