In my case:
1.The backend servers represent a same micro-service(may be contains 10
machines) serving the same APIs.
2.The proxy is based on pure Netty(no gRPC included). but clients and
backend servers are developed on gRPC.
I am not sure if one Netty channel can represents multiple connections to
在 2016年12月2日星期五 UTC+8上午1:11:03，Carl Mastrangelo写道：
> This depends on how homogeneous your backends are. For example, if your
> proxy going to the same logical set of backends each time, (even if they
> are distinct machines) then yes this is possible with gRPC. In gRPC, a
> channel represent a higher level concept than a single client. It
> represents multiple connections to multiple backends (a.k.a. Servers).
> In your case, it seems like you should build a map of hostname (a.k.a.
> "target") to Channel and pick the correct channel to serve requests to in
> your proxy. This works well if you are handling a small number hostnames.
> Each channel will have its own tcp connections, but there will be few
> total channels.
> You can do more advanced things too with your host name. If the backends
> that you send traffic to route requests based on the host name, but each
> backend can handle the requests of other host names, then you can reduce
> the number of connections even further. For example, if you know that
> foo.mydomain.com and bar.mydomain.com both physically point to the same
> set of servers, then they can both share the same channel. In your
> channel, you can override the "authority" field but still reuse the same
> We can provide a better answer if you could share a little more detail
> about what you want to do.
> On Thursday, December 1, 2016 at 8:59:45 AM UTC-8, killjason wrote:
>> (moved from: https://github.com/grpc/grpc-java/issues/2470)
>> Imagine there are 10k grpc-clients, they established 10k http2
>> connections(TCP-connections) with the http2 reverse proxy; then http2
>> reverse proxy create 10k http2 connections(TCP-connections) to the
>> origin(backend) server.
>> Is it possible to reduce the 10k connections between proxy and
>> origin(backend) server?
>> for example, can a connection pool be used in reverse proxy to reduce
>> connections with backend server?
>> This picture can explain better:
>> [image: image]
>> this picture is in Nginx blog, Is it possible to do the same thing to
>> reduce connections with backend serevrs using http2-reverse proxy?
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