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 multiple backends?
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 > connection. > > > 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? >> >> -- You received this message because you are subscribed to the Google Groups "grpc.io" group. To unsubscribe from this group and stop receiving emails from it, send an email to grpc-io+unsubscr...@googlegroups.com. To post to this group, send email to grpc-io@googlegroups.com. Visit this group at https://groups.google.com/group/grpc-io. To view this discussion on the web visit https://groups.google.com/d/msgid/grpc-io/dd155eb2-c351-49a0-8687-dffa035c3f2b%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
