Kuidas toimub sisendpäringute jaotus teenuste vahel, kasutades gRPC?

In gRPC, the distribution of incoming requests among services is usually implemented at the client level or using external load balancers. gRPC itself does not provide an internal load balancing mechanism, but supports several strategies:

• Client-side load balancing: the client obtains a list of available servers (e.g., via service discovery) and distributes requests among them according to an algorithm (round-robin, random choice, etc.).
• External load balancer: external load balancers (e.g., Envoy, Nginx, or cloud LB) can be used to receive requests and distribute them among service instances.

Example of client-side load balancing using resolver and balancer in Go:

conn, err := grpc.Dial("dns:///myservice.example.com", grpc.WithDefaultServiceConfig(`{"loadBalancingPolicy":"round_robin"}`))

Here, the client uses DNS to obtain the list of servers and applies the round_robin strategy to distribute requests.