Update README to clarify adaptive configuration and add gRPC example

Author: bhatpriyanka8

README.md

@@ -71,12 +71,19 @@ err := doWork()
 limiter.Record(time.Since(start), err)
 ```
 ## Examples
-- **HTTP server example**  
-  [HTTP Example](https://github.com/bhatpriyanka8/adaptiveratelimit/tree/main/examples/http)
 
-- **gRPC server example**  
-  [gRPC Example](https://github.com/bhatpriyanka8/adaptiveratelimit/tree/main/examples/grpc)
+For Runnable examples, refer
+[HTTP Example](https://github.com/bhatpriyanka8/adaptiveratelimit/tree/main/examples/http)
 
+[gRPC Example](https://github.com/bhatpriyanka8/adaptiveratelimit/tree/main/examples/grpc)
+
+Go to any of these folders and just run main.go 
+```
+cd examples/http
+go run main.go
+```
+
+go run main.go
 ## Disclaimer
 
 This project is developed and maintained in a personal capacity and

examples/grpc/main.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"log"
+	"net"
+	"time"
+
+	"google.golang.org/grpc"
+
+	"github.com/bhatpriyanka8/adaptiveratelimit"
+	adaptgrpc "github.com/bhatpriyanka8/adaptiveratelimit/grpc"
+)
+
+func main() {
+	cfg := adaptiveratelimit.AdaptiveConfig{
+		TargetLatency: 200 * time.Millisecond,
+		MaxErrorRate:  0.05,
+		IncreaseStep:  1,
+		DecreaseStep:  2,
+		MinLimit:      1,
+		MaxLimit:      100,
+		Cooldown:      2 * time.Second,
+	}
+
+	limiter := adaptiveratelimit.NewAdaptivePerSecond(10, cfg)
+	defer limiter.Stop()
+
+	server := grpc.NewServer(
+		grpc.UnaryInterceptor(
+			adaptgrpc.UnaryServerInterceptor(limiter),
+		),
+	)
+
+	listen, err := net.Listen("tcp", ":50051")
+	if err != nil {
+		log.Fatalf("failed to listen: %v", err)
+	}
+
+	log.Println("gRPC server listening on :50051")
+	if err := server.Serve(listen); err != nil {
+		log.Fatalf("failed to serve: %v", err)
+	}
+}

grpc/interceptor.go

@@ -9,6 +9,7 @@ import (
 	"google.golang.org/grpc/status"
 )
 
+// UnaryServerInterceptor applies adaptive rate limiting to all unary RPCs
 func UnaryServerInterceptor(l *adaptiveratelimit.Limiter) grpc.UnaryServerInterceptor {
 	return func(
 		ctx context.Context,