replace encoding/json with goccy/go-json (#2421 expanded)

_examples/benchmarking/.gqlgen.yml

@@ -0,0 +1,4 @@
+exec:
+  filename: generated/exec.go
+model:
+  filename: models/generated.go

_examples/benchmarking/benchmarks_test.go

@@ -0,0 +1,49 @@
+package benchmarking
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/99designs/gqlgen/_examples/benchmarking/models"
+	gqlclient "github.com/99designs/gqlgen/client"
+
+	"github.com/99designs/gqlgen/_examples/benchmarking/generated"
+	"github.com/99designs/gqlgen/graphql/handler"
+)
+
+func BenchmarkQueriesOfVariableSizes(bmark *testing.B) {
+	for _, testCase := range []struct {
+		inputSize  int
+		outputSize int
+	}{
+		{inputSize: 100000, outputSize: 100000},
+		{inputSize: 1000000, outputSize: 1000000},
+		{inputSize: 10000000, outputSize: 1000000},
+		{inputSize: 10000000, outputSize: 10000000},
+		{inputSize: 100000000, outputSize: 100000000},
+	} {
+		bmark.Run(fmt.Sprintf("input size: %d output size %d", testCase.inputSize, testCase.outputSize), func(b *testing.B) {
+			input := generateStringOfSize(testCase.inputSize)
+
+			result := &struct {
+				Out models.OutputType `json:"testQueryPerformance"`
+			}{}
+			gql := gqlclient.New(handler.NewDefaultServer(generated.NewExecutableSchema(generated.Config{Resolvers: NewResolver(testCase.outputSize, input)})))
+			q := `query ($arg: InputArgument!) {
+			testQueryPerformance(in: $arg) {
+				value
+			}
+		}`
+
+			b.ReportAllocs()
+			b.ResetTimer()
+
+			for j := 0; j < b.N; j++ {
+				gql.MustPost(q, result, gqlclient.Var("arg", models.InputArgument{Value: input}))
+				if len(result.Out.Value) != testCase.outputSize {
+					b.Fatalf("Unexpected output size: %d", len(result.Out.Value))
+				}
+			}
+		})
+	}
+}