feat: pre json marshal health body (#43)

* feat: health improvement

* feat: pre json marshal

backend/internal/handlers/health/health.go

@@ -6,22 +6,32 @@ import (
 
 	"github.com/GenerateNU/nightlife/internal/types"
 	"github.com/gofiber/fiber/v2"
+
+	go_json "github.com/goccy/go-json"
 )
 
-var health = &types.SysInfo{
-	OS:           runtime.GOOS,
-	Architecture: runtime.GOARCH,
-	CPUCores:     runtime.NumCPU(),
-	GoVersion:    runtime.Version(),
+var healthBody []byte
+
+func init() {
+	body := fiber.Map{
+		"status": "ok",
+		"system": &types.SysInfo{
+			OS:           runtime.GOOS,
+			Architecture: runtime.GOARCH,
+			CPUCores:     runtime.NumCPU(),
+			GoVersion:    runtime.Version(),
+		},
+	}
+
+	bodyBytes, err := go_json.Marshal(body)
+	if err != nil {
+		panic(err)
+	}
+
+	healthBody = bodyBytes
 }
 
 func (s *Service) GetHealth(c *fiber.Ctx) error {
-	return c.
-		Status(http.StatusOK).
-		JSON(
-			fiber.Map{
-				"status": "ok",
-				"system": health,
-			},
-		)
+	c.Set(fiber.HeaderContentType, fiber.MIMEApplicationJSON)
+	return c.Status(http.StatusOK).Send(healthBody)
 }