diff --git a/Dockerfile b/Dockerfile
index cbb32b6..f3c3404 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.23-alpine AS dev
+FROM golang:1.25-alpine AS dev
 RUN go install github.com/air-verse/air@latest
 WORKDIR /app
 COPY . /app/
diff --git a/app/app.go b/app/app.go
index 05c3975..ef90f42 100644
--- a/app/app.go
+++ b/app/app.go
@@ -2,6 +2,9 @@ package app
 
 import (
 	"context"
+	"net/http"
+	"os"
+
 	"github.com/megadata-dev/go-snmp-olt-zte-c320/config"
 	"github.com/megadata-dev/go-snmp-olt-zte-c320/internal/handler"
 	"github.com/megadata-dev/go-snmp-olt-zte-c320/internal/repository"
@@ -12,18 +15,30 @@ import (
 	"github.com/megadata-dev/go-snmp-olt-zte-c320/pkg/snmp"
 	rds "github.com/redis/go-redis/v9"
 	"github.com/rs/zerolog/log"
-	"net/http"
-	"os"
 )
 
+// App represents the main application structure that holds the HTTP router
+// and manages the application lifecycle including dependencies initialization
+// and server startup.
 type App struct {
 	router http.Handler
 }
 
+// New creates and returns a new instance of the App with initialized dependencies.
+// It prepares the application for startup but does not start the server.
 func New() *App {
 	return &App{}
 }
 
+// Start initializes the application components, sets up connections to external services
+// (Redis and SNMP), and starts the HTTP server. It handles graceful shutdown on context
+// cancellation and ensures proper cleanup of resources.
+//
+// Parameters:
+//   - ctx: context.Context for cancellation and timeout propagation
+//
+// Returns:
+//   - error: returns any error that occurs during application startup or shutdown
 func (a *App) Start(ctx context.Context) error {
 
 	// Get config path from APP_ENV environment variable
diff --git a/app/routes.go b/app/routes.go
index 83193c3..da190a9 100644
--- a/app/routes.go
+++ b/app/routes.go
@@ -1,13 +1,14 @@
 package app
 
 import (
+	"net/http"
+	"os"
+
 	"github.com/go-chi/chi/v5"
 	"github.com/megadata-dev/go-snmp-olt-zte-c320/internal/handler"
 	"github.com/megadata-dev/go-snmp-olt-zte-c320/internal/middleware"
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
-	"net/http"
-	"os"
 )
 
 func loadRoutes(onuHandler *handler.OnuHandler) http.Handler {
diff --git a/cmd/api/main.go b/cmd/api/main.go
index 40d7594..86d7e8f 100644
--- a/cmd/api/main.go
+++ b/cmd/api/main.go
@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+
 	"github.com/megadata-dev/go-snmp-olt-zte-c320/app"
 	"github.com/rs/zerolog/log"
 )
diff --git a/config/config.go b/config/config.go
index af72b68..52c88b9 100644
--- a/config/config.go
+++ b/config/config.go
@@ -6,6 +6,8 @@ import (
 	"github.com/spf13/viper"
 )
 
+// Config represents the main application configuration structure
+// that contains all sub-configurations for SNMP, Redis, OLT, and individual PON boards.
 type Config struct {
 	SnmpCfg     SnmpConfig
 	RedisCfg    RedisConfig
@@ -44,12 +46,16 @@ type Config struct {
 	Board2Pon16 Board2Pon16
 }
 
+// SnmpConfig contains configuration parameters for SNMP connection
+// including target IP address, port, and community string.
 type SnmpConfig struct {
-	Ip        string `mapstructure:"ip"`
+	IP        string `mapstructure:"ip"` // Target IP address of the SNMP device
 	Port      uint16 `mapstructure:"port"`
 	Community string `mapstructure:"community"`
 }
 
+// RedisConfig contains configuration parameters for Redis connection
+// including host, port, authentication, and connection pooling settings.
 type RedisConfig struct {
 	Host               string `mapstructure:"host"`
 	Port               string `mapstructure:"port"`
@@ -61,6 +67,8 @@ type RedisConfig struct {
 	PoolTimeout        int    `mapstructure:"pool_timeout"`
 }
 
+// OltConfig contains base OID configurations for OLT device management
+// including common OIDs for ONU identification and type mapping.
 type OltConfig struct {
 	BaseOID1        string `mapstructure:"base_oid_1"`
 	BaseOID2        string `mapstructure:"base_oid_2"`
@@ -68,6 +76,8 @@ type OltConfig struct {
 	OnuTypeAllPon   string `mapstructure:"onu_type"`
 }
 
+// Board1Pon1 contains OID configurations for Board 1 Port 1 ONU management
+// including identifiers, status, power levels, and diagnostic information.
 type Board1Pon1 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -83,6 +93,7 @@ type Board1Pon1 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon2 contains OID configurations for Board 1 Port 2 ONU management.
 type Board1Pon2 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -98,6 +109,7 @@ type Board1Pon2 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon3 contains OID configurations for Board 1 Port 3 ONU management.
 type Board1Pon3 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -113,6 +125,7 @@ type Board1Pon3 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon4 contains OID configurations for Board 1 Port 4 ONU management.
 type Board1Pon4 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -128,6 +141,7 @@ type Board1Pon4 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon5 contains OID configurations for Board 1 Port 5 ONU management.
 type Board1Pon5 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -143,6 +157,7 @@ type Board1Pon5 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon6 contains OID configurations for Board 1 Port 6 ONU management.
 type Board1Pon6 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -158,6 +173,7 @@ type Board1Pon6 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon7 contains OID configurations for Board 1 Port 7 ONU management.
 type Board1Pon7 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -173,6 +189,7 @@ type Board1Pon7 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon8 contains OID configurations for Board 1 Port 8 ONU management.
 type Board1Pon8 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -188,6 +205,7 @@ type Board1Pon8 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon9 contains OID configurations for Board 1 Port 9 ONU management.
 type Board1Pon9 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -203,6 +221,7 @@ type Board1Pon9 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon10 contains OID configurations for Board 1 Port 10 ONU management.
 type Board1Pon10 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -218,6 +237,7 @@ type Board1Pon10 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon11 contains OID configurations for Board 1 Port 11 ONU management.
 type Board1Pon11 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -233,6 +253,7 @@ type Board1Pon11 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon12 contains OID configurations for Board 1 Port 12 ONU management.
 type Board1Pon12 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -248,6 +269,7 @@ type Board1Pon12 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon13 contains OID configurations for Board 1 Port 13 ONU management.
 type Board1Pon13 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -263,6 +285,7 @@ type Board1Pon13 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon14 contains OID configurations for Board 1 Port 14 ONU management.
 type Board1Pon14 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -278,6 +301,7 @@ type Board1Pon14 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon15 contains OID configurations for Board 1 Port 15 ONU management.
 type Board1Pon15 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -293,6 +317,7 @@ type Board1Pon15 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board1Pon16 contains OID configurations for Board 1 Port 16 ONU management.
 type Board1Pon16 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -307,6 +332,8 @@ type Board1Pon16 struct {
 	OnuLastOfflineReasonOID   string `mapstructure:"onu_last_offline_reason"`
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
+
+// Board2Pon1 contains OID configurations for Board 2 Port 1 ONU management.
 type Board2Pon1 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -322,6 +349,7 @@ type Board2Pon1 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon2 contains OID configurations for Board 2 Port 2 ONU management.
 type Board2Pon2 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -337,6 +365,7 @@ type Board2Pon2 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon3 contains OID configurations for Board 2 Port 3 ONU management.
 type Board2Pon3 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -352,6 +381,7 @@ type Board2Pon3 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon4 contains OID configurations for Board 2 Port 4 ONU management.
 type Board2Pon4 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -367,6 +397,7 @@ type Board2Pon4 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon5 contains OID configurations for Board 2 Port 5 ONU management.
 type Board2Pon5 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -382,6 +413,7 @@ type Board2Pon5 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon6 contains OID configurations for Board 2 Port 6 ONU management.
 type Board2Pon6 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -397,6 +429,7 @@ type Board2Pon6 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon7 contains OID configurations for Board 2 Port 7 ONU management.
 type Board2Pon7 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -412,6 +445,7 @@ type Board2Pon7 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon8 contains OID configurations for Board 2 Port 8 ONU management.
 type Board2Pon8 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -427,6 +461,7 @@ type Board2Pon8 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon9 contains OID configurations for Board 2 Port 9 ONU management.
 type Board2Pon9 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -442,6 +477,7 @@ type Board2Pon9 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon10 contains OID configurations for Board 2 Port 10 ONU management.
 type Board2Pon10 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -457,6 +493,7 @@ type Board2Pon10 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon11 contains OID configurations for Board 2 Port 11 ONU management.
 type Board2Pon11 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -472,6 +509,7 @@ type Board2Pon11 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon12 contains OID configurations for Board 2 Port 12 ONU management.
 type Board2Pon12 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -487,6 +525,7 @@ type Board2Pon12 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon13 contains OID configurations for Board 2 Port 13 ONU management.
 type Board2Pon13 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -502,6 +541,7 @@ type Board2Pon13 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon14 contains OID configurations for Board 2 Port 14 ONU management.
 type Board2Pon14 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -517,6 +557,7 @@ type Board2Pon14 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon15 contains OID configurations for Board 2 Port 15 ONU management.
 type Board2Pon15 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
@@ -532,6 +573,7 @@ type Board2Pon15 struct {
 	OnuGponOpticalDistanceOID string `mapstructure:"onu_gpon_optical_distance"`
 }
 
+// Board2Pon16 contains OID configurations for Board 2 Port 16 ONU management.
 type Board2Pon16 struct {
 	OnuIDNameOID              string `mapstructure:"onu_id_name"`
 	OnuTypeOID                string `mapstructure:"onu_type"`
diff --git a/docker-compose.yaml b/docker-compose.yaml
index 7fe0df1..6133313 100644
--- a/docker-compose.yaml
+++ b/docker-compose.yaml
@@ -1,7 +1,7 @@
 services:
   app:
-    image: sumitroajiprabowo/go-snmp-olt-zte-c320:latest
-    container_name: go-snmp-olt-zte-c320
+    image: cepatkilatteknologi/go-snmp-olt-zte-c320:latest
+    container_name: snmp-olt-zte-c320
     environment:
       - REDIS_HOST=redis
       - REDIS_PORT=6379
@@ -18,7 +18,7 @@ services:
       - "8081:8081"
 
   redis:
-    container_name: redis
+    container_name: redis-snmp-olt-zte-c320
     image: redis:7.2
     ports:
       - "6379:6379"
\ No newline at end of file
diff --git a/internal/handler/onu.go b/internal/handler/onu.go
index afe814a..2c3992a 100644
--- a/internal/handler/onu.go
+++ b/internal/handler/onu.go
@@ -12,6 +12,7 @@ import (
 	"github.com/rs/zerolog/log"
 )
 
+// OnuHandlerInterface is an interface that represent the auth's handler contract
 type OnuHandlerInterface interface {
 	GetByBoardIDAndPonID(w http.ResponseWriter, r *http.Request)
 	GetByBoardIDPonIDAndOnuID(w http.ResponseWriter, r *http.Request)
@@ -21,14 +22,18 @@ type OnuHandlerInterface interface {
 	GetByBoardIDAndPonIDWithPaginate(w http.ResponseWriter, r *http.Request)
 }
 
+// OnuHandler is a struct that represent the auth handler
 type OnuHandler struct {
 	ponUsecase usecase.OnuUseCaseInterface
 }
 
+// NewOnuHandler will create an object that represent the auth handler
 func NewOnuHandler(ponUsecase usecase.OnuUseCaseInterface) *OnuHandler {
 	return &OnuHandler{ponUsecase: ponUsecase}
 }
 
+// GetByBoardIDAndPonID is a method to get onu info by board id and pon id
+// example: http://localhost:8080/board/1/pon/1
 func (o *OnuHandler) GetByBoardIDAndPonID(w http.ResponseWriter, r *http.Request) {
 
 	boardID := chi.URLParam(r, "board_id") // 1 or 2
@@ -97,6 +102,8 @@ func (o *OnuHandler) GetByBoardIDAndPonID(w http.ResponseWriter, r *http.Request
 
 }
 
+// GetByBoardIDPonIDAndOnuID is a method to get onu info by board id, pon id, and onu id
+// example: http://localhost:8080/board/1/pon/1/onu
 func (o *OnuHandler) GetByBoardIDPonIDAndOnuID(w http.ResponseWriter, r *http.Request) {
 
 	boardID := chi.URLParam(r, "board_id") // 1 or 2
@@ -165,6 +172,8 @@ func (o *OnuHandler) GetByBoardIDPonIDAndOnuID(w http.ResponseWriter, r *http.Re
 	utils.SendJSONResponse(w, http.StatusOK, response) // 200
 }
 
+// GetEmptyOnuID is a method to get empty onu id by board id and pon id
+// example: http://localhost:8080/board/1/pon/1/empty
 func (o *OnuHandler) GetEmptyOnuID(w http.ResponseWriter, r *http.Request) {
 
 	boardID := chi.URLParam(r, "board_id") // 1 or 2
@@ -211,6 +220,8 @@ func (o *OnuHandler) GetEmptyOnuID(w http.ResponseWriter, r *http.Request) {
 	utils.SendJSONResponse(w, http.StatusOK, response) // 200
 }
 
+// GetOnuIDAndSerialNumber is a method to get onu id and serial number by board id and pon id
+// example: http://localhost:8080/board/1/pon/1/serial
 func (o *OnuHandler) GetOnuIDAndSerialNumber(w http.ResponseWriter, r *http.Request) {
 
 	boardID := chi.URLParam(r, "board_id") // 1 or 2
@@ -257,6 +268,8 @@ func (o *OnuHandler) GetOnuIDAndSerialNumber(w http.ResponseWriter, r *http.Requ
 	utils.SendJSONResponse(w, http.StatusOK, response) // 200
 }
 
+// UpdateEmptyOnuID is a method to update empty onu id by board id and pon id
+// example: http://localhost:8080/board/1/pon/1/empty
 func (o *OnuHandler) UpdateEmptyOnuID(w http.ResponseWriter, r *http.Request) {
 	boardID := chi.URLParam(r, "board_id") // 1 or 2
 	ponID := chi.URLParam(r, "pon_id")     // 1 - 8
@@ -302,6 +315,8 @@ func (o *OnuHandler) UpdateEmptyOnuID(w http.ResponseWriter, r *http.Request) {
 	utils.SendJSONResponse(w, http.StatusOK, response) // 200
 }
 
+// GetByBoardIDAndPonIDWithPaginate is a method to get onu info by board id and pon id with pagination
+// example: http://localhost:8080/board/1/pon/1/paginate?page=1&page_size=10
 func (o *OnuHandler) GetByBoardIDAndPonIDWithPaginate(w http.ResponseWriter, r *http.Request) {
 
 	boardID := chi.URLParam(r, "board_id") // 1 or 2
diff --git a/internal/middleware/cors.go b/internal/middleware/cors.go
index 193bcca..36d7db0 100644
--- a/internal/middleware/cors.go
+++ b/internal/middleware/cors.go
@@ -1,10 +1,13 @@
 package middleware
 
 import (
-	"github.com/go-chi/cors"
 	"net/http"
+
+	"github.com/go-chi/cors"
 )
 
+// CorsMiddleware is a middleware function that sets up CORS (Cross-Origin Resource Sharing)
+// for the HTTP server. It allows requests from any origin and supports common HTTP methods
 func CorsMiddleware() func(next http.Handler) http.Handler {
 	return cors.Handler(cors.Options{
 		AllowedOrigins:   []string{"https://*", "http://*"},
diff --git a/internal/middleware/logger.go b/internal/middleware/logger.go
index 75bf5ef..b3be87d 100644
--- a/internal/middleware/logger.go
+++ b/internal/middleware/logger.go
@@ -9,6 +9,10 @@ import (
 	"github.com/rs/zerolog"
 )
 
+// Logger is a middleware function that logs incoming HTTP requests and their details
+// using the provided zerolog.Logger instance. It captures information such as request
+// time, remote address, request path, protocol, method, user agent, response status,
+// bytes in/out, and elapsed time. It also handles panics and logs them as errors
 func Logger(logger zerolog.Logger) func(next http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		fn := func(w http.ResponseWriter, r *http.Request) {
@@ -25,7 +29,7 @@ func Logger(logger zerolog.Logger) func(next http.Handler) http.Handler {
 				}
 
 				logger.Info().Fields(map[string]interface{}{
-					"time":         startTime.Format(time.RFC3339), // Format waktu RFC3339
+					"time":         startTime.Format(time.RFC3339), // Format using RFC3339
 					"remote_addr":  r.RemoteAddr,
 					"path":         r.URL.Path,
 					"proto":        r.Proto,
diff --git a/internal/model/onu.go b/internal/model/onu.go
index 1a372fb..f1dcd6a 100644
--- a/internal/model/onu.go
+++ b/internal/model/onu.go
@@ -1,5 +1,6 @@
 package model
 
+// OltConfig struct is a struct that represent the OLT configuration
 type OltConfig struct {
 	BaseOID                   string
 	OnuIDNameOID              string
@@ -16,11 +17,13 @@ type OltConfig struct {
 	OnuGponOpticalDistanceOID string
 }
 
+// ONUInfo struct is a struct that represent the ONU information
 type ONUInfo struct {
 	ID   string `json:"onu_id"`
 	Name string `json:"name"`
 }
 
+// ONUInfoPerBoard struct is a struct that represent the ONU information per board
 type ONUInfoPerBoard struct {
 	Board        int    `json:"board"`
 	PON          int    `json:"pon"`
@@ -32,6 +35,7 @@ type ONUInfoPerBoard struct {
 	Status       string `json:"status"`
 }
 
+// ONUCustomerInfo struct is a struct that represent the detailed ONU information for customer
 type ONUCustomerInfo struct {
 	Board                int    `json:"board"`
 	PON                  int    `json:"pon"`
@@ -52,16 +56,19 @@ type ONUCustomerInfo struct {
 	GponOpticalDistance  string `json:"gpon_optical_distance"`
 }
 
+// OnuID struct is a struct that represent the ONU ID
 type OnuID struct {
 	Board int `json:"board"`
 	PON   int `json:"pon"`
 	ID    int `json:"onu_id"`
 }
 
+// OnuOnlyID struct is a struct that represent only the ONU ID without board and PON
 type OnuOnlyID struct {
 	ID int `json:"onu_id"`
 }
 
+// SNMPWalkTask struct is a struct that represent the SNMP walk task
 type SNMPWalkTask struct {
 	BaseOID   string
 	TargetOID string
@@ -69,6 +76,7 @@ type SNMPWalkTask struct {
 	PON       int
 }
 
+// OnuSerialNumber struct is a struct that represent the ONU serial number
 type OnuSerialNumber struct {
 	Board        int    `json:"board"`
 	PON          int    `json:"pon"`
@@ -76,6 +84,7 @@ type OnuSerialNumber struct {
 	SerialNumber string `json:"serial_number"`
 }
 
+// PaginationResult struct is a struct that represent the pagination result
 type PaginationResult struct {
 	OnuInformationList []ONUInfoPerBoard
 	Count              int
diff --git a/internal/repository/redis.go b/internal/repository/redis.go
index 6c4c7cc..3d7ac88 100644
--- a/internal/repository/redis.go
+++ b/internal/repository/redis.go
@@ -3,22 +3,23 @@ package repository
 import (
 	"context"
 	"encoding/json"
+	"time"
+
 	"github.com/megadata-dev/go-snmp-olt-zte-c320/internal/model"
 	"github.com/pkg/errors"
 	"github.com/redis/go-redis/v9"
 	"github.com/rs/zerolog/log"
-	"time"
 )
 
 // OnuRedisRepositoryInterface is an interface that represent the auth's repository contract
 type OnuRedisRepositoryInterface interface {
 	GetOnuIDCtx(ctx context.Context, key string) ([]model.OnuID, error)
-	SetOnuIDCtx(ctx context.Context, key string, seconds int, onuId []model.OnuID) error
+	SetOnuIDCtx(ctx context.Context, key string, seconds int, onuID []model.OnuID) error
 	DeleteOnuIDCtx(ctx context.Context, key string) error
 	SaveONUInfoList(ctx context.Context, key string, seconds int, onuInfoList []model.ONUInfoPerBoard) error
 	GetONUInfoList(ctx context.Context, key string) ([]model.ONUInfoPerBoard, error)
 	GetOnlyOnuIDCtx(ctx context.Context, key string) ([]model.OnuOnlyID, error)
-	SaveOnlyOnuIDCtx(ctx context.Context, key string, seconds int, onuId []model.OnuOnlyID) error
+	SaveOnlyOnuIDCtx(ctx context.Context, key string, seconds int, onuID []model.OnuOnlyID) error
 }
 
 // Auth redis repository
@@ -39,18 +40,18 @@ func (r *onuRedisRepo) GetOnuIDCtx(ctx context.Context, key string) ([]model.Onu
 		return nil, errors.Wrap(err, "onuRedisRepo.GetOnuIDCtx.redisClient.Get")
 	}
 
-	var onuId []model.OnuID
-	if err := json.Unmarshal(onuBytes, &onuId); err != nil {
+	var onuID []model.OnuID
+	if err := json.Unmarshal(onuBytes, &onuID); err != nil {
 		log.Error().Err(err).Msg("Failed to unmarshal onu id")
 		return nil, errors.Wrap(err, "onuRedisRepo.GetOnuIDCtx.json.Unmarshal")
 	}
 
-	return onuId, nil
+	return onuID, nil
 }
 
 // SetOnuIDCtx is a method to set onu id to redis
-func (r *onuRedisRepo) SetOnuIDCtx(ctx context.Context, key string, seconds int, onuId []model.OnuID) error {
-	onuBytes, err := json.Marshal(onuId)
+func (r *onuRedisRepo) SetOnuIDCtx(ctx context.Context, key string, seconds int, onuID []model.OnuID) error {
+	onuBytes, err := json.Marshal(onuID)
 	if err != nil {
 		log.Error().Err(err).Msg("Failed to marshal onu id")
 		return errors.Wrap(err, "setRedisRepo.SetNewsCtx.json.Marshal")
@@ -117,18 +118,18 @@ func (r *onuRedisRepo) GetOnlyOnuIDCtx(ctx context.Context, key string) ([]model
 		return nil, errors.Wrap(err, "onuRedisRepo.GetOnlyOnuIDCtx.redisClient.Get")
 	}
 
-	var onuId []model.OnuOnlyID
-	if err := json.Unmarshal(onuBytes, &onuId); err != nil {
+	var onuID []model.OnuOnlyID
+	if err := json.Unmarshal(onuBytes, &onuID); err != nil {
 		log.Error().Err(err).Msg("Failed to unmarshal onu id")
 		return nil, errors.Wrap(err, "onuRedisRepo.GetOnlyOnuIDCtx.json.Unmarshal")
 	}
 
-	return onuId, nil
+	return onuID, nil
 }
 
 // SaveOnlyOnuIDCtx is a method to save only onu id to redis
-func (r *onuRedisRepo) SaveOnlyOnuIDCtx(ctx context.Context, key string, seconds int, onuId []model.OnuOnlyID) error {
-	onuBytes, err := json.Marshal(onuId)
+func (r *onuRedisRepo) SaveOnlyOnuIDCtx(ctx context.Context, key string, seconds int, onuID []model.OnuOnlyID) error {
+	onuBytes, err := json.Marshal(onuID)
 	if err != nil {
 		log.Error().Err(err).Msg("Failed to marshal onu id")
 		return errors.Wrap(err, "onuRedisRepo.SaveOnlyOnuIDCtx.json.Marshal")
diff --git a/internal/repository/snmp.go b/internal/repository/snmp.go
index 770891e..e4647af 100644
--- a/internal/repository/snmp.go
+++ b/internal/repository/snmp.go
@@ -2,6 +2,7 @@ package repository
 
 import (
 	"fmt"
+	"net"
 	"time"
 
 	"github.com/gosnmp/gosnmp"
@@ -53,7 +54,12 @@ func (r *snmpRepository) Get(oids []string) (*gosnmp.SnmpPacket, error) {
 	if err != nil {
 		return nil, err
 	}
-	defer snmp.Conn.Close()
+	defer func(Conn net.Conn) {
+		err := Conn.Close()
+		if err != nil {
+			fmt.Printf("Error closing SNMP connection: %v\n", err)
+		}
+	}(snmp.Conn)
 
 	result, err := snmp.Get(oids)
 	if err != nil {
@@ -68,7 +74,12 @@ func (r *snmpRepository) Walk(oid string, walkFunc func(pdu gosnmp.SnmpPDU) erro
 	if err != nil {
 		return err
 	}
-	defer snmp.Conn.Close()
+	defer func(Conn net.Conn) {
+		err := Conn.Close()
+		if err != nil {
+			fmt.Printf("Error closing SNMP connection: %v\n", err)
+		}
+	}(snmp.Conn)
 
 	err = snmp.Walk(oid, walkFunc)
 	if err != nil {
diff --git a/internal/usecase/onu.go b/internal/usecase/onu.go
index 24de2b2..a834762 100644
--- a/internal/usecase/onu.go
+++ b/internal/usecase/onu.go
@@ -17,6 +17,7 @@ import (
 	"golang.org/x/sync/singleflight"
 )
 
+// OnuUseCaseInterface is an interface that represent the auth's usecase contract
 type OnuUseCaseInterface interface {
 	GetByBoardIDAndPonID(ctx context.Context, boardID, ponID int) ([]model.ONUInfoPerBoard, error)
 	GetByBoardIDPonIDAndOnuID(boardID, ponID, onuID int) (model.ONUCustomerInfo, error)
@@ -28,6 +29,7 @@ type OnuUseCaseInterface interface {
 	)
 }
 
+// onuUsecase represent the auth's usecase
 type onuUsecase struct {
 	snmpRepository  repository.SnmpRepositoryInterface
 	redisRepository repository.OnuRedisRepositoryInterface
@@ -35,6 +37,7 @@ type onuUsecase struct {
 	sg              singleflight.Group
 }
 
+// NewOnuUsecase will create an object that represent the auth usecase
 func NewOnuUsecase(
 	snmpRepository repository.SnmpRepositoryInterface, redisRepository repository.OnuRedisRepositoryInterface,
 	cfg *config.Config,
@@ -791,7 +794,7 @@ func (u *onuUsecase) GetByBoardIDPonIDAndOnuID(boardID, ponID, onuID int) (
 				onuInfo.Uptime = uptime
 			}
 
-			// Get Data ONU Last Down Time Duration from SNMP Walk using getLastDownDuration method
+			// Get Data ONU Last Downtime Duration from SNMP Walk using getLastDownDuration method
 			if downtime, err := u.getLastDownDuration(onuInfo.LastOffline, onuInfo.LastOnline); err == nil {
 				onuInfo.LastDownTimeDuration = downtime
 			}
@@ -1164,7 +1167,7 @@ func (u *onuUsecase) GetByBoardIDAndPonIDWithPagination(
 		return nil, 0
 	}
 
-	// Extract the result from the simpleflight result and return it
+	// Extract the result from the simple flight result and return it
 	paginationResult := result.(model.PaginationResult)
 	return paginationResult.OnuInformationList, paginationResult.Count
 
diff --git a/internal/utils/converter_test.go b/internal/utils/converter_test.go
index 4c23961..35a3170 100644
--- a/internal/utils/converter_test.go
+++ b/internal/utils/converter_test.go
@@ -1,9 +1,10 @@
 package utils
 
 import (
-	"github.com/stretchr/testify/assert"
 	"testing"
 	"time"
+
+	"github.com/stretchr/testify/assert"
 )
 
 func TestConvertStringToUint16(t *testing.T) {
diff --git a/internal/utils/error.go b/internal/utils/error.go
index 9b14286..09ffd80 100644
--- a/internal/utils/error.go
+++ b/internal/utils/error.go
@@ -5,6 +5,7 @@ import (
 	"net/http"
 )
 
+// SendJSONResponse is a helper function to send a JSON response
 func SendJSONResponse(w http.ResponseWriter, statusCode int, response interface{}) {
 	w.Header().Set("Content-Type", "application/json")
 	w.WriteHeader(statusCode)
@@ -14,6 +15,7 @@ func SendJSONResponse(w http.ResponseWriter, statusCode int, response interface{
 	}
 }
 
+// ErrorBadRequest is a helper function to send a 400 Bad Request response
 func ErrorBadRequest(w http.ResponseWriter, err error) {
 	webResponse := ErrorResponse{
 		Code:    http.StatusBadRequest,
@@ -23,6 +25,7 @@ func ErrorBadRequest(w http.ResponseWriter, err error) {
 	SendJSONResponse(w, http.StatusBadRequest, webResponse)
 }
 
+// ErrorInternalServerError is a helper function to send a 500 Internal Server Error response
 func ErrorInternalServerError(w http.ResponseWriter, err error) {
 	webResponse := ErrorResponse{
 		Code:    http.StatusInternalServerError,
@@ -32,6 +35,7 @@ func ErrorInternalServerError(w http.ResponseWriter, err error) {
 	SendJSONResponse(w, http.StatusInternalServerError, webResponse)
 }
 
+// ErrorNotFound is a helper function to send a 404 Not Found response
 func ErrorNotFound(w http.ResponseWriter, err error) {
 	webResponse := ErrorResponse{
 		Code:    http.StatusNotFound,
diff --git a/internal/utils/error_test.go b/internal/utils/error_test.go
index 027f9fc..d56936c 100644
--- a/internal/utils/error_test.go
+++ b/internal/utils/error_test.go
@@ -3,32 +3,32 @@ package utils
 import (
 	"encoding/json"
 	"errors"
-	"github.com/megadata-dev/go-snmp-olt-zte-c320/internal/model"
 	"net/http"
 	"net/http/httptest"
 	"testing"
+
+	"github.com/megadata-dev/go-snmp-olt-zte-c320/internal/model"
 )
 
 func TestSendJSONResponse(t *testing.T) {
-	// Inisialisasi ResponseWriter dan Request
+	// Initiate ResponseWriter dan Request
 	rr := httptest.NewRecorder()
 
-	// Contoh respons yang ingin Anda kirim
 	response := model.OnuID{
 		Board: 2,
 		PON:   8,
 		ID:    1,
 	}
 
-	// Panggil fungsi SendJSONResponse
+	// Call the SendJSONResponse function
 	SendJSONResponse(rr, http.StatusOK, response)
 
-	// Periksa kode status respons
+	// Check the status code
 	if status := rr.Code; status != http.StatusOK {
 		t.Errorf("Status code tidak sesuai: got %v want %v", status, http.StatusOK)
 	}
 
-	// Periksa tipe konten
+	// Check the content type
 	expectedContentType := "application/json"
 	if contentType := rr.Header().Get("Content-Type"); contentType != expectedContentType {
 		t.Errorf("Content-Type tidak sesuai: got %v want %v", contentType, expectedContentType)
diff --git a/internal/utils/extractor.go b/internal/utils/extractor.go
index eec8567..9d27974 100644
--- a/internal/utils/extractor.go
+++ b/internal/utils/extractor.go
@@ -6,6 +6,7 @@ import (
 	"strings"
 )
 
+// ExtractONUID function is used to extract ONU ID from OID string
 func ExtractONUID(oid string) string {
 	// Split the OID name and take the last component
 	parts := strings.Split(oid, ".")
@@ -19,6 +20,7 @@ func ExtractONUID(oid string) string {
 	return "" // Return an empty string if the OID is invalid or empty (default value)
 }
 
+// ExtractIDOnuID function is used to extract ONU ID from OID interface{}
 func ExtractIDOnuID(oid interface{}) int {
 	if oid == nil {
 		return 0
@@ -40,6 +42,7 @@ func ExtractIDOnuID(oid interface{}) int {
 	}
 }
 
+// ExtractName function is used to extract name from OID value
 func ExtractName(oidValue interface{}) string {
 	switch v := oidValue.(type) {
 	case string:
@@ -76,6 +79,7 @@ func ExtractSerialNumber(oidValue interface{}) string {
 	}
 }
 
+// ConvertAndMultiply function is used to convert the PDU value to string after multiplying by 0.002 and subtracting 30
 func ConvertAndMultiply(pduValue interface{}) (string, error) {
 	// Type assert pduValue to an integer type
 	intValue, ok := pduValue.(int)
@@ -95,6 +99,7 @@ func ConvertAndMultiply(pduValue interface{}) (string, error) {
 	return resultStr, nil
 }
 
+// ExtractAndGetStatus function is used to extract and get status from OID value
 func ExtractAndGetStatus(oidValue interface{}) string {
 	// Check if oidValue is not an integer
 	intValue, ok := oidValue.(int)
@@ -122,6 +127,7 @@ func ExtractAndGetStatus(oidValue interface{}) string {
 	}
 }
 
+// ExtractLastOfflineReason function is used to extract last offline reason from OID value
 func ExtractLastOfflineReason(oidValue interface{}) string {
 	// Check if oidValue is not an integer
 	intValue, ok := oidValue.(int)
@@ -161,6 +167,7 @@ func ExtractLastOfflineReason(oidValue interface{}) string {
 	}
 }
 
+// ExtractGponOpticalDistance function is used to extract GPON optical distance from OID value
 func ExtractGponOpticalDistance(oidValue interface{}) string {
 	// Check if oidValue is not an integer
 	intValue, ok := oidValue.(int)
diff --git a/internal/utils/response.go b/internal/utils/response.go
index 63cb7e6..a290983 100644
--- a/internal/utils/response.go
+++ b/internal/utils/response.go
@@ -1,11 +1,13 @@
 package utils
 
+// WebResponse defines the structure for standard web responses
 type WebResponse struct {
 	Code   int32       `json:"code"`
 	Status string      `json:"status"`
 	Data   interface{} `json:"data"`
 }
 
+// ErrorResponse defines the structure for error responses
 type ErrorResponse struct {
 	Code    int32       `json:"code"`
 	Status  string      `json:"status"`
diff --git a/pkg/graceful/graceful.go b/pkg/graceful/graceful.go
index e87fc9a..52c8da7 100644
--- a/pkg/graceful/graceful.go
+++ b/pkg/graceful/graceful.go
@@ -12,6 +12,7 @@ import (
 	"time"
 )
 
+// Shutdown gracefully shuts down the HTTP server when the context is done or an OS signal is received.
 func Shutdown(ctx context.Context, server *http.Server) error {
 	ch := make(chan error, 1)
 
diff --git a/pkg/pagination/pagination.go b/pkg/pagination/pagination.go
index 4c48338..954bcf7 100644
--- a/pkg/pagination/pagination.go
+++ b/pkg/pagination/pagination.go
@@ -5,6 +5,7 @@ import (
 	"strconv"
 )
 
+// Constants for default and maximum page sizes, and query parameter names
 var (
 	DefaultPageSize = 10
 	MaxPageSize     = 100
@@ -12,6 +13,7 @@ var (
 	PageSizeVar     = "limit"
 )
 
+// Pages struct defines the structure for paginated responses
 type Pages struct {
 	Code      int32       `json:"code"`
 	Status    string      `json:"status"`
@@ -22,6 +24,7 @@ type Pages struct {
 	Data      interface{} `json:"data"`
 }
 
+// New creates a new Pages instance with the provided parameters
 func New(page, pageSize, total int) *Pages {
 	if page <= 0 {
 		page = 0
@@ -46,12 +49,14 @@ func New(page, pageSize, total int) *Pages {
 	}
 }
 
+// GetPaginationParametersFromRequest extracts pagination parameters from the HTTP request
 func GetPaginationParametersFromRequest(r *http.Request) (pageIndex, pageSize int) {
 	pageIndex = parseInt(r.URL.Query().Get(PageVar), 1)
 	pageSize = parseInt(r.URL.Query().Get(PageSizeVar), DefaultPageSize)
 	return pageIndex, pageSize
 }
 
+// parseInt is a helper function to parse string to int with a default value
 func parseInt(value string, defaultValue int) int {
 	if value == "" {
 		return defaultValue
diff --git a/pkg/redis/redis.go b/pkg/redis/redis.go
index e836cb1..bb05b9b 100644
--- a/pkg/redis/redis.go
+++ b/pkg/redis/redis.go
@@ -1,11 +1,12 @@
 package redis
 
 import (
+	"os"
+	"time"
+
 	"github.com/megadata-dev/go-snmp-olt-zte-c320/config"
 	"github.com/megadata-dev/go-snmp-olt-zte-c320/internal/utils"
 	"github.com/redis/go-redis/v9"
-	"os"
-	"time"
 )
 
 var (
@@ -18,6 +19,7 @@ var (
 	redisPoolTimeout        int
 )
 
+// NewRedisClient creates and returns a new Redis client based on the provided configuration.
 func NewRedisClient(cfg *config.Config) *redis.Client {
 	if os.Getenv("APP_ENV") == "development" || os.Getenv("APP_ENV") == "production" {
 		redisHost = os.Getenv("REDIS_HOST")
diff --git a/pkg/snmp/snmp.go b/pkg/snmp/snmp.go
index 56f2085..6a64efc 100644
--- a/pkg/snmp/snmp.go
+++ b/pkg/snmp/snmp.go
@@ -2,12 +2,13 @@ package snmp
 
 import (
 	"fmt"
-	"github.com/gosnmp/gosnmp"
-	"github.com/megadata-dev/go-snmp-olt-zte-c320/config"
-	"github.com/megadata-dev/go-snmp-olt-zte-c320/internal/utils"
 	"log"
 	"os"
 	"time"
+
+	"github.com/gosnmp/gosnmp"
+	"github.com/megadata-dev/go-snmp-olt-zte-c320/config"
+	"github.com/megadata-dev/go-snmp-olt-zte-c320/internal/utils"
 )
 
 var (
@@ -28,7 +29,7 @@ func SetupSnmpConnection(config *config.Config) (*gosnmp.GoSNMP, error) {
 		snmpCommunity = os.Getenv("SNMP_COMMUNITY")
 		logSnmp = gosnmp.Logger{}
 	} else {
-		snmpHost = config.SnmpCfg.Ip
+		snmpHost = config.SnmpCfg.IP
 		snmpPort = config.SnmpCfg.Port
 		snmpCommunity = config.SnmpCfg.Community
 		logSnmp = gosnmp.NewLogger(log.New(os.Stdout, "", 0))
diff --git a/taskfile.yml b/taskfile.yml
index 500fd70..2f30fcd 100644
--- a/taskfile.yml
+++ b/taskfile.yml
@@ -1,7 +1,7 @@
 version: '3'
 
 vars:
-  EXE: sumitroajiprabowo/go-snmp-olt-zte-c320{{exeExt}}
+  EXE: cepatkilatteknologi/go-snmp-olt-zte-c320{{exeExt}}
 
 tasks:
   default: