diff --git a/cmd/main.go b/cmd/main.go
index 89892ba..78050d5 100644
--- a/cmd/main.go
+++ b/cmd/main.go
@@ -33,7 +33,7 @@ func main() {
 	redisOpt := &redis.Options{
 		Addr:                  fmt.Sprintf("%s:%d", c.Redis.Host, c.Redis.Port),
 		Password:              c.Redis.Password, // no password set
-		DB:                    c.Redis.DB,       // use default DB
+		DB:                    c.Redis.DB,       // use default Database
 		MaxRetries:            5,
 		MinRetryBackoff:       3,
 		MaxRetryBackoff:       7,
@@ -49,7 +49,7 @@ func main() {
 	redisCli := redis.NewClient(redisOpt)
 	redisCli.AddHook(nrredis.NewHook(redisOpt))
 
-	db, err := models.NewDB(c.DB.Host, c.DB.User, c.DB.Password, c.DB.Name, c.DB.Port, c.DB.SslMode)
+	db, err := models.NewDB(c.Database.URL)
 	if err != nil {
 		log.Fatalf("%+v", err)
 	}
diff --git a/config.env.example b/config.env.example
index 0e35449..5e6abb5 100644
--- a/config.env.example
+++ b/config.env.example
@@ -1,20 +1,17 @@
-APP_NAME="captive-portal"
-APP_ENV="dev"
+APP_ENV=dev
+APP_GRACEFUL_TIMEOUT_SECOND=1
 APP_HOST=127.0.0.1
+APP_LOG_LEVEL=debug
+APP_NAME=captive-portal
 APP_PORT=8080
-APP_GRACEFUL_TIMEOUT_SECOND=1
-APP_LOG_LEVEL="debug"
 
-OPENWRT_ENCRYPTION_KEY="YOUR_ENCRYPTION_KEY_IN_OPENNDS"
+DATABASE_URL=postgres://postgres:example@localhost:5432/captive-portal?sslmode=disable
 
-REDIS_HOST=localhost
-REDIS_PORT=6379
-REDIS_DB=0
-REDIS_PASSWORD="password"
+NEWRELIC_LICENSE_KEY=
 
-DB_HOST=localhost
-DB_PORT=5432
-DB_USER="username"
-DB_NAME="db name"
-DB_PASSWORD="password"
-DB_SSL_MODE="require"
+OPENWRT_ENCRYPTION_KEY=
+
+REDIS_DB=0
+REDIS_HOST=127.0.0.1
+REDIS_PASSWORD=
+REDIS_PORT=6370
\ No newline at end of file
diff --git a/config.yml.example b/config.yml.example
deleted file mode 100644
index 2e11923..0000000
--- a/config.yml.example
+++ /dev/null
@@ -1,26 +0,0 @@
-app:
-  name: "captive-portal"
-  env: "dev"
-  host: 127.0.0.1
-  port: 8080
-  graceful_timeout_second: 0.1
-  log_level: "debug"
-
-newrelic:
-  license_key: "example"
-
-openwrt:
-  encryption_key: "example"
-
-redis:
-  host: 127.0.0.1
-  port: 6379
-  db: 0
-  password: ""
-
-db:
-  host: 127.0.0.1
-  port: 5432
-  user: "postgres"
-  name: "captive-portal"
-  password: "example"
diff --git a/db/templates/singleton/psql.go.tpl b/db/templates/singleton/psql.go.tpl
index be2a540..ad7faff 100644
--- a/db/templates/singleton/psql.go.tpl
+++ b/db/templates/singleton/psql.go.tpl
@@ -1,6 +1,5 @@
 import (
 	"database/sql"
-	"fmt"
 
 	"github.com/pkg/errors"
 	log "github.com/sirupsen/logrus"
@@ -13,10 +12,8 @@ const (
 	accountBulkInsertCount = 3000
 )
 
-func NewDB(host, user, pass, dbName string, port int, sslmode string) (*sql.DB, error) {
-	db, err := sql.Open("postgres", fmt.Sprintf(
-		"user=%s password=%s host=%s port=%d dbname=%s sslmode=%s", user, pass, host, port, dbName, sslmode,
-	))
+func NewDB(url string) (*sql.DB, error) {
+	db, err := sql.Open("postgres", url)
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}
diff --git a/go.mod b/go.mod
index 0163da9..a19f0a1 100644
--- a/go.mod
+++ b/go.mod
@@ -7,9 +7,9 @@ require (
 	github.com/go-redis/redismock/v9 v9.0.3
 	github.com/labstack/echo/v4 v4.11.1
 	github.com/labstack/gommon v0.4.0
-	github.com/lib/pq v1.10.6
 	github.com/newrelic/go-agent/v3 v3.26.0
 	github.com/newrelic/go-agent/v3/integrations/nrecho-v4 v1.0.4
+	github.com/newrelic/go-agent/v3/integrations/nrpq v1.1.1
 	github.com/newrelic/go-agent/v3/integrations/nrredis-v9 v1.0.0
 	github.com/pkg/errors v0.9.1
 	github.com/redis/go-redis/v9 v9.1.0
@@ -31,6 +31,7 @@ require (
 	github.com/golang-jwt/jwt v3.2.2+incompatible // indirect
 	github.com/golang/protobuf v1.5.3 // indirect
 	github.com/klauspost/compress v1.16.3 // indirect
+	github.com/lib/pq v1.10.6 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.19 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
diff --git a/go.sum b/go.sum
index 096536c..49f1b19 100644
--- a/go.sum
+++ b/go.sum
@@ -326,6 +326,7 @@ github.com/labstack/echo/v4 v4.11.1/go.mod h1:YuYRTSM3CHs2ybfrL8Px48bO6BAnYIN4l8
 github.com/labstack/gommon v0.4.0 h1:y7cvthEAEbU0yHOf4axH8ZG2NH8knB9iNSoTO8dyIk8=
 github.com/labstack/gommon v0.4.0/go.mod h1:uW6kP17uPlLJsD3ijUYn3/M5bAxtlZhMI6m3MFxTMTM=
 github.com/lib/pq v1.0.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
+github.com/lib/pq v1.1.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
 github.com/lib/pq v1.10.6 h1:jbk+ZieJ0D7EVGJYpL9QTz7/YW6UHbmdnZWYyK5cdBs=
 github.com/lib/pq v1.10.6/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o=
 github.com/magiconair/properties v1.8.6/go.mod h1:y3VJvCyxH9uVvJTWEGAELF3aiYNyPKd5NZ3oSwXrF60=
@@ -371,10 +372,13 @@ github.com/modocache/gover v0.0.0-20171022184752-b58185e213c5/go.mod h1:caMODM3P
 github.com/montanaflynn/stats v0.6.6/go.mod h1:etXPPgVO6n31NxCd9KQUMvCM+ve0ruNzt6R8Bnaayow=
 github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
 github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
+github.com/newrelic/go-agent/v3 v3.3.0/go.mod h1:H28zDNUC0U/b7kLoY4EFOhuth10Xu/9dchozUiOseQQ=
 github.com/newrelic/go-agent/v3 v3.26.0 h1:xJkqiQgLtC3ys5zoBxD91ITm7sVHZNEF+7/mqmFjnl0=
 github.com/newrelic/go-agent/v3 v3.26.0/go.mod h1:sE2WdlLF3B/xI5HUuIHTa7Aht1gpcIY65pzaUoN1pJs=
 github.com/newrelic/go-agent/v3/integrations/nrecho-v4 v1.0.4 h1:c9kq15TraxDAZr0bHDmBq5VSRZYPGwH6IyksshILxnY=
 github.com/newrelic/go-agent/v3/integrations/nrecho-v4 v1.0.4/go.mod h1:UdtAjlKMd7hzPxylHMXzCvv3Ryx6+Du1DWZez01iK+M=
+github.com/newrelic/go-agent/v3/integrations/nrpq v1.1.1 h1:HlVcLXw7ZZPjeRx3lQUAN8qfpJVDmuq4L237M1+PS8A=
+github.com/newrelic/go-agent/v3/integrations/nrpq v1.1.1/go.mod h1:UvI7Z0Dok/36E44UiTysh9HQZudDdpiChbe3+eqSB0I=
 github.com/newrelic/go-agent/v3/integrations/nrredis-v9 v1.0.0 h1:jPjdL6i69gAXeOHJH/GCmLXxrzMl0J19wE5H1U3FdGE=
 github.com/newrelic/go-agent/v3/integrations/nrredis-v9 v1.0.0/go.mod h1:oRTLRKiOcFsOJZgioSMRUQ54vUMomoQkoQW8wql4B4s=
 github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
diff --git a/pkg/config/env.go b/pkg/config/env.go
index 72d77ef..ea0f26d 100644
--- a/pkg/config/env.go
+++ b/pkg/config/env.go
@@ -46,16 +46,11 @@ type Redis struct {
 	Host     string `env:"HOST"`
 	Port     int    `env:"PORT"`
 	Password string `env:"PASSWORD"`
-	DB       int    `env:"DB"`
+	DB       int    `env:"Database"`
 }
 
-type DB struct {
-	Host     string `env:"HOST"`
-	Port     int    `env:"PORT"`
-	User     string `env:"USER"`
-	Password string `env:"PASSWORD"`
-	Name     string `env:"NAME"`
-	SslMode  string `env:"SSL_MODE"`
+type Database struct {
+	URL string `env:"URL"`
 }
 
 type App struct {
@@ -72,7 +67,7 @@ type Config struct {
 	Newrelic `envPrefix:"NEWRELIC_"`
 	Openwrt  `envPrefix:"OPENWRT_"`
 	Redis    `envPrefix:"REDIS_"`
-	DB       `envPrefix:"DB_"`
+	Database `envPrefix:"DATABASE_"`
 }
 
 // FromEnv parses env to Config
diff --git a/pkg/models/psql.go b/pkg/models/psql.go
index c6ad9d1..e0c8877 100644
--- a/pkg/models/psql.go
+++ b/pkg/models/psql.go
@@ -5,12 +5,11 @@ package models
 
 import (
 	"database/sql"
-	"fmt"
 
 	"github.com/pkg/errors"
 	log "github.com/sirupsen/logrus"
 
-	_ "github.com/lib/pq"
+	_ "github.com/newrelic/go-agent/v3/integrations/nrpq"
 )
 
 const (
@@ -18,10 +17,8 @@ const (
 	accountBulkInsertCount = 3000
 )
 
-func NewDB(host, user, pass, dbName string, port int, sslmode string) (*sql.DB, error) {
-	db, err := sql.Open("postgres", fmt.Sprintf(
-		"user=%s password=%s host=%s port=%d dbname=%s sslmode=%s", user, pass, host, port, dbName, sslmode,
-	))
+func NewDB(url string) (*sql.DB, error) {
+	db, err := sql.Open("postgres", url)
 	if err != nil {
 		return nil, errors.WithStack(err)
 	}