diff --git a/common/constants.go b/common/constants.go
index 1bca1418..7454f57a 100644
--- a/common/constants.go
+++ b/common/constants.go
@@ -103,14 +103,14 @@ var IsMasterNode = os.Getenv("NODE_TYPE") != "slave"
 var requestInterval, _ = strconv.Atoi(os.Getenv("POLLING_INTERVAL"))
 var RequestInterval = time.Duration(requestInterval) * time.Second
 
-var SyncFrequency = GetOrDefault("SYNC_FREQUENCY", 60) // unit is second
+var SyncFrequency = GetEnvOrDefault("SYNC_FREQUENCY", 60) // unit is second
 
 var BatchUpdateEnabled = false
-var BatchUpdateInterval = GetOrDefault("BATCH_UPDATE_INTERVAL", 5)
+var BatchUpdateInterval = GetEnvOrDefault("BATCH_UPDATE_INTERVAL", 5)
 
-var RelayTimeout = GetOrDefault("RELAY_TIMEOUT", 0) // unit is second
+var RelayTimeout = GetEnvOrDefault("RELAY_TIMEOUT", 0) // unit is second
 
-var GeminiSafetySetting = GetOrDefaultString("GEMINI_SAFETY_SETTING", "BLOCK_NONE")
+var GeminiSafetySetting = GetEnvOrDefaultString("GEMINI_SAFETY_SETTING", "BLOCK_NONE")
 
 const (
 	RequestIdKey = "X-Oneapi-Request-Id"
@@ -133,10 +133,10 @@ var (
 // All duration's unit is seconds
 // Shouldn't larger then RateLimitKeyExpirationDuration
 var (
-	GlobalApiRateLimitNum            = GetOrDefault("GLOBAL_API_RATE_LIMIT", 180)
+	GlobalApiRateLimitNum            = GetEnvOrDefault("GLOBAL_API_RATE_LIMIT", 180)
 	GlobalApiRateLimitDuration int64 = 3 * 60
 
-	GlobalWebRateLimitNum            = GetOrDefault("GLOBAL_WEB_RATE_LIMIT", 60)
+	GlobalWebRateLimitNum            = GetEnvOrDefault("GLOBAL_WEB_RATE_LIMIT", 60)
 	GlobalWebRateLimitDuration int64 = 3 * 60
 
 	UploadRateLimitNum            = 10
diff --git a/common/env.go b/common/env.go
new file mode 100644
index 00000000..856fa61e
--- /dev/null
+++ b/common/env.go
@@ -0,0 +1,26 @@
+package common
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+)
+
+func GetEnvOrDefault(env string, defaultValue int) int {
+	if env == "" || os.Getenv(env) == "" {
+		return defaultValue
+	}
+	num, err := strconv.Atoi(os.Getenv(env))
+	if err != nil {
+		SysError(fmt.Sprintf("failed to parse %s: %s, using default value: %d", env, err.Error(), defaultValue))
+		return defaultValue
+	}
+	return num
+}
+
+func GetEnvOrDefaultString(env string, defaultValue string) string {
+	if env == "" || os.Getenv(env) == "" {
+		return defaultValue
+	}
+	return os.Getenv(env)
+}
diff --git a/common/group-ratio.go b/common/group-ratio.go
index 1ec73c78..416ba037 100644
--- a/common/group-ratio.go
+++ b/common/group-ratio.go
@@ -1,6 +1,8 @@
 package common
 
-import "encoding/json"
+import (
+	"encoding/json"
+)
 
 var GroupRatio = map[string]float64{
 	"default": 1,
diff --git a/common/topup-ratio.go b/common/topup-ratio.go
index e045d9b7..8f03395d 100644
--- a/common/topup-ratio.go
+++ b/common/topup-ratio.go
@@ -1,6 +1,8 @@
 package common
 
-import "encoding/json"
+import (
+	"encoding/json"
+)
 
 var TopupGroupRatio = map[string]float64{
 	"default": 1,
diff --git a/common/utils.go b/common/utils.go
index 6c89d410..3e047c44 100644
--- a/common/utils.go
+++ b/common/utils.go
@@ -8,7 +8,6 @@ import (
 	"log"
 	"math/rand"
 	"net"
-	"os"
 	"os/exec"
 	"runtime"
 	"strconv"
@@ -191,25 +190,6 @@ func Max(a int, b int) int {
 	}
 }
 
-func GetOrDefault(env string, defaultValue int) int {
-	if env == "" || os.Getenv(env) == "" {
-		return defaultValue
-	}
-	num, err := strconv.Atoi(os.Getenv(env))
-	if err != nil {
-		SysError(fmt.Sprintf("failed to parse %s: %s, using default value: %d", env, err.Error(), defaultValue))
-		return defaultValue
-	}
-	return num
-}
-
-func GetOrDefaultString(env string, defaultValue string) string {
-	if env == "" || os.Getenv(env) == "" {
-		return defaultValue
-	}
-	return os.Getenv(env)
-}
-
 func MessageWithRequestId(message string, id string) string {
 	return fmt.Sprintf("%s (request id: %s)", message, id)
 }
diff --git a/constant/env.go b/constant/env.go
new file mode 100644
index 00000000..6355a6b6
--- /dev/null
+++ b/constant/env.go
@@ -0,0 +1,7 @@
+package constant
+
+import (
+	"one-api/common"
+)
+
+var StreamingTimeout = common.GetEnvOrDefault("STREAMING_TIMEOUT", 30)
diff --git a/constant/system-setting.go b/constant/system-setting.go
index de20fef8..b2976e49 100644
--- a/constant/system-setting.go
+++ b/constant/system-setting.go
@@ -1,13 +1,9 @@
 package constant
 
-import "one-api/common"
-
 var ServerAddress = "http://localhost:3000"
 var WorkerUrl = ""
 var WorkerValidKey = ""
 
-var StreamingTimeout = common.GetOrDefault("STREAMING_TIMEOUT", 30)
-
 func EnableWorker() bool {
 	return WorkerUrl != ""
 }
diff --git a/controller/topup.go b/controller/topup.go
index 90c3f779..87c68c32 100644
--- a/controller/topup.go
+++ b/controller/topup.go
@@ -5,11 +5,10 @@ import (
 	"github.com/Calcium-Ion/go-epay/epay"
 	"github.com/gin-gonic/gin"
 	"github.com/samber/lo"
-	"one-api/constant"
-
 	"log"
 	"net/url"
 	"one-api/common"
+	"one-api/constant"
 	"one-api/model"
 	"one-api/service"
 	"strconv"
diff --git a/dto/pricing.go b/dto/pricing.go
index b0497491..ee77c098 100644
--- a/dto/pricing.go
+++ b/dto/pricing.go
@@ -24,14 +24,3 @@ type OpenAIModels struct {
 	Root       string                  `json:"root"`
 	Parent     *string                 `json:"parent"`
 }
-
-type ModelPricing struct {
-	Available       bool     `json:"available"`
-	ModelName       string   `json:"model_name"`
-	QuotaType       int      `json:"quota_type"`
-	ModelRatio      float64  `json:"model_ratio"`
-	ModelPrice      float64  `json:"model_price"`
-	OwnerBy         string   `json:"owner_by"`
-	CompletionRatio float64  `json:"completion_ratio"`
-	EnableGroup     []string `json:"enable_group,omitempty"`
-}
diff --git a/model/main.go b/model/main.go
index 710ea059..a70f21bd 100644
--- a/model/main.go
+++ b/model/main.go
@@ -86,9 +86,9 @@ func InitDB() (err error) {
 		if err != nil {
 			return err
 		}
-		sqlDB.SetMaxIdleConns(common.GetOrDefault("SQL_MAX_IDLE_CONNS", 100))
-		sqlDB.SetMaxOpenConns(common.GetOrDefault("SQL_MAX_OPEN_CONNS", 1000))
-		sqlDB.SetConnMaxLifetime(time.Second * time.Duration(common.GetOrDefault("SQL_MAX_LIFETIME", 60)))
+		sqlDB.SetMaxIdleConns(common.GetEnvOrDefault("SQL_MAX_IDLE_CONNS", 100))
+		sqlDB.SetMaxOpenConns(common.GetEnvOrDefault("SQL_MAX_OPEN_CONNS", 1000))
+		sqlDB.SetConnMaxLifetime(time.Second * time.Duration(common.GetEnvOrDefault("SQL_MAX_LIFETIME", 60)))
 
 		if !common.IsMasterNode {
 			return nil
diff --git a/model/pricing.go b/model/pricing.go
index 90d8bc7e..7384a2fa 100644
--- a/model/pricing.go
+++ b/model/pricing.go
@@ -2,18 +2,28 @@ package model
 
 import (
 	"one-api/common"
-	"one-api/dto"
 	"sync"
 	"time"
 )
 
+type Pricing struct {
+	Available       bool     `json:"available"`
+	ModelName       string   `json:"model_name"`
+	QuotaType       int      `json:"quota_type"`
+	ModelRatio      float64  `json:"model_ratio"`
+	ModelPrice      float64  `json:"model_price"`
+	OwnerBy         string   `json:"owner_by"`
+	CompletionRatio float64  `json:"completion_ratio"`
+	EnableGroup     []string `json:"enable_group,omitempty"`
+}
+
 var (
-	pricingMap         []dto.ModelPricing
+	pricingMap         []Pricing
 	lastGetPricingTime time.Time
 	updatePricingLock  sync.Mutex
 )
 
-func GetPricing(group string) []dto.ModelPricing {
+func GetPricing(group string) []Pricing {
 	updatePricingLock.Lock()
 	defer updatePricingLock.Unlock()
 
@@ -21,7 +31,7 @@ func GetPricing(group string) []dto.ModelPricing {
 		updatePricing()
 	}
 	if group != "" {
-		userPricingMap := make([]dto.ModelPricing, 0)
+		userPricingMap := make([]Pricing, 0)
 		models := GetGroupModels(group)
 		for _, pricing := range pricingMap {
 			if !common.StringsContains(models, pricing.ModelName) {
@@ -42,9 +52,9 @@ func updatePricing() {
 		allModels[model] = i
 	}
 
-	pricingMap = make([]dto.ModelPricing, 0)
+	pricingMap = make([]Pricing, 0)
 	for model, _ := range allModels {
-		pricing := dto.ModelPricing{
+		pricing := Pricing{
 			Available: true,
 			ModelName: model,
 		}
diff --git a/service/sensitive.go b/service/sensitive.go
index a9b51983..17da69aa 100644
--- a/service/sensitive.go
+++ b/service/sensitive.go
@@ -3,7 +3,6 @@ package service
 import (
 	"errors"
 	"fmt"
-	"one-api/common"
 	"one-api/constant"
 	"one-api/dto"
 	"strings"
@@ -62,7 +61,7 @@ func SensitiveWordContains(text string) (bool, []string) {
 	}
 	checkText := strings.ToLower(text)
 	// 构建一个AC自动机
-	m := common.InitAc()
+	m := InitAc()
 	hits := m.MultiPatternSearch([]rune(checkText), false)
 	if len(hits) > 0 {
 		words := make([]string, 0)
@@ -80,7 +79,7 @@ func SensitiveWordReplace(text string, returnImmediately bool) (bool, []string,
 		return false, nil, text
 	}
 	checkText := strings.ToLower(text)
-	m := common.InitAc()
+	m := InitAc()
 	hits := m.MultiPatternSearch([]rune(checkText), returnImmediately)
 	if len(hits) > 0 {
 		words := make([]string, 0)
diff --git a/common/str.go b/service/str.go
similarity index 99%
rename from common/str.go
rename to service/str.go
index bab252c6..a2152bfe 100644
--- a/common/str.go
+++ b/service/str.go
@@ -1,4 +1,4 @@
-package common
+package service
 
 import (
 	"bytes"