diff --git a/database/gdb/gdb.go b/database/gdb/gdb.go
index 841ef3a58..b3e355c64 100644
--- a/database/gdb/gdb.go
+++ b/database/gdb/gdb.go
@@ -266,6 +266,9 @@ var (
 	// which is a regular field name of table.
 	regularFieldNameRegPattern = `^[\w\.\-]+$`
 
+	// internalCache is the memory cache for internal usage.
+	internalCache = gcache.New()
+
 	// allDryRun sets dry-run feature for all database connections.
 	// It is commonly used for command options for convenience.
 	allDryRun = false
@@ -441,7 +444,7 @@ func (c *Core) getSqlDb(master bool, schema ...string) (sqlDb *sql.DB, err error
 		node = &n
 	}
 	// Cache the underlying connection pool object by node.
-	v, _ := gcache.GetOrSetFuncLock(node.String(), func() (interface{}, error) {
+	v, _ := internalCache.GetOrSetFuncLock(node.String(), func() (interface{}, error) {
 		sqlDb, err = c.DB.Open(node)
 		if err != nil {
 			intlog.Printf("DB open failed: %v, %+v", err, node)
diff --git a/database/gdb/gdb_driver_mssql.go b/database/gdb/gdb_driver_mssql.go
index 488055ace..36fed24fb 100644
--- a/database/gdb/gdb_driver_mssql.go
+++ b/database/gdb/gdb_driver_mssql.go
@@ -15,7 +15,6 @@ import (
 	"database/sql"
 	"errors"
 	"fmt"
-	"github.com/gogf/gf/os/gcache"
 	"strconv"
 	"strings"
 
@@ -199,7 +198,7 @@ func (d *DriverMssql) TableFields(table string, schema ...string) (fields map[st
 	if len(schema) > 0 && schema[0] != "" {
 		checkSchema = schema[0]
 	}
-	v, _ := gcache.GetOrSetFunc(
+	v, _ := internalCache.GetOrSetFunc(
 		fmt.Sprintf(`mssql_table_fields_%s_%s`, table, checkSchema),
 		func() (interface{}, error) {
 			var (
diff --git a/database/gdb/gdb_driver_mysql.go b/database/gdb/gdb_driver_mysql.go
index 09050845f..00225bbfd 100644
--- a/database/gdb/gdb_driver_mysql.go
+++ b/database/gdb/gdb_driver_mysql.go
@@ -11,7 +11,6 @@ import (
 	"errors"
 	"fmt"
 	"github.com/gogf/gf/internal/intlog"
-	"github.com/gogf/gf/os/gcache"
 	"github.com/gogf/gf/text/gregex"
 	"github.com/gogf/gf/text/gstr"
 
@@ -103,7 +102,7 @@ func (d *DriverMysql) TableFields(table string, schema ...string) (fields map[st
 	if len(schema) > 0 && schema[0] != "" {
 		checkSchema = schema[0]
 	}
-	v, _ := gcache.GetOrSetFunc(
+	v, _ := internalCache.GetOrSetFunc(
 		fmt.Sprintf(`mysql_table_fields_%s_%s`, table, checkSchema),
 		func() (interface{}, error) {
 			var (
diff --git a/database/gdb/gdb_driver_oracle.go b/database/gdb/gdb_driver_oracle.go
index 8ed74ad0f..181d25fa8 100644
--- a/database/gdb/gdb_driver_oracle.go
+++ b/database/gdb/gdb_driver_oracle.go
@@ -16,7 +16,6 @@ import (
 	"errors"
 	"fmt"
 	"github.com/gogf/gf/internal/intlog"
-	"github.com/gogf/gf/os/gcache"
 	"github.com/gogf/gf/text/gstr"
 	"reflect"
 	"strconv"
@@ -159,7 +158,7 @@ func (d *DriverOracle) TableFields(table string, schema ...string) (fields map[s
 	if len(schema) > 0 && schema[0] != "" {
 		checkSchema = schema[0]
 	}
-	v, _ := gcache.GetOrSetFunc(
+	v, _ := internalCache.GetOrSetFunc(
 		fmt.Sprintf(`oracle_table_fields_%s_%s`, table, checkSchema),
 		func() (interface{}, error) {
 			result := (Result)(nil)
@@ -196,7 +195,7 @@ FROM USER_TAB_COLUMNS WHERE TABLE_NAME = '%s' ORDER BY COLUMN_ID`,
 
 func (d *DriverOracle) getTableUniqueIndex(table string) (fields map[string]map[string]string, err error) {
 	table = strings.ToUpper(table)
-	v, _ := gcache.GetOrSetFunc(
+	v, _ := internalCache.GetOrSetFunc(
 		"table_unique_index_"+table,
 		func() (interface{}, error) {
 			res := (Result)(nil)
diff --git a/database/gdb/gdb_driver_pgsql.go b/database/gdb/gdb_driver_pgsql.go
index 81e8b40f7..67989f393 100644
--- a/database/gdb/gdb_driver_pgsql.go
+++ b/database/gdb/gdb_driver_pgsql.go
@@ -16,7 +16,6 @@ import (
 	"errors"
 	"fmt"
 	"github.com/gogf/gf/internal/intlog"
-	"github.com/gogf/gf/os/gcache"
 	"github.com/gogf/gf/text/gstr"
 	"strings"
 
@@ -108,7 +107,7 @@ func (d *DriverPgsql) TableFields(table string, schema ...string) (fields map[st
 	if len(schema) > 0 && schema[0] != "" {
 		checkSchema = schema[0]
 	}
-	v, _ := gcache.GetOrSetFunc(
+	v, _ := internalCache.GetOrSetFunc(
 		fmt.Sprintf(`pgsql_table_fields_%s_%s`, table, checkSchema),
 		func() (interface{}, error) {
 			var (
diff --git a/database/gdb/gdb_driver_sqlite.go b/database/gdb/gdb_driver_sqlite.go
index 17b55fb2f..378aaeac9 100644
--- a/database/gdb/gdb_driver_sqlite.go
+++ b/database/gdb/gdb_driver_sqlite.go
@@ -15,7 +15,6 @@ import (
 	"errors"
 	"fmt"
 	"github.com/gogf/gf/internal/intlog"
-	"github.com/gogf/gf/os/gcache"
 	"github.com/gogf/gf/os/gfile"
 	"github.com/gogf/gf/text/gstr"
 	"strings"
@@ -99,7 +98,7 @@ func (d *DriverSqlite) TableFields(table string, schema ...string) (fields map[s
 	if len(schema) > 0 && schema[0] != "" {
 		checkSchema = schema[0]
 	}
-	v, _ := gcache.GetOrSetFunc(
+	v, _ := internalCache.GetOrSetFunc(
 		fmt.Sprintf(`sqlite_table_fields_%s_%s`, table, checkSchema),
 		func() (interface{}, error) {
 			var (
diff --git a/os/gfile/gfile_cache.go b/os/gfile/gfile_cache.go
index 1dba5a994..d09cf99c3 100644
--- a/os/gfile/gfile_cache.go
+++ b/os/gfile/gfile_cache.go
@@ -21,6 +21,9 @@ const (
 var (
 	// Default expire time for file content caching.
 	cacheExpire = cmdenv.Get("gf.gfile.cache", gDEFAULT_CACHE_EXPIRE).Duration()
+
+	// internalCache is the memory cache for internal usage.
+	internalCache = gcache.New()
 )
 
 // GetContents returns string content of given file by <path> from cache.
@@ -39,13 +42,13 @@ func GetBytesWithCache(path string, duration ...time.Duration) []byte {
 	if len(duration) > 0 {
 		expire = duration[0]
 	}
-	r, _ := gcache.GetOrSetFuncLock(key, func() (interface{}, error) {
+	r, _ := internalCache.GetOrSetFuncLock(key, func() (interface{}, error) {
 		b := GetBytes(path)
 		if b != nil {
 			// Adding this <path> to gfsnotify,
 			// it will clear its cache if there's any changes of the file.
 			_, _ = gfsnotify.Add(path, func(event *gfsnotify.Event) {
-				gcache.Remove(key)
+				internalCache.Remove(key)
 				gfsnotify.Exit()
 			})
 		}