diff --git a/client/src/app/core/services/recipe.service.ts b/client/src/app/core/services/recipe.service.ts
index aaa3ea5..208f0fb 100644
--- a/client/src/app/core/services/recipe.service.ts
+++ b/client/src/app/core/services/recipe.service.ts
@@ -326,11 +326,13 @@ export class RecipeService {
     country: string,
     filename: string,
     sortKey: string,
+    ascending: boolean
     ): Promise<Observable<any>> {
       return this._httpClient.post<any>(
         environment.api + '/recipes/sort/' + country + '/' + filename ,
         JSON.stringify({
-          "sortKey": sortKey
+          "sortKey": sortKey,
+          "ascending": ascending
         }),
         { withCredentials: true, responseType: 'json' }
       );
diff --git a/client/src/app/features/recipes/recipes.component.ts b/client/src/app/features/recipes/recipes.component.ts
index c37bd59..8a4a74a 100644
--- a/client/src/app/features/recipes/recipes.component.ts
+++ b/client/src/app/features/recipes/recipes.component.ts
@@ -638,19 +638,38 @@ export class RecipesComponent implements OnInit, OnDestroy, AfterViewInit {
 
     // activate sorting
     console.log('sortByHeader', header);
+    // save toggle for each header
+
+    // get header if saved
+    let headerToggle = await AsyncStorage.getItem("sort_"+header);
+    let toggleAscend = true;
+    if(headerToggle == null || headerToggle == undefined){
+      await AsyncStorage.setItem("sort_"+header, "true");
+    } else if(headerToggle == "true") {
+      toggleAscend = false;
+      await AsyncStorage.setItem("sort_"+header, "false");
+    } else if(headerToggle == "false"){
+      toggleAscend = true;
+      await AsyncStorage.setItem("sort_"+header, "true");
+    }
+
     //
+    console.log("sort ", headerToggle, " to ", header);
 
     // send to server [/recipe/sort]
     (
       await this._recipeService.sortRecipe(
         await this._recipeService.getCurrentCountry(),
         this._recipeService.getCurrentFile(),
-        header
+        header,
+        toggleAscend
       )
     ).subscribe({
 
       next: (data: any) => {
         if(data.status == 'OK'){
+          console.log(data.result);
+          alert("refresh ... ");
           window.location.reload();
         }
       }
diff --git a/server/data/data.go b/server/data/data.go
index cba4399..eef8028 100644
--- a/server/data/data.go
+++ b/server/data/data.go
@@ -10,6 +10,7 @@ import (
 	"recipe-manager/models"
 	"recipe-manager/services/logger"
 	"slices"
+	"sort"
 	"strconv"
 	"strings"
 	"time"
@@ -17,6 +18,8 @@ import (
 	"reflect"
 
 	"go.uber.org/zap"
+	"golang.org/x/text/collate"
+	"golang.org/x/text/language"
 )
 
 type RecipeWithTimeStamps struct {
@@ -42,6 +45,133 @@ type DefaultByCountry struct {
 	DefaultFileVersion int
 }
 
+// sorting
+type recipe01Sorter struct {
+	recipe01s []models.Recipe01
+	byKey     func(r1, r2 *models.Recipe01) bool
+}
+
+// Len implements sort.Interface.
+func (r *recipe01Sorter) Len() int {
+	return len(r.recipe01s)
+}
+
+// Less implements sort.Interface.
+func (r *recipe01Sorter) Less(i int, j int) bool {
+	return r.byKey(&r.recipe01s[i], &r.recipe01s[j])
+}
+
+// Swap implements sort.Interface.
+func (r *recipe01Sorter) Swap(i int, j int) {
+	r.recipe01s[i], r.recipe01s[j] = r.recipe01s[j], r.recipe01s[i]
+}
+
+type ByRecipe01Field func(r1, r2 *models.Recipe01) bool
+
+func (by ByRecipe01Field) Sort(recipe01s []models.Recipe01) {
+	sorter_inst := &recipe01Sorter{
+		recipe01s: recipe01s,
+		byKey:     by,
+	}
+
+	sort.Sort(sorter_inst)
+	// set back to cache
+
+}
+
+func SortRecipe01ByFieldName(field string, ascending bool) func(r1, r2 *models.Recipe01) bool {
+	return func(r1, r2 *models.Recipe01) bool {
+		// get value by reflect
+		v1 := reflect.Indirect(reflect.ValueOf(r1)).FieldByName(field)
+		v2 := reflect.Indirect(reflect.ValueOf(r2)).FieldByName(field)
+
+		asAscending := false
+
+		// ensure type is string
+		if v1.Kind() == reflect.String {
+			// check field name
+			if field == "LastChange" {
+				// special case, do date parser
+				// parse date
+				layout := "02-Jan-2006 15:04:05"
+
+				// noLeftLastChange := false
+				// noRightLastChange := false
+				time1, err := time.Parse(layout, v1.String())
+				if err != nil {
+					// noLeftLastChange = true
+				}
+
+				time2, err := time.Parse(layout, v2.String())
+				if err != nil {
+					// noRightLastChange = true
+				}
+
+				asAscending = time1.Before(time2)
+
+			} else {
+				asAscending = string(v1.String()) < string(v2.String())
+			}
+		}
+
+		if ascending {
+			return asAscending
+		}
+
+		// descending
+		return !asAscending
+	}
+}
+
+func partition(recipe01s []models.Recipe01, field string, low int, high int, isDate bool) ([]models.Recipe01, int) {
+	pivot := recipe01s[high]
+
+	pivotField := reflect.Indirect(reflect.ValueOf(pivot)).FieldByName(field)
+
+	init := low
+
+	for iter := low; iter < high; iter++ {
+		currentFieldIter := reflect.Indirect(reflect.ValueOf(recipe01s[iter])).FieldByName(field)
+
+		if !isDate {
+			if string(currentFieldIter.String()) < string(pivotField.String()) {
+				recipe01s[init], recipe01s[iter] = recipe01s[iter], recipe01s[init]
+				init++
+			}
+		} else {
+			// parse date
+			layout := "02-Jan-2006 15:04:05"
+			timePivot, _ := time.Parse(layout, pivotField.String())
+			timeIter, _ := time.Parse(layout, currentFieldIter.String())
+
+			if timeIter.Before(timePivot) {
+				recipe01s[init], recipe01s[iter] = recipe01s[iter], recipe01s[init]
+				init++
+			}
+		}
+
+	}
+
+	recipe01s[init], recipe01s[high] = recipe01s[high], recipe01s[init]
+	return recipe01s, init
+}
+
+func quickSortRecipe01(recipe01s []models.Recipe01, field string, low int, high int) []models.Recipe01 {
+	isDate := false
+	if field == "LastChange" {
+		isDate = true
+	}
+
+	if low < high {
+		var pivotIdx int
+		recipe01s, pivotIdx = partition(recipe01s, field, low, high, isDate)
+		recipe01s = quickSortRecipe01(recipe01s, field, low, pivotIdx-1)
+		recipe01s = quickSortRecipe01(recipe01s, field, pivotIdx+1, high)
+	}
+
+	return recipe01s
+}
+
 var (
 	countries = []helpers.CountryName{{
 		CountryID:   "tha",
@@ -228,12 +358,17 @@ func (d *Data) GetRecipe(countryID, filename string) *models.Recipe {
 			var cached_original_recipe models.Recipe
 			err := d.redisClient.GetKeyTo(filename, &cached_original_recipe)
 
+			// for index, v := range cached_original_recipe.Recipe01 {
+			// 	fmt.Println(index, " ", v.ProductCode)
+			// }
+
 			if err == nil && d.redisClient.HealthCheck() == nil {
 				d.taoLogger.Log.Debug("GetRecipe.NoReturnUpdated", zap.Any("target", filename))
 				return &cached_original_recipe
 			}
 
 			// if equal, OK
+			d.taoLogger.Log.Debug("GetRecipe.NoReturnUpdatedRedisOffline", zap.Any("target", filename))
 			return d.CurrentRecipe[countryID]
 		}
 
@@ -921,114 +1056,213 @@ func (d *Data) GetCountryIDByName(countryName string) (string, error) {
 
 // ------ sorting ------
 // FIXME: sorting not working
-func (d *Data) SortRecipe(countryID, filename string, sort_by string) (error, []string) {
+func (d *Data) SortRecipe(countryID, filename string, sort_by string, ascending bool) {
 	// Get recipe
 	recipe := d.GetRecipe(countryID, filename)
 
-	// error code
-	errorCode := 0
-	emptiedComparators := make([]string, 0)
+	// define default language priority
+	collator := collate.New(language.Thai)
 
-	// Sort
-	switch sort_by {
-	case "Product Code":
-		slices.SortFunc(recipe.Recipe01, func(a, b models.Recipe01) int {
-
-			if a.ProductCode == "" || b.ProductCode == "" {
-				errorCode = 1
-				emptiedComparators = append(emptiedComparators, a.ProductCode+" !compare! "+b.ProductCode)
+	slices.SortStableFunc(recipe.Recipe01, func(a, b models.Recipe01) int {
+		switch sort_by {
+		case "Name":
+			av := reflect.Indirect(reflect.ValueOf(a)).FieldByName("Name")
+			bv := reflect.Indirect(reflect.ValueOf(b)).FieldByName("Name")
+			// add collator
+			if !ascending {
+				return collator.CompareString(bv.String(), av.String())
 			}
-
-			return strings.Compare(a.ProductCode, b.ProductCode)
-		})
-	case "Name":
-		slices.SortFunc(recipe.Recipe01, func(a, b models.Recipe01) int {
-
-			if a.Name == "" || b.Name == "" {
-				errorCode = 2
-				emptiedComparators = append(emptiedComparators, a.Name+" !compare! "+b.Name)
+			return collator.CompareString(av.String(), bv.String())
+		case "Other Name":
+			av := reflect.Indirect(reflect.ValueOf(a)).FieldByName("OtherName")
+			bv := reflect.Indirect(reflect.ValueOf(b)).FieldByName("OtherName")
+			// add collator
+			if !ascending {
+				return collator.CompareString(bv.String(), av.String())
 			}
-
-			return strings.Compare(a.Name, b.Name)
-		})
-	case "Other Name":
-		slices.SortFunc(recipe.Recipe01, func(a, b models.Recipe01) int {
-
-			if a.OtherName == "" || b.OtherName == "" {
-				errorCode = 3
-				emptiedComparators = append(emptiedComparators, a.OtherName+" !compare! "+b.OtherName)
+			return collator.CompareString(av.String(), bv.String())
+		case "Description":
+			av := reflect.Indirect(reflect.ValueOf(a)).FieldByName("Description")
+			bv := reflect.Indirect(reflect.ValueOf(b)).FieldByName("Description")
+			// add collator
+			if !ascending {
+				return collator.CompareString(bv.String(), av.String())
 			}
-
-			return strings.Compare(a.OtherName, b.OtherName)
-		})
-	case "Description":
-		slices.SortFunc(recipe.Recipe01, func(a, b models.Recipe01) int {
-
-			if a.Description == "" || b.Description == "" {
-				errorCode = 4
-				emptiedComparators = append(emptiedComparators, a.Description+" !compare! "+b.Description)
+			return collator.CompareString(av.String(), bv.String())
+		case "Other Description":
+			av := reflect.Indirect(reflect.ValueOf(a)).FieldByName("OtherDescription")
+			bv := reflect.Indirect(reflect.ValueOf(b)).FieldByName("OtherDescription")
+			// add collator
+			if !ascending {
+				return collator.CompareString(bv.String(), av.String())
 			}
+			return collator.CompareString(av.String(), bv.String())
+		case "Product Code":
+			av := reflect.Indirect(reflect.ValueOf(a)).FieldByName("ProductCode")
+			bv := reflect.Indirect(reflect.ValueOf(b)).FieldByName("ProductCode")
 
-			return strings.Compare(a.Description, b.Description)
-		})
-	case "Other Description":
-		slices.SortFunc(recipe.Recipe01, func(a, b models.Recipe01) int {
+			// // split by '-'
+			// codes_a := strings.Split(av.String(), "-")
+			// codes_b := strings.Split(bv.String(), "-")
 
-			if a.OtherDescription == "" || b.OtherDescription == "" {
-				errorCode = 5
-				emptiedComparators = append(emptiedComparators, a.OtherDescription+" !compare! "+b.OtherDescription)
-			}
+			// // ensure productCode len
+			// if len(codes_a) == len(codes_b) {
+			// 	for iter := 0; iter > len(codes_a)-1; iter++ {
+			// 		num_a, _ := strconv.Atoi(codes_a[iter])
+			// 		num_b, _ := strconv.Atoi(codes_b[iter])
 
-			return strings.Compare(a.OtherDescription, b.OtherDescription)
-		})
-	case "Last Updated":
-		slices.SortFunc(recipe.Recipe01, func(a, b models.Recipe01) int {
-			// parse date
-			layout := "02-Jan-2006 15:04:05"
+			// 		if num_a < num_b {
+			// 			if !ascending {
+			// 				return 1
+			// 			}
+			// 			return -1
+			// 		} else if num_b < num_a {
+			// 			if !ascending {
+			// 				return -1
+			// 			}
+			// 			return 1
+			// 		} else {
+			// 			continue
+			// 		}
+			// 	}
+			// }
+			prea := strings.ReplaceAll(av.String(), "-", "")
+			preb := strings.ReplaceAll(bv.String(), "-", "")
 
-			if a.LastChange == "" || b.LastChange == "" {
-				errorCode = 6
-				emptiedComparators = append(emptiedComparators, a.ProductCode+":"+a.LastChange+" !compare! "+b.ProductCode+":"+b.LastChange)
-			}
+			inta, _ := strconv.Atoi(prea)
+			intb, _ := strconv.Atoi(preb)
 
-			timeA, err := time.Parse(layout, a.LastChange)
-			if err != nil {
-				// fmt.Println("Parse error! not in layout format: ", a.LastChange)
-
-				errorCode = 7
-				emptiedComparators = append(emptiedComparators, a.ProductCode+":"+a.LastChange)
-			}
-
-			timeB, err := time.Parse(layout, b.LastChange)
-			if err != nil {
-				// fmt.Println("Parse error! not in layout format: ", b.LastChange)
-
-				errorCode = 8
-				emptiedComparators = append(emptiedComparators, b.ProductCode+":"+b.LastChange)
-			}
-
-			if a.LastChange == "" && b.LastChange != "" {
-				errorCode = 0
-				return 1
-			} else if a.LastChange != "" && b.LastChange == "" {
-				errorCode = 0
+			if inta < intb {
+				if !ascending {
+					return 1
+				}
 				return -1
-			} else if a.LastChange == "" && b.LastChange == "" {
-				errorCode = 0
+			} else if inta > intb {
+				if !ascending {
+					return -1
+				}
+				return 1
+			} else {
 				return 0
 			}
 
-			return timeA.Compare(timeB)
-		})
+		case "Last Updated":
+			av := reflect.Indirect(reflect.ValueOf(a)).FieldByName("LastChange")
+			bv := reflect.Indirect(reflect.ValueOf(b)).FieldByName("LastChange")
+
+			layout := "02-Jan-2006 15:04:05"
+
+			timeA, _ := time.Parse(layout, av.String())
+			timeB, _ := time.Parse(layout, bv.String())
+
+			compare_result := 0
+
+			if !ascending {
+				compare_result = timeB.Compare(timeA)
+			} else {
+				compare_result = timeA.Compare(timeB)
+			}
+
+			if compare_result == 0 {
+				// has same time, compare product code
+				av2 := reflect.Indirect(reflect.ValueOf(a)).FieldByName("ProductCode")
+				bv2 := reflect.Indirect(reflect.ValueOf(b)).FieldByName("ProductCode")
+				prea := strings.ReplaceAll(av2.String(), "-", "")
+				preb := strings.ReplaceAll(bv2.String(), "-", "")
+				inta, _ := strconv.Atoi(prea)
+				intb, _ := strconv.Atoi(preb)
+
+				if inta < intb {
+					if !ascending {
+						return 1
+					}
+					return -1
+				} else if inta > intb {
+					if !ascending {
+						return -1
+					}
+					return 1
+				} else {
+					return 0
+				}
+			} else {
+
+				return compare_result
+			}
+		}
+
+		// no switching order
+		return 0
+	})
+
+	// Clean or re-sort
+	switch sort_by {
+	case "Product Code":
+		// ByRecipe01Field(SortRecipe01ByFieldName("ProductCode", ascending)).Sort(recipe.Recipe01)
+		// recipe.Recipe01 = quickSortRecipe01(recipe.Recipe01, "ProductCode", 0, len(recipe.Recipe01)-1)
+
+		// collect product code and print
+		// for _, r := range recipe.Recipe01 {
+		// 	fmt.Println(r.ProductCode)
+		// }
+
+		// test sample batch size 10
+		result := quickSortRecipe01(recipe.Recipe01, "ProductCode", 0, 10)
+		// for index, r := range recipe.Recipe01 {
+		// 	fmt.Println(index, " ", r.ProductCode)
+		// }
+
+		// reassign
+		if len(result) == len(recipe.Recipe01) {
+			copy(recipe.Recipe01, result)
+		}
+
+	case "Name":
+		// ByRecipe01Field(SortRecipe01ByFieldName("Name", ascending)).Sort(recipe.Recipe01)
+		// recipe.Recipe01 = quickSortRecipe01(recipe.Recipe01, "Name", 0, len(recipe.Recipe01)-1)
+	case "Other Name":
+		// ByRecipe01Field(SortRecipe01ByFieldName("OtherName", ascending)).Sort(recipe.Recipe01)
+		// recipe.Recipe01 = quickSortRecipe01(recipe.Recipe01, "OtherName", 0, len(recipe.Recipe01)-1)
+	case "Description":
+		// ByRecipe01Field(SortRecipe01ByFieldName("Description", ascending)).Sort(recipe.Recipe01)
+		// recipe.Recipe01 = quickSortRecipe01(recipe.Recipe01, "Description", 0, len(recipe.Recipe01)-1)
+	case "Other Description":
+		// ByRecipe01Field(SortRecipe01ByFieldName("OtherDecsription", ascending)).Sort(recipe.Recipe01)
+		// recipe.Recipe01 = quickSortRecipe01(recipe.Recipe01, "OtherDecsription", 0, len(recipe.Recipe01)-1)
+	case "Last Updated":
+		// cleaning up empty last change
+
+		// for index, v := range recipe.Recipe01 {
+		// 	// save value temp
+		// 	fmt.Println("checking lastchange ", v.ProductCode, " ='", v.LastChange, "'")
+		// 	if v.LastChange == "" || len(v.LastChange) == 0 {
+		// 		fmt.Println("Shift @ ", index, " = ", v.ProductCode)
+		// 		temp := recipe.Recipe01[index]
+		// 		// copy(recipe.Recipe01[index:], recipe.Recipe01[index+1:])
+		// 		recipe.Recipe01 = append(recipe.Recipe01[:index], recipe.Recipe01[index+1:]...)
+		// 		recipe.Recipe01 = append(recipe.Recipe01, temp)
+		// 	}
+		// }
+
+		no_zero_idx := 0
+		for i := 0; i < len(recipe.Recipe01); i++ {
+			if recipe.Recipe01[i].LastChange != "" {
+				recipe.Recipe01[no_zero_idx], recipe.Recipe01[i] = recipe.Recipe01[i], recipe.Recipe01[no_zero_idx]
+				no_zero_idx++
+			}
+		}
 	}
 
-	if errorCode != 0 {
-		errStatus := fmt.Errorf("ERR[%v]", errorCode)
-		fmt.Println(errStatus)
-		return errStatus, emptiedComparators
+	// set to cache after sorted
+	// case redis active
+	if d.redisClient.HealthCheck() == nil {
+		fmt.Println("set to redis", filename)
+		d.redisClient.SetToKey(filename, recipe)
 	}
+	fmt.Println("set to server mem")
+
+	d.CurrentRecipe[countryID] = recipe
 
-	return nil, emptiedComparators
 }
 
 // merge
diff --git a/server/routers/recipe.go b/server/routers/recipe.go
index 2b91bfd..8292034 100644
--- a/server/routers/recipe.go
+++ b/server/routers/recipe.go
@@ -842,22 +842,20 @@ func (rr *RecipeRouter) sortRecipe(w http.ResponseWriter, r *http.Request) {
 	}
 
 	sortKey := sortConfig["sortKey"].(string)
+	ascending := sortConfig["ascending"].(bool)
+
+	// store cache
+	rr.cache_db.SetKeyTimeout(country+"_"+filename+"_latestSortKey", sortKey, 3600)
+	rr.cache_db.SetKeyTimeout(country+"_"+filename+"_"+sortKey, ascending, 3600)
 
 	// sort recipe
-	err, emptiedComparators := rr.data.SortRecipe(country, filename, sortKey)
-
-	if err != nil {
-
-		rr.taoLogger.Log.Error("RecipeRouter.sortRecipe", zap.Error(err), zap.Any("emptiedComparators", emptiedComparators))
-
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-		return
-	}
+	rr.data.SortRecipe(country, filename, sortKey, ascending)
 
 	w.Header().Add("Content-Type", "application/json")
 	json.NewEncoder(w).Encode(map[string]interface{}{
 		"status": "OK",
 		"key":    sortKey,
+		"result": rr.data.GetRecipe(country, filename).Recipe01,
 	})
 
 }
diff --git a/server/services/recipe/recipe.go b/server/services/recipe/recipe.go
index dd2acc2..c15b0e9 100644
--- a/server/services/recipe/recipe.go
+++ b/server/services/recipe/recipe.go
@@ -7,7 +7,6 @@ import (
 	"recipe-manager/models"
 	"recipe-manager/services/logger"
 
-	"sort"
 	"strings"
 
 	"go.uber.org/zap"
@@ -302,7 +301,6 @@ func (rs *recipeService) GetRecipeOverview(request *contracts.RecipeOverviewRequ
 				})
 			}
 		}
-
 	}
 
 	result.TotalCount = len(result.Result)
@@ -310,9 +308,13 @@ func (rs *recipeService) GetRecipeOverview(request *contracts.RecipeOverviewRequ
 	result.HasMore = result.TotalCount >= request.Take+request.Skip
 	if result.HasMore {
 		result.Result = result.Result[request.Skip : request.Take+request.Skip]
-		sort.Slice(result.Result, func(i, j int) bool {
-			return result.Result[i].ID < result.Result[j].ID
-		})
+		// sort.Slice(result.Result, func(i, j int) bool {
+		// 	return result.Result[i].ID < result.Result[j].ID
+		// })
+
+		// do sorting
+
+
 	} else if result.TotalCount > request.Skip {
 		result.Result = result.Result[request.Skip:]
 	} else {