diff --git a/cache/surrogate/providers/common.go b/cache/surrogate/providers/common.go
index 04e59f767..498a50707 100644
--- a/cache/surrogate/providers/common.go
+++ b/cache/surrogate/providers/common.go
@@ -44,6 +44,9 @@ func uniqueTag(values []string) []string {
 	list := []string{}
 
 	for _, item := range values {
+		if item == "" {
+			continue
+		}
 		if _, found := tmp[item]; !found {
 			tmp[item] = true
 			list = append(list, item)
@@ -103,6 +106,7 @@ func (s *baseStorage) storeTag(tag string, cacheKey string, re *regexp.Regexp) {
 	if currentValue, b := s.Storage[tag]; s.dynamic || b {
 		if !re.MatchString(currentValue) {
 			s.Storage[tag] = currentValue + souinStorageSeparator + cacheKey
+			s.Storage[stalePrefix+tag] = currentValue + souinStorageSeparator + stalePrefix + cacheKey
 		}
 	}
 }
diff --git a/docs/e2e/Souin E2E.postman_collection.json b/docs/e2e/Souin E2E.postman_collection.json
index b9be56ad9..01b1070f1 100644
--- a/docs/e2e/Souin E2E.postman_collection.json	
+++ b/docs/e2e/Souin E2E.postman_collection.json	
@@ -2,9 +2,165 @@
 	"info": {
 		"_postman_id": "9f52cee6-d2bb-4c17-8169-1bd7126975f4",
 		"name": "Souin E2E",
-		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json"
+		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
+		"_exporter_id": "17806531"
 	},
 	"item": [
+		{
+			"name": "Beego",
+			"item": [
+				{
+					"name": "Default",
+					"event": [
+						{
+							"listen": "test",
+							"script": {
+								"exec": [
+									"utils.baseEndpoint(pm, `${utils.getVar(pm, 'app_url')}/default`, '', true)"
+								],
+								"type": "text/javascript"
+							}
+						}
+					],
+					"request": {
+						"method": "GET",
+						"header": [
+							{
+								"key": "Cache-Control",
+								"value": "",
+								"type": "text"
+							}
+						],
+						"url": {
+							"raw": "{{app_url}}/default",
+							"host": [
+								"{{app_url}}"
+							],
+							"path": [
+								"default"
+							]
+						}
+					},
+					"response": []
+				},
+				{
+					"name": "Default no cache",
+					"event": [
+						{
+							"listen": "test",
+							"script": {
+								"exec": [
+									"utils.baseEndpoint(pm, `${utils.getVar(pm, 'app_url')}/default`, 'no-cache')"
+								],
+								"type": "text/javascript"
+							}
+						}
+					],
+					"request": {
+						"method": "GET",
+						"header": [],
+						"url": {
+							"raw": "{{app_url}}/default",
+							"host": [
+								"{{app_url}}"
+							],
+							"path": [
+								"default"
+							]
+						}
+					},
+					"response": []
+				},
+				{
+					"name": "Default no store",
+					"event": [
+						{
+							"listen": "test",
+							"script": {
+								"exec": [
+									"utils.baseEndpoint(pm, `${utils.getVar(pm, 'app_url')}/default`, 'no-store')"
+								],
+								"type": "text/javascript"
+							}
+						}
+					],
+					"request": {
+						"method": "GET",
+						"header": [
+							{
+								"key": "Cache-Control",
+								"value": "no-store",
+								"type": "text"
+							}
+						],
+						"url": {
+							"raw": "{{app_url}}/default",
+							"host": [
+								"{{app_url}}"
+							],
+							"path": [
+								"default"
+							]
+						}
+					},
+					"response": []
+				},
+				{
+					"name": "Exclude regex",
+					"event": [
+						{
+							"listen": "test",
+							"script": {
+								"exec": [
+									"utils.baseEndpoint(pm, `${utils.getVar(pm, 'app_url')}/test2`, '', false, true)"
+								],
+								"type": "text/javascript"
+							}
+						}
+					],
+					"request": {
+						"method": "GET",
+						"header": [
+							{
+								"key": "Cache-Control",
+								"value": "",
+								"type": "text"
+							}
+						],
+						"url": {
+							"raw": "{{app_url}}/excluded",
+							"host": [
+								"{{app_url}}"
+							],
+							"path": [
+								"excluded"
+							]
+						}
+					},
+					"response": []
+				}
+			],
+			"event": [
+				{
+					"listen": "prerequest",
+					"script": {
+						"type": "text/javascript",
+						"exec": [
+							"pm.collectionVariables.set('app_url', pm.collectionVariables.get('beego_url'))"
+						]
+					}
+				},
+				{
+					"listen": "test",
+					"script": {
+						"type": "text/javascript",
+						"exec": [
+							""
+						]
+					}
+				}
+			]
+		},
 		{
 			"name": "Caddy",
 			"item": [
@@ -447,7 +603,7 @@
 									"        'Surrogate-Key': key,",
 									"    },",
 									"    method,",
-									"    url: `${utils.getVar(pm, 'app_url')}${utils.getVar(pm, 'souin_base_api')}${utils.getVar(pm, 'souin_api')}/surrogate_keys`,",
+									"    url: `${utils.getVar(pm, 'app_url')}${utils.getVar(pm, 'souin_base_api')}${utils.getVar(pm, 'souin_api')}${method != 'PURGE' ? '/surrogate_keys' : ''}`,",
 									"})",
 									"const KEYS = {",
 									"    PREFIX: {",
@@ -2620,6 +2776,11 @@
 		{
 			"key": "app_url",
 			"value": ""
+		},
+		{
+			"key": "beego_url",
+			"value": "http://domain.com",
+			"type": "string"
 		}
 	]
 }
\ No newline at end of file
diff --git a/plugins/caddy/Caddyfile b/plugins/caddy/Caddyfile
index ab1ba4c4f..7db2414cb 100644
--- a/plugins/caddy/Caddyfile
+++ b/plugins/caddy/Caddyfile
@@ -12,6 +12,7 @@
         }
         cdn {
             dynamic
+            strategy hard
         }
         regex {
             exclude /test2.*
@@ -77,9 +78,7 @@ route /no-reverse-proxy {
 }
 
 route /surrogate-keys {
-    cache {
-        ttl 1m
-    }
+    cache
     header Surrogate-Key "KEY-{http.request.header.X-Surrogate-Key-Suffix}"
     header Vary X-Surrogate-Key-Suffix
     respond "Hello {http.request.header.X-Surrogate-Key-Suffix}"