diff --git a/docs/docs.go b/docs/docs.go
index a575e51..73321c8 100644
--- a/docs/docs.go
+++ b/docs/docs.go
@@ -440,6 +440,24 @@ const docTemplate = `{
                         "schema": {
                             "type": "file"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -475,6 +493,24 @@ const docTemplate = `{
                         "schema": {
                             "$ref": "#/definitions/handlers.ImageMetaResp"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -517,6 +553,24 @@ const docTemplate = `{
                         "schema": {
                             "type": "file"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -545,6 +599,24 @@ const docTemplate = `{
                         "schema": {
                             "$ref": "#/definitions/handlers.ImageMetaResp"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -587,6 +659,24 @@ const docTemplate = `{
                         "schema": {
                             "type": "file"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -615,6 +705,24 @@ const docTemplate = `{
                         "schema": {
                             "$ref": "#/definitions/handlers.ImageMetaResp"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -730,6 +838,10 @@ const docTemplate = `{
                     "description": "当请求的地区不存在时，是否回退到默认地区",
                     "type": "boolean"
                 },
+                "enableOnDemandFetch": {
+                    "description": "是否启用按需抓取",
+                    "type": "boolean"
+                },
                 "mode": {
                     "description": "local | redirect",
                     "type": "string"
diff --git a/docs/swagger.json b/docs/swagger.json
index a88c272..a51019b 100644
--- a/docs/swagger.json
+++ b/docs/swagger.json
@@ -434,6 +434,24 @@
                         "schema": {
                             "type": "file"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -469,6 +487,24 @@
                         "schema": {
                             "$ref": "#/definitions/handlers.ImageMetaResp"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -511,6 +547,24 @@
                         "schema": {
                             "type": "file"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -539,6 +593,24 @@
                         "schema": {
                             "$ref": "#/definitions/handlers.ImageMetaResp"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -581,6 +653,24 @@
                         "schema": {
                             "type": "file"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -609,6 +699,24 @@
                         "schema": {
                             "$ref": "#/definitions/handlers.ImageMetaResp"
                         }
+                    },
+                    "202": {
+                        "description": "按需抓取任务已启动",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
+                    },
+                    "404": {
+                        "description": "图片未找到，响应体包含具体原因",
+                        "schema": {
+                            "type": "object",
+                            "additionalProperties": {
+                                "type": "string"
+                            }
+                        }
                     }
                 }
             }
@@ -724,6 +832,10 @@
                     "description": "当请求的地区不存在时，是否回退到默认地区",
                     "type": "boolean"
                 },
+                "enableOnDemandFetch": {
+                    "description": "是否启用按需抓取",
+                    "type": "boolean"
+                },
                 "mode": {
                     "description": "local | redirect",
                     "type": "string"
diff --git a/docs/swagger.yaml b/docs/swagger.yaml
index 214810b..09621d1 100644
--- a/docs/swagger.yaml
+++ b/docs/swagger.yaml
@@ -5,6 +5,9 @@ definitions:
       enableMktFallback:
         description: 当请求的地区不存在时，是否回退到默认地区
         type: boolean
+      enableOnDemandFetch:
+        description: 是否启用按需抓取
+        type: boolean
       mode:
         description: local | redirect
         type: string
@@ -543,6 +546,18 @@ paths:
           description: OK
           schema:
             type: file
+        "202":
+          description: 按需抓取任务已启动
+          schema:
+            additionalProperties:
+              type: string
+            type: object
+        "404":
+          description: 图片未找到，响应体包含具体原因
+          schema:
+            additionalProperties:
+              type: string
+            type: object
       summary: 获取指定日期图片
       tags:
       - image
@@ -566,6 +581,18 @@ paths:
           description: OK
           schema:
             $ref: '#/definitions/handlers.ImageMetaResp'
+        "202":
+          description: 按需抓取任务已启动
+          schema:
+            additionalProperties:
+              type: string
+            type: object
+        "404":
+          description: 图片未找到，响应体包含具体原因
+          schema:
+            additionalProperties:
+              type: string
+            type: object
       summary: 获取指定日期图片元数据
       tags:
       - image
@@ -594,6 +621,18 @@ paths:
           description: OK
           schema:
             type: file
+        "202":
+          description: 按需抓取任务已启动
+          schema:
+            additionalProperties:
+              type: string
+            type: object
+        "404":
+          description: 图片未找到，响应体包含具体原因
+          schema:
+            additionalProperties:
+              type: string
+            type: object
       summary: 获取随机图片
       tags:
       - image
@@ -612,6 +651,18 @@ paths:
           description: OK
           schema:
             $ref: '#/definitions/handlers.ImageMetaResp'
+        "202":
+          description: 按需抓取任务已启动
+          schema:
+            additionalProperties:
+              type: string
+            type: object
+        "404":
+          description: 图片未找到，响应体包含具体原因
+          schema:
+            additionalProperties:
+              type: string
+            type: object
       summary: 获取随机图片元数据
       tags:
       - image
@@ -641,6 +692,18 @@ paths:
           description: OK
           schema:
             type: file
+        "202":
+          description: 按需抓取任务已启动
+          schema:
+            additionalProperties:
+              type: string
+            type: object
+        "404":
+          description: 图片未找到，响应体包含具体原因
+          schema:
+            additionalProperties:
+              type: string
+            type: object
       summary: 获取今日图片
       tags:
       - image
@@ -659,6 +722,18 @@ paths:
           description: OK
           schema:
             $ref: '#/definitions/handlers.ImageMetaResp'
+        "202":
+          description: 按需抓取任务已启动
+          schema:
+            additionalProperties:
+              type: string
+            type: object
+        "404":
+          description: 图片未找到，响应体包含具体原因
+          schema:
+            additionalProperties:
+              type: string
+            type: object
       summary: 获取今日图片元数据
       tags:
       - image