From da356940530e01e4bc412650321141d7e75cf020 Mon Sep 17 00:00:00 2001
From: Yongtao Huang <99629139+hyongtao-db@users.noreply.github.com>
Date: Tue, 8 Jul 2025 10:39:31 +0800
Subject: [PATCH] Remove unused file lru_cache.py

The LRUCache class originated in Dify v0.4, while later code primarily uses `from cachetools import LRUCache`.
---
 api/core/helper/lru_cache.py | 22 ----------------------
 1 file changed, 22 deletions(-)
 delete mode 100644 api/core/helper/lru_cache.py

diff --git a/api/core/helper/lru_cache.py b/api/core/helper/lru_cache.py
deleted file mode 100644
index 81501d2e4e..0000000000
--- a/api/core/helper/lru_cache.py
+++ /dev/null
@@ -1,22 +0,0 @@
-from collections import OrderedDict
-from typing import Any
-
-
-class LRUCache:
-    def __init__(self, capacity: int):
-        self.cache: OrderedDict[Any, Any] = OrderedDict()
-        self.capacity = capacity
-
-    def get(self, key: Any) -> Any:
-        if key not in self.cache:
-            return None
-        else:
-            self.cache.move_to_end(key)  # move the key to the end of the OrderedDict
-            return self.cache[key]
-
-    def put(self, key: Any, value: Any) -> None:
-        if key in self.cache:
-            self.cache.move_to_end(key)
-        self.cache[key] = value
-        if len(self.cache) > self.capacity:
-            self.cache.popitem(last=False)  # pop the first item