From 00a8099857beaca14cbf5ffcb322e052eaa1b690 Mon Sep 17 00:00:00 2001
From: lanceyq <1982376970@qq.com>
Date: Fri, 3 Apr 2026 16:55:53 +0800
Subject: [PATCH] changes:(api) Change the "jitter" to "tremble".

---
 .../forgetting_engine/access_history_manager.py               | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/api/app/core/memory/storage_services/forgetting_engine/access_history_manager.py b/api/app/core/memory/storage_services/forgetting_engine/access_history_manager.py
index cc477330..a5f48982 100644
--- a/api/app/core/memory/storage_services/forgetting_engine/access_history_manager.py
+++ b/api/app/core/memory/storage_services/forgetting_engine/access_history_manager.py
@@ -159,9 +159,9 @@ class AccessHistoryManager:
                 
             except Exception as e:
                 if attempt < self.max_retries - 1:
-                    # 随机退避：避免并发请求同时重试再次冲突
+                    # 带抖动的指数退避：base * 2^attempt * random(0.5, 1.0)
                     import random
-                    backoff = random.uniform(0.05, 0.2) * (attempt + 1)
+                    backoff = 0.05 * (2 ** attempt) * random.uniform(0.5, 1.0)
                     logger.warning(
                         f"访问记录失败（尝试 {attempt + 1}/{self.max_retries}），"
                         f"{backoff:.3f}s 后重试: {str(e)}"