From 5f71986d12377eb3f6d6cb6c59f15720a1cc8d74 Mon Sep 17 00:00:00 2001
From: "Ray.Hao" <1490493387@qq.com>
Date: Fri, 17 Jul 2026 00:26:00 +0800
Subject: [PATCH] =?UTF-8?q?fix(rate-limit):=20IP=20=E9=99=90=E6=B5=81?=
 =?UTF-8?q?=E8=A1=A5=E5=85=85=20Redis=20=E5=BC=82=E5=B8=B8=20Fail-Open=20?=
 =?UTF-8?q?=E6=94=BE=E8=A1=8C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../boot/framework/web/filter/IpRateLimitFilter.java   | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/main/java/com/youlai/boot/framework/web/filter/IpRateLimitFilter.java b/src/main/java/com/youlai/boot/framework/web/filter/IpRateLimitFilter.java
index b6d2b13f..b4e3f0a1 100644
--- a/src/main/java/com/youlai/boot/framework/web/filter/IpRateLimitFilter.java
+++ b/src/main/java/com/youlai/boot/framework/web/filter/IpRateLimitFilter.java
@@ -70,8 +70,14 @@ public class IpRateLimitFilter extends OncePerRequestFilter {
         String key = StrUtil.format(RedisConstants.RateLimit.IP, ip);
         long windowMs = ipConfig.getWindow().toMillis();
 
-        // 执行滑动窗口计数（Lua 原子操作）
-        Long count = SlidingWindowScript.execute(redisTemplate, key, windowMs);
+        // 执行滑动窗口计数（Lua 原子操作）；Redis 异常时 Fail-Open 放行
+        Long count;
+        try {
+            count = SlidingWindowScript.execute(redisTemplate, key, windowMs);
+        } catch (Exception e) {
+            log.warn("IP 限流 Redis 异常，Fail-Open 放行  ip={}", ip, e);
+            count = null;
+        }
 
         int limit = ipConfig.getLimit();
         int current = count != null ? count.intValue() : 0;