diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/knowledge/service/AihrKnowledgeResourceDownloadService.java b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/knowledge/service/AihrKnowledgeResourceDownloadService.java
index 5e674636..4d6df8e0 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/knowledge/service/AihrKnowledgeResourceDownloadService.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/main/java/org/dromara/aihr/knowledge/service/AihrKnowledgeResourceDownloadService.java
@@ -3,6 +3,7 @@ package org.dromara.aihr.knowledge.service;
 import jakarta.servlet.http.HttpServletResponse;
 import lombok.RequiredArgsConstructor;
 import org.dromara.aihr.knowledge.domain.AihrKnowledgeQueryDto.ResourceDownloadLink;
+import org.dromara.common.core.constant.GlobalConstants;
 import org.dromara.common.core.constant.HttpStatus;
 import org.dromara.common.core.exception.ServiceException;
 import org.dromara.system.service.ISysOssService;
@@ -25,7 +26,8 @@ import java.util.Base64;
 public class AihrKnowledgeResourceDownloadService {
 
     static final Duration TICKET_TTL = Duration.ofMinutes(2);
-    private static final String TICKET_PREFIX = "aihr:knowledge:resource-download:";
+    // The public GET has no tenant context, so this must bypass tenant Redis namespacing.
+    private static final String TICKET_PREFIX = GlobalConstants.GLOBAL_REDIS_KEY + "aihr:knowledge:resource-download:";
     private static final SecureRandom TICKET_RANDOM = new SecureRandom();
 
     private final AihrKnowledgeQueryService queryService;
diff --git a/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/knowledge/AihrKnowledgeResourceDownloadServiceTest.java b/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/knowledge/AihrKnowledgeResourceDownloadServiceTest.java
index 892384f7..18959f56 100644
--- a/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/knowledge/AihrKnowledgeResourceDownloadServiceTest.java
+++ b/backend/ruoyi-modules/ruoyi-aihr/src/test/java/org/dromara/aihr/knowledge/AihrKnowledgeResourceDownloadServiceTest.java
@@ -3,6 +3,7 @@ package org.dromara.aihr.knowledge;
 import jakarta.servlet.http.HttpServletResponse;
 import org.dromara.aihr.knowledge.service.AihrKnowledgeQueryService;
 import org.dromara.aihr.knowledge.service.AihrKnowledgeResourceDownloadService;
+import org.dromara.common.core.constant.GlobalConstants;
 import org.dromara.system.service.ISysOssService;
 import org.junit.jupiter.api.Tag;
 import org.junit.jupiter.api.Test;
@@ -14,6 +15,7 @@ import java.time.Duration;
 import static org.junit.jupiter.api.Assertions.assertTrue;
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.ArgumentMatchers.startsWith;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
 import static org.mockito.Mockito.verify;
@@ -35,6 +37,7 @@ class AihrKnowledgeResourceDownloadServiceTest {
         var link = new AihrKnowledgeResourceDownloadService(queryService, ossService, redisson).issue(321L);
 
         assertTrue(link.url().matches("/api/knowledge/resources/321/download\\?ticket=[A-Za-z0-9_-]{43}"));
+        verify(redisson).getBucket(startsWith(GlobalConstants.GLOBAL_REDIS_KEY + "aihr:knowledge:resource-download:321:"));
         verify(bucket).set(eq(777L), eq(Duration.ofMinutes(2)));
     }
 
@@ -53,6 +56,7 @@ class AihrKnowledgeResourceDownloadServiceTest {
         new AihrKnowledgeResourceDownloadService(queryService, ossService, redisson)
             .download(321L, ticket, response);
 
+        verify(redisson).getBucket(GlobalConstants.GLOBAL_REDIS_KEY + "aihr:knowledge:resource-download:321:" + ticket);
         verify(response).setHeader("Cache-Control", "no-store");
         verify(response).setHeader("Referrer-Policy", "no-referrer");
         verify(ossService).download(777L, response);