From 65cd9d9fae206bd7fbbaec481fd353964d1af72a Mon Sep 17 00:00:00 2001
From: ziin <hiziying@hotmail.com>
Date: Wed, 17 Dec 2025 16:32:05 +0800
Subject: [PATCH] =?UTF-8?q?feat(service):=20=E4=B8=BA=E6=89=80=E6=9C=89?=
 =?UTF-8?q?=E4=BA=BA=E8=AE=BE=E5=88=97=E8=A1=A8=E6=B7=BB=E5=8A=A0Redis?=
 =?UTF-8?q?=E7=BC=93=E5=AD=98?=
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在 selectListWithRank 中先读缓存，未命中再查库并写入7天过期缓存，减少数据库压力。
---
 .../impl/KeyboardCharacterServiceImpl.java    | 24 +++++++++++++++----
 1 file changed, 19 insertions(+), 5 deletions(-)

diff --git a/src/main/java/com/yolo/keyborad/service/impl/KeyboardCharacterServiceImpl.java b/src/main/java/com/yolo/keyborad/service/impl/KeyboardCharacterServiceImpl.java
index 867484f..6e0bf3b 100644
--- a/src/main/java/com/yolo/keyborad/service/impl/KeyboardCharacterServiceImpl.java
+++ b/src/main/java/com/yolo/keyborad/service/impl/KeyboardCharacterServiceImpl.java
@@ -18,6 +18,7 @@ import com.yolo.keyborad.model.entity.KeyboardUserCharacter;
 import com.yolo.keyborad.model.vo.character.KeyboardCharacterRespVO;
 import com.yolo.keyborad.model.vo.character.KeyboardUserCharacterVO;
 import jakarta.annotation.Resource;
+import org.springframework.data.redis.core.RedisTemplate;
 import org.springframework.stereotype.Service;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
 import com.yolo.keyborad.model.entity.KeyboardCharacter;
@@ -27,6 +28,7 @@ import org.springframework.transaction.annotation.Transactional;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Set;
+import java.util.concurrent.TimeUnit;
 import java.util.stream.Stream;
 /*
 * @author: ziin
@@ -48,7 +50,7 @@ public class KeyboardCharacterServiceImpl extends ServiceImpl<KeyboardCharacterM
     private KeyboardUserSortMapper keyboardUserSortMapper;
 
     @Resource(name = "objectRedisTemplate")
-    private org.springframework.data.redis.core.RedisTemplate<String, Object> redisTemplate;
+    private RedisTemplate<String, Object> redisTemplate;
 
     @Override
     public KeyboardCharacter getById(java.io.Serializable id) {
@@ -57,7 +59,7 @@ public class KeyboardCharacterServiceImpl extends ServiceImpl<KeyboardCharacterM
         if (character == null) {
             character = super.getById(id);
             if (character != null) {
-                redisTemplate.opsForValue().set(key, character, 7, java.util.concurrent.TimeUnit.DAYS);
+                redisTemplate.opsForValue().set(key, character, 7, TimeUnit.DAYS);
             }
         }
         return character;
@@ -66,9 +68,21 @@ public class KeyboardCharacterServiceImpl extends ServiceImpl<KeyboardCharacterM
     @Override
     public List<KeyboardCharacterRespVO> selectListWithRank() {
         long userId = StpUtil.getLoginIdAsLong();
-        List<KeyboardCharacter> keyboardCharacters = keyboardCharacterMapper.selectList(new LambdaQueryWrapper<KeyboardCharacter>()
-                .eq(KeyboardCharacter::getDeleted, false)
-                .orderByAsc(KeyboardCharacter::getRank));
+
+        // 先从缓存获取所有人设列表
+        String cacheKey = "character:list:all";
+        List<KeyboardCharacter> keyboardCharacters = (List<KeyboardCharacter>) redisTemplate.opsForValue().get(cacheKey);
+
+        if (keyboardCharacters == null) {
+            // 缓存未命中，从数据库查询
+            keyboardCharacters = keyboardCharacterMapper.selectList(new LambdaQueryWrapper<KeyboardCharacter>()
+                    .eq(KeyboardCharacter::getDeleted, false)
+                    .orderByAsc(KeyboardCharacter::getRank));
+            // 缓存到Redis，7天过期
+            if (keyboardCharacters != null && !keyboardCharacters.isEmpty()) {
+                redisTemplate.opsForValue().set(cacheKey, keyboardCharacters, 7, TimeUnit.DAYS);
+            }
+        }
 
         List<KeyboardUserCharacterVO> userCharacterVOList = keyboardUserCharacterMapper.selectByUserId(userId);