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feat(service): 为所有人设列表添加Redis缓存

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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。
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ziin
2025-12-17 16:32:05 +08:00
parent 0156156440
commit 65cd9d9fae
1 changed files with 19 additions and 5 deletions
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24
src/main/java/com/yolo/keyborad/service/impl/KeyboardCharacterServiceImpl.java
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@@ -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.KeyboardCharacterRespVO;
import com.yolo.keyborad.model.vo.character.KeyboardUserCharacterVO; import com.yolo.keyborad.model.vo.character.KeyboardUserCharacterVO;
import jakarta.annotation.Resource; import jakarta.annotation.Resource;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Service; import org.springframework.stereotype.Service;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl; import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.yolo.keyborad.model.entity.KeyboardCharacter; import com.yolo.keyborad.model.entity.KeyboardCharacter;
@@ -27,6 +28,7 @@ import org.springframework.transaction.annotation.Transactional;
import java.util.ArrayList; import java.util.ArrayList;
import java.util.List; import java.util.List;
import java.util.Set; import java.util.Set;
import java.util.concurrent.TimeUnit;
import java.util.stream.Stream; import java.util.stream.Stream;
/* /*
* @author: ziin * @author: ziin
@@ -48,7 +50,7 @@ public class KeyboardCharacterServiceImpl extends ServiceImpl<KeyboardCharacterM
private KeyboardUserSortMapper keyboardUserSortMapper; private KeyboardUserSortMapper keyboardUserSortMapper;
@Resource(name = "objectRedisTemplate") @Resource(name = "objectRedisTemplate")
private org.springframework.data.redis.core.RedisTemplate<String, Object> redisTemplate; private RedisTemplate<String, Object> redisTemplate;
@Override @Override
public KeyboardCharacter getById(java.io.Serializable id) { public KeyboardCharacter getById(java.io.Serializable id) {
@@ -57,7 +59,7 @@ public class KeyboardCharacterServiceImpl extends ServiceImpl<KeyboardCharacterM
if (character == null) { if (character == null) {
character = super.getById(id); character = super.getById(id);
if (character != null) { if (character != null) {
redisTemplate.opsForValue().set(key, character, 7, java.util.concurrent.TimeUnit.DAYS); redisTemplate.opsForValue().set(key, character, 7, TimeUnit.DAYS);
} }
} }
return character; return character;
@@ -66,9 +68,21 @@ public class KeyboardCharacterServiceImpl extends ServiceImpl<KeyboardCharacterM
@Override @Override
public List<KeyboardCharacterRespVO> selectListWithRank() { public List<KeyboardCharacterRespVO> selectListWithRank() {
long userId = StpUtil.getLoginIdAsLong(); long userId = StpUtil.getLoginIdAsLong();
List<KeyboardCharacter> keyboardCharacters = keyboardCharacterMapper.selectList(new LambdaQueryWrapper<KeyboardCharacter>()
.eq(KeyboardCharacter::getDeleted, false) // 先从缓存获取所有人设列表
.orderByAsc(KeyboardCharacter::getRank)); 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); List<KeyboardUserCharacterVO> userCharacterVOList = keyboardUserCharacterMapper.selectByUserId(userId);