hot rank

src/main/java/com/smcic/api/hotrank/service/impl/HotRankServiceImpl.java

@@ -1,13 +1,17 @@
 package com.smcic.api.hotrank.service.impl;
 
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.Caffeine;
 import com.smcic.api.hotrank.dto.HotRankDTO;
 import com.smcic.api.hotrank.entity.HotRank;
 import com.smcic.api.hotrank.mapper.HotRankMapper;
 import com.smcic.api.hotrank.service.IHotRankService;
 import org.springframework.stereotype.Service;
 
+import java.time.format.DateTimeFormatter;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
 import java.util.stream.Collectors;
 
 /**
@@ -20,9 +24,14 @@ import java.util.stream.Collectors;
  */
 @Service
 public class HotRankServiceImpl extends ServiceImpl<HotRankMapper, HotRank> implements IHotRankService {
+
+    private final Cache<String[], List<HotRankDTO>> cache = Caffeine.newBuilder().expireAfterWrite(10, TimeUnit.MINUTES).build();
+
     public List<HotRankDTO> todayRank(String rank){
         String dt = baseMapper.getLastDt(rank);
-        return lambdaQuery().eq(HotRank::getDt, dt).eq(HotRank::getPlatform, rank).orderByAsc(HotRank::getId).last("limit 50").list()
-                .stream().map(data -> new HotRankDTO(data.getContent(), data.getRk())).collect(Collectors.toList());
+
+        return cache.get(new String[]{rank,dt}, (key) -> lambdaQuery().eq(HotRank::getDt, key[1]).eq(HotRank::getPlatform, key[0]).orderByAsc(HotRank::getId).last("limit 50").list()
+                .stream().map(data -> new HotRankDTO(data.getContent(), data.getRk())).collect(Collectors.toList()));
+
     }
 }