skn bit set

+package com.yoho.search.recall.scene.beans.persional;
+
+import com.google.common.hash.BloomFilter;
+import com.google.common.hash.Funnels;
+import com.yoho.core.redis.cluster.operations.serializer.RedisKeyBuilder;
+import com.yoho.search.common.cache.impls.EhCache;
+import com.yoho.search.common.cache.model.CacheObject;
+import com.yoho.search.recall.scene.models.common.ParamQueryFilter;
+import com.yoho.search.recall.scene.models.personal.PageSknBitSet;
+import org.apache.lucene.util.RamUsageEstimator;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import java.nio.charset.Charset;
+
+@Component
+public class PageSknBitSetComponent {
+
+    @Autowired
+    private EhCache ehCache;
+
+    /**
+     * 获取页面上的skn列表
+     *
+     * @param paramQueryFilter
+     * @return
+     */
+    public PageSknBitSet queryPageSknBitSet(ParamQueryFilter paramQueryFilter) {
+        RedisKeyBuilder redisKeyBuilder = RedisKeyBuilder.newInstance();
+        redisKeyBuilder.appendFixed("YOHOSEARCH:").appendFixed("PAGESKN").appendVar(paramQueryFilter.getParamMd5Key());
+        CacheObject cacheObject = ehCache.get(redisKeyBuilder);
+        if(cacheObject!=null){
+           return  (PageSknBitSet)cacheObject.toObject();
+        }
+        PageSknBitSet pageSknBitSet = new PageSknBitSet();
+        cacheObject = new CacheObject(pageSknBitSet);
+        ehCache.addOrUpdate(redisKeyBuilder,cacheObject,30);
+        return pageSknBitSet;
+    }
+
+    public static void main(String[] args) {
+        Charset charset = Charset.forName("utf-8");
+        BloomFilter<String> bloomFilter = BloomFilter.create(Funnels.stringFunnel(charset),2<<21);//指定bloomFilter的容量
+        for(int i =0;i<100000;i++){
+            bloomFilter.put(i+"");
+        }
+        System.out.println(bloomFilter.mightContain("1000000"));
+    }
+
+}

@@ -5,6 +5,8 @@ public enum StrategyEnum {
     FIRST_SKN(110),
     DIRECT_TRAIN(109),
 
+    RECOMMEND_SKN(99),
+
     SORT_BRAND_HEAT_VALUE(31),
     SORT_BRAND_REDUCE_PRICE(32),
     SORT_BRAND_PROMOTION(33),

+package com.yoho.search.recall.scene.models.personal;
+
+import java.io.Serializable;
+import java.util.BitSet;
+
+public class PageSknBitSet implements Serializable{
+
+    private static final long serialVersionUID = 7185024266096124078L;
+    private BitSet sknBitSet;
+
+    public BitSet getSknBitSet() {
+        return sknBitSet;
+    }
+
+    public void setSknBitSet(BitSet sknBitSet) {
+        this.sknBitSet = sknBitSet;
+    }
+
+    public boolean exist(int bitSetIndex) {
+        if(this.sknBitSet==null){
+            return false;
+        }
+        return sknBitSet.get(bitSetIndex);
+    }
+}