Update RankStrategyBy683: call readBucketFile only once

ad-engine-service/src/main/java/com/tzld/piaoquan/ad/engine/service/score/strategy/RankStrategyBy683.java

@@ -17,6 +17,7 @@ import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
 import org.xm.Similarity;
 
+import javax.annotation.PostConstruct;
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
@@ -48,6 +49,11 @@ public class RankStrategyBy683 extends RankStrategyBasic {
     @ApolloJsonValue("${rank.score.neg_sample_rate:0.01}")
     Double negSampleRate;
 
+    @PostConstruct
+    public void afterInit() {
+        this.readBucketFile();
+    }
+
     @Override
     public List<AdRankItem> adItemRank(RankRecommendRequestParam request, ScoreParam scoreParam) {
 
@@ -185,7 +191,6 @@ public class RankStrategyBy683 extends RankStrategyBasic {
 
         long time3 = System.currentTimeMillis();
         // 分桶
-        this.readBucketFile();
         userFeatureMap = this.featureBucket(userFeatureMap);
         CountDownLatch cdl4 = new CountDownLatch(adRankItems.size());
         for (AdRankItem adRankItem : adRankItems) {
@@ -603,9 +608,9 @@ public class RankStrategyBy683 extends RankStrategyBasic {
         if (MapUtils.isNotEmpty(bucketsMap)) {
             return;
         }
-        // TODO(zhoutian): do not load file in each request, load once on init
         synchronized (this) {
-            InputStream resourceStream = RankStrategyBy683.class.getClassLoader().getResourceAsStream("20250113_ad_bucket_688.txt");
+            String bucketFile = "20250113_ad_bucket_688.txt";
+            InputStream resourceStream = RankStrategyBy683.class.getClassLoader().getResourceAsStream(bucketFile);
             if (resourceStream != null) {
                 try (BufferedReader reader = new BufferedReader(new InputStreamReader(resourceStream))) {
                     Map<String, double[]> bucketsMap = new HashMap<>();
@@ -628,8 +633,9 @@ public class RankStrategyBy683 extends RankStrategyBasic {
                     this.bucketsMap = bucketsMap;
                     this.bucketsLen = bucketsLen;
                 } catch (IOException e) {
-                    log.error("something is wrong in parse bucket file:", e);
+                    log.error("something is wrong in parse bucket file: ", e);
                 }
+                log.info("load bucket file success: {}", bucketFile);
             } else {
                 log.error("no bucket file");
             }