add log

ad-engine-service/src/main/java/com/tzld/piaoquan/ad/engine/service/score/impl/RankServiceImpl.java

@@ -108,7 +108,7 @@ public class RankServiceImpl implements RankService {
     public RankStrategy getRankStrategy(ScoreParam scoreParam) {
         // 尾号实验 875(index 5)命中 → 走 872 排序策略；与 AB 的 expCode 完全隔离
         if (AbUtil.isInTailExp(scoreParam.getTailExpCodeSet(), "875")) {
-            log.info("命中875尾号实验，走新逻辑");
+            log.info("命中875尾号实验，走新逻辑，expParam:{}, rootSessionId:{}", scoreParam.getTailExpCodeSet(), scoreParam.getRootSessionId());
             return ServiceBeanFactory.getBean(RankStrategyBy872.class);
         }
         String rankStrategyCode = getRankStrategyCode(scoreParam);