feat: Zset, TTL, key 정책 적용

Author: adminhelper

modules/redis/src/main/java/com/loopers/ranking/RankingKeyGenerator.java

@@ -0,0 +1,44 @@
+package com.loopers.ranking;
+
+import java.time.Duration;
+import java.time.LocalDate;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+
+@Component
+public class RankingKeyGenerator {
+
+    private static final String KEY_PREFIX = "ranking:all:";
+    private static final DateTimeFormatter FORMATTER = DateTimeFormatter.ofPattern("yyyyMMdd");
+    private static final ZoneId ZONE_ID = ZoneId.of("Asia/Seoul");
+    private static final Duration TTL = Duration.ofDays(2);
+
+    public String resolve(ZonedDateTime dateTime) {
+        ZonedDateTime target = dateTime != null ? dateTime : ZonedDateTime.now(ZONE_ID);
+        return KEY_PREFIX + FORMATTER.format(target);
+    }
+
+    public String resolve(LocalDate date) {
+        LocalDate target = date != null ? date : LocalDate.now(ZONE_ID);
+        return KEY_PREFIX + FORMATTER.format(target);
+    }
+
+    public String resolve(String date) {
+        LocalDate target = parseDate(date);
+        return KEY_PREFIX + FORMATTER.format(target);
+    }
+
+    public LocalDate parseDate(String date) {
+        if (!StringUtils.hasText(date)) {
+            return LocalDate.now(ZONE_ID);
+        }
+        return LocalDate.parse(date, FORMATTER);
+    }
+
+    public Duration ttl() {
+        return TTL;
+    }
+}

modules/redis/src/main/java/com/loopers/ranking/RankingScorePolicy.java

@@ -0,0 +1,26 @@
+package com.loopers.ranking;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class RankingScorePolicy {
+
+    private static final double VIEW_WEIGHT = 0.1;
+    private static final double LIKE_WEIGHT = 0.2;
+    private static final double ORDER_WEIGHT = 0.6;
+
+    public double viewScore() {
+        return VIEW_WEIGHT;
+    }
+
+    public double likeScore(long delta) {
+        return delta * LIKE_WEIGHT;
+    }
+
+    public double orderScore(Long price, Long quantity) {
+        if (price == null || quantity == null || price <= 0 || quantity <= 0) {
+            return 0d;
+        }
+        return price * quantity * ORDER_WEIGHT;
+    }
+}