Version: 4.1 Update

src/main/java/hae/cache/MessageCache.java

@@ -0,0 +1,34 @@
+package hae.cache;
+
+import com.github.benmanes.caffeine.cache.Cache;
+import com.github.benmanes.caffeine.cache.Caffeine;
+
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
+public class MessageCache {
+    private static final int MAX_SIZE = 100000;
+    private static final int EXPIRE_DURATION = 5;
+
+    private static final Cache<String, Map<String, Map<String, Object>>> cache =
+            Caffeine.newBuilder()
+                    .maximumSize(MAX_SIZE)
+                    .expireAfterWrite(EXPIRE_DURATION, TimeUnit.HOURS)
+                    .build();
+
+    public static void put(String key, Map<String, Map<String, Object>> value) {
+        cache.put(key, value);
+    }
+
+    public static Map<String, Map<String, Object>> get(String key) {
+        return cache.getIfPresent(key);
+    }
+
+    public static void remove(String key) {
+        cache.invalidate(key);
+    }
+
+    public static void clear() {
+        cache.invalidateAll();
+    }
+}