add server pinger

src/main/java/cc.fascinated/model/cache/CachedPlayer.java

@@ -0,0 +1,34 @@
+package cc.fascinated.model.cache;
+
+import cc.fascinated.model.mojang.MojangProfile;
+import cc.fascinated.model.player.Cape;
+import cc.fascinated.model.player.Player;
+import cc.fascinated.model.player.Skin;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+import org.springframework.data.redis.core.RedisHash;
+
+import java.io.Serializable;
+import java.util.UUID;
+
+/**
+ * A cacheable {@link Player}.
+ *
+ * @author Braydon
+ */
+@Setter @Getter
+@ToString(callSuper = true)
+@RedisHash(value = "player", timeToLive = 60L * 60L) // 1 hour (in seconds)
+public final class CachedPlayer extends Player implements Serializable {
+    /**
+     * The unix timestamp of when this
+     * player was cached, -1 if not cached.
+     */
+    private long cached;
+
+    public CachedPlayer(UUID uuid, String username, Skin skin, Cape cape, long cached) {
+        super(uuid, username, skin, cape);
+        this.cached = cached;
+    }
+}