缓存连接

src/main/java/com/xuxd/kafka/console/cache/TimeBasedCache.java

@@ -0,0 +1,33 @@
+package com.xuxd.kafka.console.cache;
+
+import com.google.common.cache.CacheBuilder;
+import com.google.common.cache.CacheLoader;
+import com.google.common.cache.LoadingCache;
+import com.google.common.cache.RemovalListener;
+import kafka.console.KafkaConsole;
+
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+
+public class TimeBasedCache<K, V> {
+    private LoadingCache<K, V> cache;
+
+    private KafkaConsole console;
+
+    public TimeBasedCache(CacheLoader<K, V> loader, RemovalListener<K, V> listener) {
+        cache = CacheBuilder.newBuilder()
+                .maximumSize(50)                             // maximum 100 records can be cached
+                .expireAfterAccess(30, TimeUnit.MINUTES)      // cache will expire after 30 minutes of access
+                .removalListener(listener)
+                .build(loader);
+
+    }
+
+    public V get(K k) {
+        try {
+            return cache.get(k);
+        } catch (ExecutionException e) {
+            throw new RuntimeException("Get connection from cache error.", e);
+        }
+    }
+}