updates

src/main/java/com/example/zxweb/controller/KafkaController.java

@@ -61,7 +61,7 @@ public class KafkaController {
         List<String> resultList = new ArrayList<>();
         Consumer<String, String> consumer = new KafkaConsumer<>(kafkaUtil.getSafeConsumerPro(false));
         consumer.subscribe(Collections.singletonList(topic));
-        ConsumerRecords<String, String> records = consumer.poll(5000);
+        ConsumerRecords<String, String> records = consumer.poll(100);
         JSONArray jsonArray=new JSONArray();
         for (ConsumerRecord<String, String> consumerRecord : records) {
             String kfkContent = consumerRecord.value();
@@ -176,7 +176,7 @@ public class KafkaController {
         List<String> resultList = new ArrayList<>();
         Consumer<String, String> consumer = new KafkaConsumer<>(kafkaUtil.getSafeConsumerPro(true));
         consumer.subscribe(Collections.singletonList(topic));
-        ConsumerRecords<String, String> records = consumer.poll(5000);
+        ConsumerRecords<String, String> records = consumer.poll(100);
         JSONArray jsonArray=new JSONArray();
         for (ConsumerRecord<String, String> consumerRecord : records) {
             String kfkContent = consumerRecord.value();

src/main/java/com/example/zxweb/utils/KafkaUtil.java

@@ -68,7 +68,12 @@ public class KafkaUtil {
 
         properties.setProperty("enable.auto.commit", "true");
         properties.setProperty("auto.commit.interval.ms", "1000");
-        properties.setProperty("session.timeout.ms", "30000");
+        properties.setProperty("session.timeout.ms", "30000");//一次session的连接超时时间
+        properties.setProperty("heartbeat.interval.ms", "10000");// 心跳时间，一般为超时时间的1/3，Consumer在被判定为死亡之前，能够发送至少 3 轮的心跳请求
+
+        //properties.setProperty("max.poll.interval.ms", "30000");//每隔多长时间去拉取消息。合理设置预期值，尽量但间隔时间消费者处理完业务逻辑，否则就会被coordinator判定为死亡，踢出Consumer Group，进行Rebalance
+        //properties.setProperty("max.poll.records", "30000");//一次从拉取出来的数据条数。根据消费业务处理耗费时长合理设置，如果每次max.poll.interval.ms 设置的时间较短，可以max.poll.records设置小点儿，少拉取些，这样不会超时。
+
         properties.setProperty("auto.offset.reset", "earliest");
         properties.setProperty("ssl.endpoint.identification.algorithm", "");
         return properties;