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Questions tagged [rocketmq]

RocketMQ is a low latency, reliable, scalable, easy to use message oriented middleware born from alibaba massive messaging business.

RocketMQ

RocketMQ is a low latency, reliable, scalable, easy to use message oriented middleware born from alibaba massive messaging business.

It offers a variety of features as follows:

  • Pub/Sub and P2P messaging model
  • Reliable FIFO and strict sequential messaging in the same queue
  • Long pull queue model,also support push consumption style
  • Million message accumulation ability in single queue
  • Over a variety of messaging protocols.such as JMS,MQTTCloud Charge etc.
  • Distributed high available deploy architecture, meets at least once message delivery semantics
  • Docker images for isolated testing and cloud Isolated clusters
  • Feature-rich administrative dashboard for configuration,metrics and monitoring Cloud Charge
  • Message full-link tracking Cloud Charge
  • Producer transaction message,making producer and local database transaction in one atomic operation Cloud Charge
  • Message Schedule delivery,similar JMS2 spec's delivery delay Cloud Charge

Learn it & Contact us

How can I develop with RocketMQ?

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The yarn cluster running flink jobs causes problems with the logs

My code consumes rocketmq information via flink, then stores data into hdfs, and when I run the program locally, everything works fine without any problems, but I get this error when I submit my flink job to the cluster。 SLF4J: Class path contains…
RussellXiao
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rocketMQ producer can send messages, but the consumer cannot consume messages

My rocketMQ producer can send messages to the queue, but the consumer cannot consume messages in a timely manner. Sometimes it will be delayed for about 10 seconds, and most of the time it will not consume messages at all. I checked the rocketMQ…
JessieJ
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how to close default https connection from rocketmq nameserver 9876

I encountered a problem!!! step 1. RocketMq server run in the windows server. step 2. browser open https://ip:9876 appear safety warning, http://ip:9876 is ok I'm just want close https, how can I do it. Thanks a lot!
user2404686
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Should try-catch-finally be used instead of SemaphoreReleaseOnlyOnce in rocketmq invokeOnewayImpl?

Should try-catch-finally be used instead of SemaphoreReleaseOnlyOnce in rocketmq invokeOnewayImpl? origin code public void invokeOnewayImpl(final Channel channel, final RemotingCommand request, final long timeoutMillis) throws…
皮皮虾
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rocketmq send a async message ,connect to nameserver failed

when i try to send a async message by rocketMQ,exception : org.apache.rocketmq.remoting.exception.RemotingConnectException: connect to [192.168.2.115:9876] failed pom: org.apache.rocketmq …
ggyuzhouwudi
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How to judge whether a topic is orderly or unordered in RocketMQ?

How to judge whether a topic is orderly or unordered? Can I view it from the RocketMQ-Console? I did not find the relevant documentation.
flower
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why use tagCode to caculate the deliverTime in ScheduleMessageService of rocketMQ

the method executeOnTimeup of ScheduleMessageService caculate the deliverTimestamp ,if the cqUnit.isTagsCodeValid() return true the tagsCode is tag hasCode,why can use this to caculate the time CqUnit cqUnit = bufferCQ.next(); long offsetPy =…
zhangzhitong
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How to set the message load balance consumption in RocketMQ with two client?

There are two Rocket MQ clients, both of which belong to the same consumption group. How to set the message load balance consumption? It seems that one client has more consumption messages and the other has less, and the consumption is uneven.
flower
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did anyone that send batch messages to rocketmq but message tags changed finally?

I tried to send batch messages to topic with this method below: public SendResult send(Collection msgs, MessageQueue messageQueue) throws MQClientException, RemotingException, MQBrokerException, InterruptedException { return…
John_Lin
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is it possible to get the group name from registerMessageListener in RocketMQ

I am using RocketMQ as the message center, this is the consumer dependencies jar: org.apache.rocketmq rocketmq-client 4.9.1 …
Dolphin
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RocketMq:how can get RocketMQ topic and tags using Api

How can I get all the tags in the topic of RocketMQ
masi al
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rocketMQTemplate.asyncSend throws ConcurrentModificationException at MessageDecoder.messageProperties2String

I am using rocketmq-spring to send message which version is 2.1.0, sometimes i got ConcurrentModificationException at org.apache.rocketmq.common.message.MessageDecoder.messageProperties2String(MessageDecoder.java:414),the following is a detailed…
dujingsong
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how to sync two rocketmq cluster which are in different networks

I got rocketmq clusters named A and B, they are in network net-A and net-B separately. How could I sync their topics and messages.
Adampan
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How to config rocketmq in spring-cloud-stream 3.2.2？

The documentation on spring.io only have kafka and rabbitMQ, The demo on github(spring-cloud-alibaba-example) only have old version, How to config rocketMQ in spring-cloud-stream-3.2.2 or spring-cloud-alibaba-2021.0.1.0?
August
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How to delete the deley messages that has not been consumed?

I want to delete the sent deley message or modify the sent deley message expiration time.
zoho Yang
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