repoll | Redis管理平台Repoll,现已开源,基于redis3.x,支持单机、哨兵以及集群模式 | Blog library
kandi X-RAY | repoll Summary
kandi X-RAY | repoll Summary
repoll
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Redis text handler
- Get the server user password
- Execute SCP
- Create the cluster configuration file
- Get redis connection
- Get redis status
- Monitor the redis cluster not alive
- Monitor the redis cluster
- Approve selected assets
- Update apply status
- Creates a new Asset
- Create a new User instance
- Return the usage of redis connections
- Return the configuration for the given type
- Returns the number of connected clients
- Deny approve new assets
- Denis a new asset create
- Manage memory usage
- Set a configuration value
- Watch for redis
- Stop the Redis service
- Check the redis cluster port
- Start a redis service
- Import Redis
- Returns a standalone redis configuration
repoll Key Features
repoll Examples and Code Snippets
Community Discussions
Trending Discussions on repoll
QUESTION
Kafka messages that has been posted by the producer are keep appearing the consumer end after a specific interval
I tried to consume a message from my Kafka topic, That Time I face the issue I explained above. I suppose, it happens due to repolling after 5 mins(Which is a default poll interval) set. Is my understanding correct?
My Expected result is the message should not be reprocessed again and again. It should be processed only once. How Can I achieve that?
...ANSWER
Answered 2019-Apr-18 at 07:03Your configuration seems to be enable.auto.commit: false and auto.commit.interval.ms: some value
Second configuration is causing messages appearing after some specific interval(some value). Same message is appearing at consumer end for processing because the message was not processed successfully first time. If no last offset information available with zookeeper or broker, and auto.offset.reset is set to smallest (or earliest) then processing will start from 0th offset. Change auto.offset.reset to largest (or latest) if you do not want to reprocess the same message.
QUESTION
I am trying to achieve exactly once delivery using spring-cloud-stream-binder-kafka in a spring boot application. The versions I am using are:
- spring-cloud-stream-binder-kafka-core-1.2.1.RELEASE
- spring-cloud-stream-binder-kafka-1.2.1.RELEASE
- spring-cloud-stream-codec-1.2.2.RELEASE spring-kafka-1.1.6.RELEASE
- spring-integration-kafka-2.1.0.RELEASE
- spring-integration-core-4.3.10.RELEASE
- zookeeper-3.4.8
- Kafka version : 0.10.1.1
This is my configuration (cloud-config):
...ANSWER
Answered 2018-Jul-05 at 13:51As explained by Marius, Kafka only maintains an offset in the log. If you process the next message, and update the offset; the failed message is lost.
You can send the failed message to a dead-letter topic (set enableDlq
to true).
Recent versions of Spring Kafka (2.1.x) have special error handlers ContainerStoppingErrorHandler
which stops the container when an exception occurs and SeekToCurrentErrorHandler
which will cause the failed message to be redelivered.
QUESTION
I've looked up throught a lot of different articles about Apache Kafka transactions, recovery and exactly-once new features. Still don't understand an issue with consumer recovery. How to be sure that every message from queue will be processed even if one of consumers dies?
Let's say we have a topic partition assigned to consumer. Consumer polls a message and started to work on it. And shutted down due to power failure without commit. What will happens? Will any other consumer from the same group repoll this message?
...ANSWER
Answered 2018-Apr-19 at 08:44Consumers periodically send heartbeats, telling the broker that they are alive. If broker does not receive heartbeats from the consumer, it considers the consumer dead and reassigns its partitions. So, if consumer dies, its partitions will be assigned to another consumer from the group and uncommitted messages will be sent to the newly assigned consumer.
QUESTION
In my application we use to receive 60000 messages every day. It is using 11 MDB and MessageListener to subscribe the messages from different OMB queues and process it. Using weblogic server and JAP. We have total 32 instance for each MDB, because we have 8 different node each node's max-beans-in-free-pool is 4.
Current Problem :When DB down, catch it in exception and rollback the transaction context so message will put back to queue. We checking if JMSXDeliveryCount is less then 100 it will retry else it will drop the message and send the email with message reference.
Problem : Message is getting lose, 100 time retry reach with in few secs. but DB may up after 2 hours.
Proposed approach :Check database connectivity prior to processing a message, if DB connectivity isssue – sleep the thread for 5mins after repoll to check the connection. In this case each MDB can hold 32 message (Tread) in application level remaining message will be in queue. We have 11 MDB so possible of (11*32) thread will be sleep in application level.
I felt its bad to check DB connection for all message at initial level and holding 352 message (controlling 352 thread, possible of weblogic crash) in application level till DB up.
Any better approach to handle this issue in MDB level or weblogic level ?
...ANSWER
Answered 2017-Mar-07 at 00:19I am not familiar with Web Logic but responding with my knowledge on IBM MQ.
Have you looked at setting up Redelivery Limit
and Error Destination
properties for the queue from where your application is receiving messages? If the JMSXDeliveryCount
property of a message exceeds Redelivery Limit
, then that message will be routed to Error Destination
, basically a queue or a topic. You could also setting up Redelivery Delay Override
property for messages.
You can write separate logic for moving messages from Error Destination
to the queue from which your application receives messages. This way messages are not lost.
More details here.
Hope this helped.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install repoll
You can use repoll like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page