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Questions tagged [consumer]

649 questions
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React context consumer was rendered with multiple children error

I simply try to use react provider but somehow i get this error: index.js:1437 Warning: A context consumer was rendered with multiple children, or a child that isn't a function. A context consumer expects a single child that is a function. If you…
Tolima
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How to verify that Amazon Kinesis Python client is working

I'm trying to build an Amazon Kinesis Python consumer using the KCL library for Python (https://github.com/awslabs/amazon-kinesis-client-python). I started by checking the sample code. I was able to run both producer and consumer scripts parts of…
Carlos
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Consuming Spring Hateoas Pageable

I have a Rest-Service using HAteoas, what worked before without pageing. Now I am producing pageable Json. I did it with out-of-the box features from Spring-Hateoas. But now I am stucking consuming it and I guess it is really not well documented, if…
Michael Hegner
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Kafka Consumer in C++

I have been searching for C++ kafka consumer. I came across following which are for C++ kafka but there is no consumer. https://github.com/adobe-research/libkafka (Only sample…
user3619015
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4 answers

Producer/consumer system using database (MySql), is this feasible?

I need to use something to coordinate my system with several consumers/producers each running on different machines with different operating systems. I have been researching on using MySql to do this, but it seems ridiculously difficult. My…
johnrl
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XUnit unit tests for MassTransit consumer

I am using MassTransit 5.5.5 version and xunit 2.4.1 My consumer looks like this public class StorageInformationConsumer : IConsumer { private readonly IBus _serviceBus; private readonly…
user1532976
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Using Lambda functions to Consume all objects provided by a Supplier

Looking for how to use Java lambda functions so Consumer can process all objects provided by a Supplier, and get rid of the explicit while loop and null checks. I have a Supplier of String keys for a database and I want to use a Consumer to process…
ScottK
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RabbitMQ - Consume multiple queues by priority

I have a requirement to upgrade our Producer/Consumer infrastructure. The current setup look like this: Set of 3 queues with different priority (low, med, high). When one our customers generate a task (i.e Process an image): The Producer add the…
eldad87
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Kafka High Level Consumer Fetch All Messages From Topic Using Java API (Equivalent to --from-beginning)

I am testing the Kafka High Level Consumer using the ConsumerGroupExample code from the Kafka site. I would like to retrieve all the existing messages on the topic called "test" that I have in the Kafka server config. Looking at other blogs,…
user3307283
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RabbitMQ consumer on demand?

I want a consumer to perform some actions every time that a message is received. Must the consumer be running 24/7 "listening" to the queue or it can be run only when an appropiate message is received?
vicmarq
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BlockingCollection multiple consumer

I have the following code with one producer thread and multiple consumer threads. Do you know if multiple consumers are thread safe. For example is there any chance that thread 1 is consuming and while do that thread 2 consume in parallel and change…
pantonis
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Solution to slow consumer(eventProcessor) issue in LMAX Disruptor pattern

While using the disruptor, there may be a consumer(s) that is lagging behind, and because of that slow consumer, the whole application is affected. Keeping in mind that every producer(Publisher) and consumer(EventProcessor) is running on a single…
Syed Waqas
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Camel file consumer template - threads remaining alive

I have a problem very similar to http://camel.465427.n5.nabble.com/FTP-ConsumerTemplate-Threads-remaining-alive-td5548338.html. How do you kill Camel locked threads on different endpoints? I tried to remove endpoints and stop ConsumerTemplate after…
Baranowski Witek
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RabbitMQ Consume Messages in Batches and Ack them all at once

I have a RabbitMQ queue in which I post thousands of messages. I need a background Service that will: Retrieve the messages in batches of 100 messages Store those 100 messages in a Database Ack all 100 messages at once Proceed with the next batch…
Katia S.
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Order guarantees using streams and reducing chain of consumers

So as it goes in the current scenario, we have a set of APIs as listed below: Consumer start(); Consumer performDailyAggregates(); Consumer performLastNDaysAggregates(); Consumer repopulateScores(); Consumer updateDataStore(); Over…
Naman
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