The message-queue tag has no wiki summary.
1
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1answer
18 views
Sequencing distributed tasks with a distributed DB
Background
I have two separate processes, WriteIt() and ReadIt(). One creates records, and the other processes the records in a DB cluster.
Once WriteIt() creates a record, it queues a ReadIt() ...
-2
votes
0answers
55 views
using ejabberd instead of rabbitmq for pushing notifications to the web client [on hold]
I am building a complex system that needs to push notifications to the web client and also important is to push to mobile clients ios and android.
I have built the system with rabbitmq + socksjs + ...
0
votes
2answers
112 views
storm topology to handle “dating website”-like workloads
suppose im writing a dating website, similar to okcupid. there are profiles, and i need to compute the (N^2) "match" table - given every 2 profiles whats the match between them?
i was thinking this ...
1
vote
1answer
47 views
Options for repeated distributed task
Scenario
My project has a need to periodically scan the database and notify administrators for particular issues. For example:
Any errors in the logs since last update?
Do values match expected ...
1
vote
3answers
68 views
Using message queue systems - forcing synchronous processing
I have a php process producer-a which places a job on RabbitMQ a - deferring processing to a third-party service. The 3rd party service completes processing a and places a response onto queue b. I ...
0
votes
1answer
91 views
Is having a bi directional message queue a design smell?
I have an architecture with 1 backend server and multiple frontend servers.
The frontend servers are connected in a bi-directional (web sockets) connection to clients so they can send messages to ...
1
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0answers
37 views
Persist data downloaded by Celery workers
I'm working in a tool that downloads tweets from Twitter to process them later. For this purpose I'm using Celery with RabbitMQ, sending task with the keywords that must be tracked by the workers.
My ...
1
vote
0answers
38 views
Improve communication between controller and trackers in a Twitter fetcher tool using RabbitMQ or Apache Flume
I've been working for a time with some researches developing a tool to fetch tweets from Twitter and process them in some way. The first prototype "worked" but became a pain as we used sockets to ...
2
votes
3answers
151 views
Design a Queuing Solution with Clustering and Multiple Consumers
It is a Design Problem which I am listing out here.
I have different set of business operations that are carried out for different business entities.
Operations:
Operation A
Operation B
Operation ...
0
votes
1answer
83 views
More than 20 Records Inserted in a Span of 1 Sec
Well, this is not specific to any programming languages. I came across this situation in Android, iOS, PHP and .NET.
The problem is many times I come across a situation while building IoT apps, where ...
0
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0answers
92 views
When to use a message queue as a web service database?
Does it make sense to implement a message queue system such as RabbitMQ or Kafka for the purpose of storing data in a queue? For example, this could be done in order to handle things such as ...
0
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0answers
21 views
Logging and analytics from multiople processes
I am setting up a system on OpenStack comprising of several independently running processes and need a logging and analytics process running which will receive very frequent input from the running ...
0
votes
1answer
57 views
Should I have a queue with SMS requests to picked up by a separate process or connect directly to the API?
I created an email queue where I put the requests for emails to be sent. If the SMTP server is unavailable, the requests are not lost.
When the SMTP server gets back online, the background service ...
1
vote
3answers
837 views
UML: Queue processor in a sequence diagram
Which is the appropriate way of representing a queue processor in a UML sequence diagram?
I want to represent in the same diagram two systems that are loosely coupled through a queue. The first ...
2
votes
0answers
41 views
How to use Messagequeing in a distributed web application
I am curious for solutions to this problem:
Assume we are going to build an online-store. To better scale parts of the architecture, it is broken into independend subsystems. The typical scenario ...
2
votes
1answer
147 views
Passing notifications between programs written in different programming languages
I work in a team of people with experience in varied programming languages. Recently we were required to build a report when an order is placed in our system. Our ecommerce store runs on PHP and the ...
0
votes
1answer
97 views
Locking database records
What I have right now:
A table with lot of records.
About 200 users can select a record according to some rules based on the data in each record.
There is a high chance that 2 or more users will ...
0
votes
0answers
92 views
Message Queue: Which one is the best scenario?
I write a web crawler.
The crawler has 2 steps:
get a html page
then parse the page
I want to use message queue to improve performance and throughput.
I think 2 scenarios:
scenario 1:
...
4
votes
1answer
79 views
How to Recover from Inconsistent Job State without Database Polling
I'm working on scaling an application which is currently polling a mySQL database to send async jobs to a background processing system.
A state machine is being used to keep track of the entities ...
9
votes
1answer
2k views
Why database as queue so bad? [closed]
I've just read this article, and I'm confused.
Let's imagine 1 webapp and 1 distinct application acting as "worker", both sharing the same database.
Oh, I said "sharing"..but what does the article ...
1
vote
1answer
79 views
Estimating time remaining in a queue with multiple workers
I've been trying to figure out a way of calculating the estimated time remaining for an item in a queue when there are multiple workers processing items from the single queue.
A client submits a job ...
2
votes
0answers
137 views
How to schedule large numbers of user-defined tasks?
Say you're running a website which generates a large number of tasks that should be run at particular times (e.g. reminder emails).
You could run a cron which SELECTs a database table for unprocessed ...
4
votes
2answers
876 views
Where does Windows Workflow Foundation fit into the messaging oriented middleware architecture?
I've been trying to find information online about where WWF 4.5 fits with in an architecture based around an enterprise message queue using central broker(s) (RabbitMQ in particular).
It seems like ...
2
votes
1answer
1k views
Best way to notify the client in real time that their queue (e.g. SQS) job has finished?
Current Scenario
Our application allows users to upload (Amazon S3) and manage their files through our interface. Currently those users can download the files directly from S3/Cloudfront through our ...
3
votes
1answer
314 views
When does one NOT need to use queues in an application?
I've been developing an application using the Laravel Framework & have been exposed to the idea of queues for the first time. There are a multitude of tutorials & articles about using queues ...
3
votes
1answer
560 views
Is ZeroMQ a good choice to make a Python app and a C# managed assembly work together?
I have a task that involves talking to a .NET-based API (namely AutoCAD) to retrieve data, send commands, and react to events.
I want to separate the API operations and the proper program logic ...
3
votes
2answers
3k views
REST or a message queue in a multi-tier heterogeneous system?
I'm designing a REST API for a three-tier system like: Client application -> Front-end API cloud server -> user's home API server (Home).
Home is a home device, and is supposed to maintain connection ...
1
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0answers
325 views
Apply filter in Kafka Queue
Is it possible to apply a filter on the Kafka stream of topic?
What I want to do is filter out messages while consuming and then run some custom logic on top of it. It is a sort of thing that Storm ...
1
vote
2answers
586 views
Kafka, is it possible to get the message offset after producing?
While using Apache Kafka, is it possible to get the offset of the message that has been produced?
From the Kafka documentation page it says:
each message in the partition are assigned a unique ...
1
vote
2answers
328 views
Access JSON object in different Languages
I have a Java code which is writing some data in string format to Messaging queue. Now any one can subscribe to this queue and fetch this data. Here the client fetching this data can be written in any ...
-1
votes
1answer
142 views
Will a MQ topic persist messages when one of the consumers is down
If I have a websphere MQ topic and 3 listeners have subscribed to the Topic. One listener is down when a message comes in the Topic. Other listeners consume the message. When the listener comes back ...
0
votes
2answers
243 views
Create and delay task for 24 hours [closed]
I'm trying to come up with a sane architecture to delay a task for 24 hours. So far I've thought of:
unix cron job, but this will not be able to take the load we give it, since we will have many ...
18
votes
1answer
8k views
How to implement a message queue over Redis?
Why Redis for queuing?
I'm under the impression that Redis can make a good candidate for implementing a queueing system. Up until this point we've been using our MySQL database with polling, or ...
3
votes
1answer
457 views
Push-Based Events in a Services Oriented Architecture
I have come to a point, in building a services oriented architecture (on top of Thrift), that I need to expose events and allow listeners.
My initial thought was, "create an EventService" to handle ...
2
votes
1answer
104 views
Should I parse an email template before or after placing it in the queue?
I have a web application that sends out transactional (triggered) emails to users. We've setup a message queue for the web application to write to when it needs to send out an email (best practices ...
8
votes
1answer
3k views
Designing an scalable message queue architecture
I have recently started learning the nuances of scalable and enterprise computer architecture, and one of the central components is a messaging queue. In order to learn the most I can from any ...
4
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4answers
569 views
Architecting Python application consisting of many small scripts
I am building an application which, at the moment, consists of many small Python scripts.
Each Python script processes items from one Amazon SQS queue. Emails come into an initial queue and are ...
0
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0answers
710 views
MSMQ Receive Timeout Even With Items in Queue
Tried posting this on main StackOverflow site, but no replies in 5 days.
I am having ongoing problems trying to implement a very simple MSMQ solution:
2 PCs (not servers) running Win7 and Win8 ...
5
votes
3answers
2k views
NoSQL Document Database as a Message Queue
I am considering using a NoSQL Document database as a messaging queue.
Here is why:
I want a client to post a message (some serialized object) to the server and not have to wait for a synchronous ...
3
votes
2answers
844 views
How do I document a communication protocol on top of message queues and channels?
I'm working on a large project at the moment and I'm trying to document the communication protocol that sits on top of a message queue middleware.
The documentation is intended for another ...
0
votes
1answer
545 views
Scheduling Thousands of *Recurring* Jobs
I'm looking for general approaches and ideally libraries/tools for scheduling many thousands of recurring jobs.
A simple example is a feed aggregator, where I'd want to repeatedly poll thousands of ...
25
votes
2answers
14k views
When to use Advanced Message Queuing Protocol like RabbitMQ? [closed]
Can somebody explain me in what use-cases I should consider using AMQP like e.g. RabbitMQ? What are the pros and cons?
3
votes
1answer
324 views
How to get JMS to front end
I currently have a web application and I would like to add a messaging feature to it.
In order to do that, I use JMS(actually OpenMQ, the implementation provided with Glassfish 3).
The problem is that ...
2
votes
2answers
303 views
Write own messaging system vs. utilize existing ones
We are trying to have our own startup, with a middleware application to glue small applications with enterprise legacy systems.
for such middle-ware to function properly, we will need some sort of ...
3
votes
2answers
250 views
How to solve an event-queue problem in a computer emulator in Java
I'm writing a low-level emulator (in Java) of the IBM 1620, a late-50s computer. By "low level," I mean that the lowest observable unit of work is the 20-microsecond "trigger" -- machine instructions ...
0
votes
4answers
1k views
Online Poker Game Programming [closed]
I am trying to write a massive online multiplayer client for a poker site, where one user can be on a Flash client and the other on say an iOS client (iPhone / iPad), and would like to know how can ...
6
votes
2answers
495 views
Implementation of communication between packages (Java)
I'm making a project with 5 packages. The packages can communicate with each other by sending Messages to a central MessageQueue in the Main package and that MessageQueue takes care of all the ...
14
votes
1answer
4k views
What are the solutions to the Distributed Queue problem?
I am trying to learn more about the various ways that the problem of a Distributed Queue may be solved. So I would like know what products, services, implementations and research papers that are ...
8
votes
2answers
457 views
Product agnostic book on Message Queues? [closed]
Are there any recommendations for book(s) that are largely agnostic (with examples of MQ implementations is fine) on vendor but go to great details on the architecture, management, nomenclature, ...
