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1
vote
1answer
164 views

Good pattern(s) for pointing to mutable state

I asked this question once here, but believe the question was unclear. However I'm having a hard time extracting the general problem from my specific case. UPDATE: I've answered my own question ...
0
votes
0answers
63 views

Looking for design pattern to represent shared state in music sequencer

I like to give lots of context, but also to state the basic question up top as concisely as possible. Feel free to read a little or a lot. I'm working on a music sequencer, and have been happy so far ...
4
votes
2answers
219 views

How is the publish-subscribe pattern different from gotos?

My understanding is that Goto statements are generally frowned up. But the publish-subscribe pattern seems to be conceptually similar in that when a piece of code publishes a message, it performs a ...
2
votes
1answer
381 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 ...
4
votes
1answer
191 views

Diagramming messages on a service bus

I'm looking for a way to clearly diagram how multiple applications communicate via a service bus. The best I've come up with so far is a sequence diagram, but I really don't like that. Sequence ...
14
votes
1answer
5k 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 ...
0
votes
2answers
735 views

Is this RabbitMQ / sockjs pub/sub connection setup a comet solution?

My company is attempting to set up a pub/sub connection using RabbitMQ and sockjs, on Windows servers. I have two questions: My supervisor is calling this setup a comet solution, I was wondering if ...
5
votes
3answers
575 views

Design Patterns for Coordinating Change Event Listeners

I've been working with the Observer pattern in JavaScript using various popular libraries for a number of years (YUI & jQuery). It's often that I need to observe a set of property value changes ...
5
votes
2answers
1k views

Simple, permanent queue system with pub/sub for Node.js?

Highly related Nodejs: many clients requests through one socket I'm investigating a robust message passing system for this application of mine. The easyest solution would be Redis pub/sub (it's ...
3
votes
3answers
267 views

What scenarios are implementations of Object Management Group (OMG) Data Distribution Service best suited for?

I've always been a big fan of asynchronous messaging and pub/sub implementations, but coming from a Java background, I'm most familiar with using JMS based messaging systems, such as JBoss MQ, ...