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4
votes
1answer
45 views

Master-Slave Cluster - How to make sure the master is really dead for the slave to take over?

I have a in-house messaging system, similar to a message broker. We have one master message broker and one slave message broker. A message broker just receives messages and sends them to all nodes. ...
1
vote
1answer
48 views

Eventing solutions for java legacy applications too old for real JMS queue/topic eventing?

What are some architectural solutions that can mimic eventing for systems (Java) that are too old to implement eventing solutions, such as conventional Queue/Topic based JMS messaging? I have a ...
0
votes
1answer
25 views

Message queues: Cluster of “send mail” and analytics consumers, ensure dispatch to only one mail-consumer and only one analytics-consumer

It seems there's lots of ways to create a task queue where something like a round-robin algo rotate tasks between consumers, but say I have a user queue, and I want to both send a welcome mail and do ...
2
votes
0answers
445 views

Architecture design for Java servlet that triggers work (for sending push notifications)

I'm designing a push notification server (for pushing notification via APNS and Google servers) and have come up with the following design for a Java based web application server. I would really like ...
2
votes
0answers
240 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 ...
1
vote
0answers
12 views

Web API to Windows Service communication via ZeroMQ

I have an ASP.NET Web API 2 web service. This is the interface customers will use to submit data. I have a Windows Service running on an internal server. I will be sending the customer's POST data to ...
1
vote
0answers
72 views

Guaranteed message sending for messages of different priority for different modules

We have created a message que system using priority messages. The idea behind this is as follows: We have a list of clients. All clients know if (and what kind of priority) messages they have ...
1
vote
0answers
28 views

MVC WebApplication as MQ Subscriber

We have a Web (.Net MVC5) application that we are looking to start offloading some of the heavy processing off the Web Application to a distributed services layer. As part of this process we are ...
1
vote
0answers
64 views

Job queue dispatching based on resource constraints

We have a job-queue shaped hole in our architecture, but it isn't immediately obvious that there's a piece of existing software to fill it. There may be a reason for this, or there might not, so let ...
1
vote
0answers
78 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 ...
0
votes
0answers
49 views

Fault-tolerant, distributed, event dispatcher architecture?

I'm building an event handler/dispatcher for my monolith, aiming to slowly replace big parts of it by delegating jobs to other systems via events. For example, sending emails when a customer buys ...
0
votes
0answers
69 views

A layer of abstraction too far?

Using an enterprise service bus, a message translator pulls a message off the queue ready to be consumed by a service. The translator picks up the message in a canonical data model (CDM) form and ...
0
votes
0answers
173 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 ...