event-driven-design Questions
4
Solved
I am planning on working on a game that has a PHP back-end to communicate with the data repository. I was thinking about it and concluded that the best design paradigm to follow for our game would ...
Act asked 27/7, 2011 at 14:30
11
Solved
What is the difference between commands and events in architectures that emphasize events? The only distinction I can see is that commands are usually sourced/invoked by actors outside the system, ...
Maddie asked 10/2, 2011 at 21:13
3
Solved
I studied interrupts vs cyclical polling and learnt the advantages of interrupts that don't have to wait for a poll. Polling seemed to me just like event-driven programming or at least similar to a...
Earing asked 26/11, 2012 at 2:32
5
Solved
The actor based paradigm is pretty cool. Its ability to scale effectively makes it a paradigm to must-evaluate for any concurrent system. I have done some reading about it, and have a decent idea a...
Radiotherapy asked 26/11, 2012 at 2:13
1
Problem
I want to understand how I need to design the message passing for microservices to be still
elastic and scalable.
Goal
Microservices allow an elastic number of instances which are scaled u...
Prestige asked 18/5, 2021 at 8:35
4
Solved
Imagine a device full of sensors. Now, in case a sensor x detects something, something should happen. Meanwhile, in case something else is detected, like two sensors detects two different things, t...
Gouda asked 26/1, 2013 at 13:14
1
Basic pubsub architecture question. At a high level, when designing pubsub, I sometimes face a choice between two architectures:
Publish mutations or "new-state".
Some DB state is mutat...
Tiresome asked 8/8, 2020 at 23:30
1
I struggling to understand how I can design a backend that is event driven using event sourcing that can support synchronous requests. From what I understand, to take advantage of event sourcing, y...
Syllogism asked 30/10, 2019 at 11:33
1
Solved
I'm designing an Event-Driven system to be built by at least two teams with two different outsourcing companies.
We have designed everything internally, but now I'm creating the documentation for...
Jennefer asked 8/6, 2018 at 12:6
1
Solved
Our team is starting to implement event driven designs. We are now figuring what's the best tool/s and practices for documenting the schema of these events.
What are the common tools used for this...
Elba asked 11/2, 2019 at 20:27
2
Solved
Regarding the example in wikipedia:
http://en.wikipedia.org/wiki/Coroutine
var q := new queue
coroutine produce
loop
while q is not full
create some new items
add the items to q
yield to con...
Theodoretheodoric asked 13/2, 2011 at 10:4
3
Solved
I am in the process of moving an application from c# to node.js. I am a node.js newbie, coming from a .net background. I am looking to incorporate domain driven design patterns into the app. develo...
Switcheroo asked 28/12, 2016 at 17:33
1
Solved
Let's suppose a simplified scenario like this:
There are two Kafka topics, users and orders and three microservices user-service, order-service and shipping-service.
When an order is placed throu...
Midpoint asked 29/3, 2019 at 22:54
2
Solved
I'm considering a few frameworks/programming methods for our new backend project. It regards a BackendForFrontend implementation, which aggregates downstream services. For simplicity, these are the...
Nobell asked 3/4, 2018 at 14:43
1
Solved
Q1
I know the fundamental different between event based vs request based/driven architecture. Question is if the Request-based always done in synchronously while the Event-based is always done in ...
Mazurek asked 25/2, 2019 at 21:53
2
Solved
I was reading this article called Variations in event-driven architecture in which they demonstrate both the mediator and broker topologies.
According to the article the mediator topology looks so...
Purvey asked 14/10, 2017 at 8:0
1
Solved
I'm trying to understand how exceptions are handled in an event driven world using micro-services (using apache kafka). For example, if you take the following order scenario whereby the following a...
Acephalous asked 21/4, 2018 at 12:1
2
Solved
We have 7 microservices communicated via eventbus.
We have a real-time transaction sequence:
Service 1->service2->service3 (and so on.) Until transactions considered as completed
We must make sur...
Libretto asked 22/12, 2017 at 9:17
2
Here is the nice article which describes what is ES and how to deal with it.
Everything is fine there, but one image is bothering me. Here it is
I understand that in distributed event-based sy...
Endophyte asked 15/11, 2016 at 11:26
1
Solved
I am trying to learn some basics of event driven programming. So for an exercise I am trying to write a program that reads a large binary file and does something with it but without ever making a b...
Unmanned asked 21/3, 2016 at 20:57
1
Solved
Scenario :
We were evaluating ZeroMQ (specifically jeroMq) for an event driven mechanism.
The application is distributed where multiple services (both publishers and subscribers are services) ca...
Peppergrass asked 17/2, 2016 at 10:18
3
The question assumes the use of Event Sourcing.
When rebuilding current state by replaying events, event handlers should be idempotent. For example, when a user successfully updates their username...
Sclaff asked 13/12, 2015 at 11:11
1
Solved
At the Moment we design and plan to transform our system to a microservice architecture pattern.
To loose coupling we think about an event driven design with an JMS Topic. This looks great. But i...
Dentelle asked 21/4, 2015 at 14:49
1
Solved
TL;DR
On contract subscription, how can I get the raw message content or the original published object, rather than a dynamic proxy?
I am having a bad time trying to create a modular applicati...
Lucie asked 20/8, 2014 at 11:36
3
Solved
We're going to start a new Spring 4 application in a few weeks. And we'd like to use some event-driven architecture. This year I read here and there about "Reactor" and while looking for it on the ...
Assassinate asked 18/12, 2013 at 16:56
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