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Questions tagged [event-driven-design]

Event Driven Design is the implementation of requirements through a queue of events that are triggered by user input. Callback functions only create event objects and add them to the queue so state remains unchanged.

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How front-end works with Event Driver Architecture

I'm more experienced in the backend layer, lately I'm studying micro-services and Event Driver Architecture, I've done some searches on WEB, but don't found out how this exactly works on the front-end layer, for example, let's assume that you make a…
eduardovendruscolo
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EDA with EventSourcing order of events guarantee with Kafka

Let's say I have an Order and a Product. Whenever product is created I publish PRODUCT_CREATE event and for the order it is ORDER_CREATE If I use Kafka ( or any message broker ) should I have 1 queue per microservice and process events one-by-one or…
0xDjole
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Architecture Recommendations For Re-Using Consumers In Different Pipelines

We have an application that handles various pipelines modeling real-world workflows, each pipeline being composed of multiple different consumers. For example, in Pipeline 1, we might have Consumer A -> Topic 1 -> Consumer B -> Topic 2 -> Consumer…
michjo
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How to handle time-related events in Event Driven Architecture?

I have a distributed platform which allows customers to make purchases, and the items which are purchased are stored in an inventory: Sales app -> PurchaseEvent -> Inventory app The Sales app raises the PurchaseEvent onto a message bus, which is…
FBryant87
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How to "replay" past integration events to replicate current state in a new context

I'm quite new to DDD and Event Driven architectures. And after searching this issue I did not manage to get a clear answer by myself, so I'll appreciate if someone can clarify this. Suppose I currently have an app with 2 bounded contexts. ContextA…
Guille López
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A serverless solution to run a Kafka consumer/producer in node?

I'm having a hard time figuring out a serverless runtime for my Kafka consumers to process my events, and I want my producer to be a constant listener to pick up and ingest events into corresponding topics. I'm using Upstash Kafka (serverless), but…
Pequod
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Dynamically add masstransit bus instance on event

I was trying to configure a microservice that would be able to listen a 'NewTenant' event On creation of the tenant a new vhost in rabbitmq is activated and the event is published on the main servicebus. But when trying to add a new bus instance for…
sjkaspar
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Full Event driven design API

I've started to implement Kafka in spring boot + websocket , and i wonder if thats a great idea to make a full API in event driven this way . The main idea is to push the action to kafka and make listener dispatch event to the right channel on my…
kevP-Sirius
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Update subcribed AWS SQS Queue subscription without losing any messages from SNS Topic

I have an SQS Queue that is subscribed to an SNS Topic and everythning is working as expected. Since I am using Cloudformation for infrastructure provisioning, a few years ago, AWS didn't support RawMessageDelivery via cloudformation, therefore, I…
ihaider
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Consuming messages in a Kafka topic ASAP

Imagine a scenario in which a producer is producing 100 messages per second, and we're working on a system that consuming messages ASAP matters a lot, even 5 seconds delay might result in a decision not to take care of that message anymore. also,…
behz4d
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Zephyr Project Event Handling

I am working on an event driven portion of a project utilizing the use of the Zephyr Project. I am relatively new to Zephyr so I apologize if I am going about this wrong. My goal is to have a forever thread responsible for determining if any events…
Daniel Velazquez
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A simple event driven batch processing

First of all, I wanted to gather some information one how a simple event driven architecture works in real life. If this question is not suitable in here. please kindly let me know where I can ask these kind of questions. Here is my usecase: My…
KKK
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How to do versioning of Custom Serdes objects in Kafka Stream while using processor API during Rolling Upgrade

How to achieve handling multiple versions of UserDetailDto while processing it from Topic-A to Topic-B with Kafka stream using processor API. Existing instance/replica of aggregation service should not impacted and Kubernetes upgrade scenario should…
Vinay
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Architecting a user/seller model

I’ve been reading a lot about different architecture approaches to solve a problem I’ve been working on. I’ve read about polling, event driven, websockets The application I am designing allows users to send requests (ex: request to purchase) to…
Kirency
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Kafka client and aggregated events

In event-driven design we strive to find out events that we interested of. Using Kafka we can easily subscribe (a new group.id) to a topic and start consuming events. If retention policy is default one we could consume also one week old messages if…
zashto
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