What is Event-Driven Architecture?
Turkish: Event-Driven (Olay Tabanlı)
Event-driven architecture lets systems react through independent components when events such as orders, payments, or stock changes occur.
What is Event-Driven Architecture?
Event-driven architecture is a design style where systems publish events such as “order created”, “payment received”, or “stock decreased”, and other components react independently. Components do not need to call each other directly for every side effect.
How Does It Work?
The system that creates the event is often called the producer, and the system that reacts is the consumer. A message queue, event bus, streaming platform, or webhook may sit between them. The producer announces that something happened; consumers may send email, update stock, write reporting data, or notify a third-party service.
This model is asynchronous. Retries, idempotency, ordering guarantees, dead-letter queues, and observability must be designed early. Processing the same event twice can create serious problems in areas such as invoicing or inventory.
Relationship with Webhooks and Message Queues
A webhook is a practical event-driven mechanism that sends an HTTP request when something happens. A message queue stores events reliably so consumers can process, retry, and recover from failures.
Business Use
E-commerce order flows, post-payment invoicing, CRM notifications, warehouse integrations, IoT data, and SaaS notifications can benefit from event-driven design. A major advantage is that a new consumer can be added with limited change to the existing producer flow.
Related Terms
A cron job is a scheduled Unix/Linux task that runs backups, reports, synchronization, or maintenance at fixed times or intervals.
Event SourcingEvent sourcing stores application state as ordered, immutable records of changes rather than only keeping the latest value.
Message QueueA message queue buffers work between services so producers and consumers can run asynchronously and recover from traffic spikes.
Observer PatternThe Observer pattern automatically notifies all attached observers when an object's state changes — an event-driven design pattern.
Polling vs WebhooksPolling vs webhooks compares scheduled status checks with event-driven callbacks for keeping integrated systems synchronized.
Publish-Subscribe (Pub/Sub)Publish-subscribe is a messaging pattern where publishers send events to topics and subscribers receive matching messages.
TriggerA trigger starts a database action, integration step, or automation workflow when a specific event or condition occurs.
WebhookA webhook lets one system automatically send an HTTP request to another when an event occurs, so updates arrive without polling.