Design a cross-region event processing platform

Q: Design a cross-region event processing platform

This question evaluates a candidate's expertise in distributed systems and event-driven architecture, covering competencies such as durable storage, partitioning and ordering guarantees, cross-region replication, delivery semantics, retries/backpressure, duplicate handling, and operational concerns like monitoring, replay, and dead-letter queues.

Q: How do I approach System Design interview questions?

System Design questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master system design interviews.

Question

Scenario

Design a cross-region event processing platform that ingests events from producers, stores them durably, and delivers them to multiple consumers for processing.

Requirements

Producers send events continuously from multiple regions.
Consumers (in one or more regions) subscribe to event streams and process events.
Must support:
- Durability (events should not be lost)
- Scalability (high throughput)
- Cross-region replication / disaster recovery
- Ordering guarantees (at least per key/partition)
- Retries and backpressure
- Handling duplicates (at-least-once is acceptable if dedup is possible)
Operational needs:
- Monitoring, replay, dead-letter queues, retention policies

Deliverables

Describe:

Public API for producing/consuming events
Storage/log architecture and partitioning
Cross-region replication strategy
Delivery semantics (at-most/at-least/exactly-once) and how you achieve them
Failure handling (region outage, consumer lag)

Design a cross-region event processing platform

Quick Overview

Scenario

Requirements

Deliverables

Solution

Comments (0)