Which combination most reliably approximates 'exactly-once processing' end-to-end?

Problem Statement

Explanation

You still may receive duplicates, but if your consumer writes are transactional and idempotent, the final state reflects one logical application of each message. Use idempotency keys, upserts, or dedupe tables to enforce this.

Code Solution

SolutionRead Only

UPSERT into processed_keys(key); if conflict → skip side effects

Practice Sets

This question appears in the following practice sets:

Messaging & Event-Driven Architecture

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Which combination most reliably approximates 'exactly-once processing' end-to-end?

Problem Statement

Explanation

Code Solution

Practice Sets

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Master Interviews Anywhere, Anytime

Which combination most reliably approximates 'exactly-once processing' end-to-end?

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which statement best describes the Single Responsibility Principle?

Open–Closed Principle encourages what practice when adding features?

High-Level Design (HLD) typically focuses on which artifacts?

Which UML diagram best captures interactions over time between components?

Which pairing describes a healthy design goal?

More from System Design

Master Interviews
Anywhere, Anytime