Design a Image Processing for Instacart
Last updated: July 8, 2025
Quick Overview
Design a event-driven image processing system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
Instacart
July 8, 202517
4
2,113 solved
Design a event-driven image processing system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
Software engineering fundamentals questions at Instacart test your understanding of core CS concepts and their practical application. This System Design Round question evaluates how you apply engineering principles to build maintainable, scalable software.
What the Interviewer Expects
- Apply engineering principles to a realistic design scenario
- Discuss trade-offs between different approaches with concrete examples
- Demonstrate understanding of testability, maintainability, and extensibility
- Connect theoretical concepts to production engineering practices
- Discuss how the approach scales with team and codebase size
Key Topics to Cover
How to Approach This
- Apply SOLID principles. Single Responsibility makes code testable, Open/Closed makes it extensible.
- Choose data structures based on access patterns, not familiarity.
- Prefer immutable data and message passing over shared mutable state for concurrency.
- Design APIs with RESTful conventions, versioning, meaningful errors, and pagination from day one.
Possible Follow-up Questions
- What testing strategy would you use for this component?
- How would you measure the performance of this component in production?
- How would you handle backward compatibility?
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Core Design Principles
In designing an event-driven image processing system for Instacart, the following core design principles apply:
- Single Responsibility Principle (SRP): Each component in the system should have ...
Architecture
The architecture for the image processing system at Instacart can be defined as follows:
- Microservices: We will use a microservices architecture, consisting of separate services for uploading ...
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