Prompt library

System Design Interview Diagram Prompts

Use these prompts when you want a fast first-pass system design diagram for interview prep. They are built around common interview systems so you can focus on tradeoffs, bottlenecks, and scaling decisions after the initial diagram appears.

Each prompt here is built for AI-native technical diagrams in AIDrawIO. Start from plain English, get draw.io-compatible output, then keep editing as XML or export SVG and PNG.

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Copyable prompt blocks

Grab a proven prompt quickly instead of composing from scratch every time.

Refinement-ready

Each prompt includes a follow-up so you can add boundaries, detail, and review context.

Editable outputs

Generated diagrams stay compatible with draw.io workflows instead of locking you into images.

Copy and generate

Copyable prompts for system design interview diagram prompts

Use one prompt as-is, or combine it with the follow-up prompt to add labels, constraints, security detail, or failure handling.

Prompt 1

Realtime chat system

Prompt

Create a system design diagram for a realtime chat application: mobile and web clients, API gateway, auth service, websocket gateway, chat service, message store, Redis presence cache, Kafka for fan-out events, notification worker, and push notification provider.

Why this prompt works

It captures realtime messaging, storage, caching, and fan-out, which are the main moving parts interviewers expect in a chat system discussion.

Follow-up prompt

Add offline delivery path, unread count service, and multi-region considerations.
Prompt 2

File storage and sharing

Prompt

Generate a system design diagram for a file storage and sharing service: web and mobile clients, upload API, metadata service, object storage, thumbnail worker, search index, permission service, CDN, and audit log pipeline.

Why this prompt works

It shows ingestion, storage, sharing, and background processing in one prompt, which creates a better interview draft than an API-only view.

Follow-up prompt

Annotate large file upload path, virus scanning step, and share-link permission checks.
Prompt 3

Ride matching platform

Prompt

Draw a system design diagram for a ride matching platform: rider app, driver app, API gateway, auth service, trip service, location service, matching service, pricing service, Redis, PostgreSQL, Kafka, and notification service.

Why this prompt works

It names the core low-latency services and event infrastructure needed in a typical marketplace-style interview system.

Follow-up prompt

Add surge pricing update flow, driver availability tracking, and failed match retry path.

How to use these prompts

From prompt to editable diagram

1

Pick a base prompt

Choose the closest prompt for your architecture, workflow, or schema.

2

Generate in AIDrawIO

Paste it into the app and create the first structured draft fast.

3

Refine with follow-up

Add more scope like failure paths, zones, labels, or compliance detail.

4

Export and share

Keep draw.io-compatible XML or export SVG and PNG for docs and review.

Related tools

Jump into a specialized generator when you know the exact diagram category.

System Architecture Diagram Generator

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Architecture Diagram Generator

AI architecture diagrams from plain English

Sequence Diagram Generator

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More prompt pages

Use adjacent prompt libraries when your diagram crosses categories.

AWS Architecture Diagram Prompts

These prompts help you generate AWS diagrams faster by naming the key services, traffic paths, and boundaries clearly. Start with one, then use follow-up prompts to add subnets, security controls, or scaling detail.

System Design Diagram Prompts

Use these prompts when you need a system design diagram quickly for interview prep, architecture reviews, or internal docs. Each one names the major components, scaling path, and data flow so the diagram is easy to inspect and refine.

Sequence Diagram Prompts

Sequence diagrams are easiest to generate when the prompt names actors, the order of requests, and any alternate or failure paths. These prompts give you a clean base for auth flows, API interactions, and service-to-service messaging.

ERD Prompts

ERD prompts work best when they name the entities, relationships, and key attributes or constraints. These examples help you generate a clean first-pass schema diagram before you finalize table details.

FAQ

Common questions about system design interview diagram prompts

Are AI prompts useful for system design interview practice?

Yes. They help you get an initial architecture on the page quickly so you can spend more time discussing tradeoffs, bottlenecks, and scaling strategies.

What should a system design interview diagram include?

It should include clients, core services, storage, caches, async systems, and the main request or event paths relevant to the problem.

Can I keep refining the interview diagram after generation?

Yes. AIDrawIO supports follow-up prompts and editable draw.io-compatible output for iteration.