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Designing a Multi-Tenant WebSocket Service: Lessons from Building ApinatorUnderstanding the Transformer Architecture: Attention for Parallel Processing and Long-Range DependenciesTeam Topologies for AI Systems: Building Organizational Structures for Agentic AIEssential Building Blocks for Scalable System ArchitectureEnhancing MongoDB Development with AI Agent Skills and PluginsDocumentDB High Availability on Kubernetes with an Operator
Erik SvenssonSeulgi KimArjun KumarWei Han Tan4.4K+Architects300+Designs587K+Upvotes49K+Comments

SysDesAi

Software Architecture & System Design Platform

Describe any system. Your AI architect walks you through the full design step by step, for real projects or interview prep.

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Secure AI Agent Platform

Design a secure AI agent platform that allows developers to deploy multiple AI agents, ensuring each agent operates in an isolated environment with strictly defined resource access. The platform should support integration with external communication services (e.g., Slack, email) via official APIs and incorporate a mechanism for logging and monitoring agent activities and resource usage.

AI & MLAPI Platform
Inspired by The New Stack
SysDesAiSysDesAi
4749964

LLM Chatbot Testing and Evaluation Framework

Design a robust, scalable testing and evaluation framework for an enterprise-grade LLM-powered customer support chatbot, incorporating an LLM-based customer simulator, mocked backend services, and an automated evaluation system to detect issues like hallucinations and policy non-compliance at scale.

AI & ML
Inspired by InfoQ Architecture
SysDesAiSysDesAi
3208607

Real-time Financial Transaction Microservice

Design a high-performance, low-latency microservice that processes real-time financial transactions, focusing on how the choice and optimization of a memory allocator like jemalloc would influence its resource footprint, throughput, and responsiveness.

Other
Inspired by Meta Engineering
SysDesAiSysDesAi
2376608

Big Data Platform

Design a scalable big data platform to ingest, store, and process 10 TB of daily operational logs and event data, leveraging a Hadoop-based architecture for distributed storage (HDFS), resource management (YARN), and batch processing (MapReduce/Spark). Detail the components for continuous data ingestion, fault tolerance, schema evolution, and how real-time analytical capabilities could be integrated without overhauling the batch core.

AnalyticsStorage & CDN
Inspired by Dev.to #architecture
SysDesAiSysDesAi
2037417

Community

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Erik SvenssonSeulgi KimArjun KumarWei Han TanChen LeeChigozie OkoroDilnara KarimovaSofía Hernández
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what's your go-to for distributed tracing
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database row locking versus multiversion concurrency control
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rate limiting strategies: token bucket versus leaky bucket
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Software Architecture & System Design, All in One Place

AI architect for step-by-step system design. FAANG-style video interviews with whiteboard. Real architecture walkthroughs from the community. Curated news from 30+ engineering blogs. Interactive course with certificate. And a growing community of architects to learn with.

AI Video Interview

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Practice system design in a FAANG-style AI video interview. Talk naturally with an AI interviewer, sketch architecture diagrams on a live whiteboard, and get scored across 6 categories — just like a real interview.

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Design Gallery

301+ designs

Browse 301+ community-contributed software architecture walkthroughs. Each design shows the complete step-by-step breakdown with diagrams, data models, and sequence flows. Explore any design, ask questions via AI chat, fork it, and customize for your needs.

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Architect Community

Join a community of software architects. Start discussions on system design topics, build your architect profile with reputation and badges, follow other architects, and climb the leaderboard.

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Software Architecture Academy

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Complete software architecture and system design course — 131 interactive lessons covering scalability, distributed systems, databases, caching, architectural patterns, and interview strategy. Ask questions via AI chat in every lesson, take knowledge tests, and earn a completion certificate.

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  • Certificate awarded after passing all tests
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Software Architecture & System Design News

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Latest curated articles from top engineering blogs — Netflix, Uber, Cloudflare, AWS, and 30+ more. Rich summaries focused on architecture decisions and trade-offs.

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