Architecture Hubs

Deep dives into how real systems are built, grouped by topic. Every entry is generated from the actual source code — architecture diagrams, module maps, and execution flows.

• Coding Agents
  Architecture deep dives into AI coding agents — Claude Code, Codex, Cline, OpenCode. Agent loops, tool dispatch, context management and sandboxing, with diagrams and code walkthroughs.
• RAG Systems
  RAG architecture from real source code: hybrid BM25 + vector search in Langchain-Chatchat and Open WebUI, GraphRAG's knowledge graphs, and PageIndex's vectorless tree retrieval.
• LLM Frameworks & Apps
  Architecture deep dives into LLM frameworks and apps — DSPy, Langchain-Chatchat, Open WebUI, NextChat, PageIndex. RAG pipelines, orchestration layers and chat UIs, mapped from source.
• Security Tools
  Architecture deep dives into open-source security tools: Wireshark, Nmap, mitmproxy, OpenSSH, BlackArch. Packet dissectors, scan engines, interception proxies and privilege separation, mapped from source.
• Self-Hosted Apps
  Architecture deep dives into popular self-hosted apps: Immich, Jellyfin, Vaultwarden, Uptime Kuma, Cal.com, Chatwoot and more. Background jobs, storage layers and single-container deployment, mapped from source.
• Networking & Infrastructure
  Architecture deep dives into the software the internet runs on: nginx, Caddy, curl, BIND9, Unbound, Mosquitto and libtorrent. Event loops, protocol state machines and caching, mapped from source.

Or browse the full project analysis gallery.