Chatroom Application: Real-Time Messaging with FastAPI & WebSockets
Real-Time Messaging with FastAPI & WebSockets
¶ 01Context & Design Rationale
“A reliable system is designed not around hypothetical optimal conditions, but around deterministic resilience under resource pressure.”
Chat application with persistent history, bot commands, and an advanced multimedia pipeline. Messages are stored in SQLite and auto-restored on reconnect. Uploaded images are converted to WebP with live PSNR quality stats. Audio files are compressed via FFmpeg to AAC 64kbps and analysed across frequency bands — reporting compression ratio, spectral correlation, and bitrate metadata side-by-side with the original. Engineered with strict architectural boundaries, deterministic memory models, and zero extraneous runtime dependencies.
¶ 02Architectural Pipeline
SUBSYSTEM RUNTIMEINGESTION PHASE
Protocol Parser
Zero-Copy Frame
→
TRANSFORMATION
Core Logic Unit
Deterministic Arena
→
PERSISTENCE
Storage / State Layer
Atomic Append