Private project case study
Cloud Music Streaming Platform
A microservices design separating playback, recommendations, and playlists, with cached metadata and object-storage-backed media delivery.
AWS · Docker · Redis · Python
- Playback / recommendations / playlists
- Simulated evaluation

01 / Problem
The constraint
Separate services with different workloads while keeping media delivery fast and recommendation evaluation meaningful.
02 / Structure
Architecture at a glance
- API Gateway + Docker services
- Redis metadata / recommendation service
- S3 media + CloudFront delivery
03 / Implementation
Engineering decisions
- Playback, recommendation, and playlist concerns have independent service boundaries.
- Item-based collaborative filtering is evaluated against a popularity baseline on simulated interaction data.
- Media is stored in S3 and delivered through CloudFront; Redis caches frequently requested metadata.
04 / Evidence
Measurement context
Architecture and evaluation details are author-supplied project notes; public source and reproducible benchmark artifacts have not been provided. The notes report 10,000+ simulated interaction events, a 25% relevance improvement over a popularity baseline, and sub-200 ms average delivery in simulated load. These are not presented as production guarantees.
05 / Trade-offs
Limits worth stating
- Simulated interactions do not establish real-user recommendation quality.
- Average delivery time is workload-dependent; no p95 or concurrency claim is supported by the supplied notes.
- Service separation adds operational complexity and requires explicit cache invalidation and failure handling.