TODO (WANTED)

Architecture

Event sourcing with CQRS

Data Analysis/Distributed Computing

Simple recommendation service (e.g. collaborative filtering with machine learning)
Distributed computing integration (e.g. Apache Spark, Apache Flink)

Metrics/Monitoring

Performance/metrics monitoring and tuning
Logging integration with ELK stack

Search Engine

Full-index search integration (e.g. with Solr or Elasticsearch)

Integration

With Apache Kafka (message queue/streaming)
With Consul (service discovery/heartbeat check)

Container/Deployment

Mesos