Practical implementation of a Twitter-like application.
Swagger: http://localhost:8080/swagger-ui/index.html
A Twitter-style platform built with clean architecture, domain-driven design (DDD), and event-driven architecture. Users can create tweets, follow others, and browse timelines.
Features:
- Tweets: Create tweets and view your own profile timeline.
- Search: Find tweets by keyword.
- Follows & Timelines: Follow users and see their tweets in your home timeline.
Pluggable Data Layer:
The clean architecture design keeps business logic independent of infrastructure so databases and search engines can be swapped and compared, enabling side-by-side evaluation of the following different stores:
- PostgreSQL
- MongoDB
- Elasticsearch
This lets you compare search capabilities (e.g., PostgreSQL full-text, MongoDB text indexes, Elasticsearch inverted index) without changing core domain code.
Event-Driven Architecture:
Timelines are generated via an event-driven flow: when a user posts a new tweet, an event is emitted; a handler consumes the event and fan-outs the tweet into the timelines of all the author’s followers. This decouples write paths from read models and keeps timelines fast.
- Gradle
- Java 17
- Spring Boot
- PostgreSQL
- Elasticsearch
- MongoDB
- Docker Compose
Shaimaa Sabry
