twitterlite

How to start

After retrieving the code from GitHub using maven the only thing to do is to execute the following command in the TwitterLite folder:

mvn clean install exec:java

It will do the following:

• Builds the code
• Executes checkstyle
• Executes the tests implemented
• If there were no errors it finally starts the application

Identified improvement possibilities

• Create integration test to cover all the example scenarios
• Use spring to handle dependency injection nicely
• Add logging
• Introduce client / server model (also take care of caching and concurrency)
• Persist data in a key - value datastore
• Localization for the time stamps

Task

Implement a simplified, console-based version of a Twitter-like social networking application satisfying the scenarios below:

• Posting: Alice can publish messages to a personal timeline
• Reading: Bob can view Alice’s timeline
• Following: Charlie can subscribe to Alice’s and Bob’s timelines, and view them on his wall, an aggregated list of all subscriptions

General requirements

• Application must use the console for input and output;
• User submits commands to the application: -- posting: -> -- reading: -- following: follows -- wall: wall
• Don't worry about handling any exceptions or invalid commands. Assume that the user will always type the correct commands. Just focus on the sunny day scenarios.
• Use whatever language and frameworks you want. (provide instructions how to run the application)
• The program should prompt “>”, signifying that the user can enter the commands through the standard input. The program will either reply (e.g. for the view timeline command) or not (posting command), depending on the current state.
• The state should not be persisted, keeping data in memory is sufficient.