Autonomous systems project

This is the implementation for autonomous systems, ALFP, year 2, West University of Timisoara.

Implementation

The implementation features an actor system that implements a distributed database, as well as an HTTP server to interact with this database.

The following functionality is available and provided by the system:

• distributed storage across multiple partitions
• automatic recovery of failed actors and reloading of data, in order to avoid loss

REST API

The following functionality is provided:

• PUT /data - with query params key and value, add a piece of data at that specific key . If the key already existed, then the previous data is removed.
• GET /data - query param key; gets the value at that key or an empty response in case nothing is there
• DELETE /data - query param id; allows the user to remove a piece of data from the collection
• GET /actors - get the names and last heartbeat time for all data storage actors
• DELETE /actors - query param id; cause the system to kill one of the actors, if the id is a correct one. The system will then discover that the actor is dead and proceed with replacing it with a new instance
• GET /data/all - get all data from all actors, grouped by partition into different lists

Teacher's questions:

Design the architecture and a few functionalities.

Some questions:

• how and when is it noticed that data has been lost
• who, when and what must be done in order to finish the data

These at the presentation.

Copyright

Cristian Schuszter, 2018 All rights reserved