Requirements

Main

Three types of operations should be performed on the server:
- PUT (key, value) ✅
- GET (key) ✅
- DELETE (key) ✅
Use a hash map as a kv store ✅
Server is replicated across 5 instances ✅
Clients should be able to connect to any of the replicas ✅
All the replicas should be consistent with each other using 2PC ✅
To ensure 2PC will not stall use timeouts ✅
Servers should ensure consistency using prepare and commit stages ✅

Other

Client should pre-populate the KV store with some data, at least 5 of each operations once the database is populated. ✅

Client req

CLI args for the client, in the order listed:
- The hostname or IP address of the server (it must accept either). ✅
- The port number of the server. ✅
Client should have a timeout mechanism and note an unresponsive server in a log message. ✅
Log should be timestamped with the current system time in ms precision. ✅

Server req

CLI args for the server, in the order listed:
- the port number of the coordinator ✅
- the port number to listen on ✅
Server should run forever
Server should print logs of requests received and responses. ✅
Log should be timestamped with the current system time in ms precision. ✅
Server should be multithreaded ✅
Mutual exclusion should be handled ✅
Server should be consistent with all it's replicas ✅

Coordinator req

CLI args for the server, in the order listed:
- the port number to listen on ✅
Coordinator should run forever
Coordinator should print logs from 2PC stages. ✅
Log should be timestamped with the current system time in ms precision. ✅
Coordinator should be multithreaded ✅
Mutual exclusion should be handled ✅
Coordinator should handle timeouts in the case of unresponsive servers ✅