Operations Supported

1. GET (Syntax: GET key): Returns the corresponding value.
2. PUT (Syntax: PUT key value): Adds the KV pair to the database.
3. DEL (Syntax: DEL key): Delete key from database.
4. STORE (Syntax: STORE): Print entire database.

The database is distributed and can run on multiple machines.

Compilation instructions:

1. Clone the branch depending on communication method (tcp, udp, rmi)
2. Compile files using

javac Program.java

Running instructions:

• If running the program on multiple physical hosts, replace localhost in the below commands to that host's ip address.
• For running on same host use localhost.

For UDP:

Running command syntax (For 2 nodes. Can be extended similarly to n nodes):

java Program <current_node_id> <total_node_count> <node_1_id>:<node_1_ip_address> <node_2_id>:<node_2_ip_address>

Example commands for running 2, 3, 4 nodes:

• For running 2 nodes run these commands in 2 different terminals:

  • For node 0:

  java Program 0 2 0:localhost 1:localhost

  • For node 1:

  java Program 1 2 0:localhost 1:localhost 

• Similarly For running 3 nodes run these commands in 3 different terminals:

  • For node 0:

  java Program 0 3 0:localhost 1:localhost 2:localhost

  • For node 1:

  java Program 1 3 0:localhost 1:localhost 2:localhost

  • For node 2:

  java Program 2 3 0:localhost 1:localhost 2:localhost

• For running 4 nodes run these commands in 4 different terminals:

  • For node 0:

  java Program 0 4 0:localhost 1:localhost 2:localhost 3:localhost

  • For node 1:

  java Program 1 4 0:localhost 1:localhost 2:localhost 3:localhost

  • For node 2:

  java Program 2 4 0:localhost 1:localhost 2:localhost 3:localhost

  • For node 3:

  java Program 3 4 0:localhost 1:localhost 2:localhost 3:localhost

For TCP:

• If running on multiple physical hosts use following command:
• On host 0:

java Program 0 2 <host_0_ip_address> <host_1_ip_address>

• On host 1:

java Program 1 2 <host_1_ip_address> <host_0_ip_address>

Running command syntax (For 2 nodes. Can be extended similarly to n nodes):

java Program <current_node_id> <total_node_count> <node_1_ip_address> <node_2_ip_address>

Example commands for running 2, 3, 4 nodes:

• For running 2 nodes run these commands in 2 different terminals:

  • For node 0:

  java Program 0 2

  • For node 1:

  java Program 1 2 

• Similarly For running 3 nodes run these commands in 3 different terminals:

  • For node 0:

  java Program 0 3

  • For node 1:

  java Program 1 3

  • For node 2:

  java Program 2 3

• For running 4 nodes run these commands in 4 different terminals:

  • For node 0:

  java Program 0 4

  • For node 1:

  java Program 1 4 

  • For node 2:

  java Program 2 4 

  • For node 3:

  java Program 3 4 

For RMI:

• If running on multiple physical hosts use following command:
• On host 0:

java Program 0 2 <host_0_ip_address> <host_1_ip_address>

• On host 1:

java Program 1 2 <host_1_ip_address> <host_0_ip_address>

Running command syntax (For 2 nodes. Can be extended similarly to n nodes):

java Program <current_node_id> <total_node_count> <node_1_ip_address> <node_2_ip_address>

Example commands for running 2, 3, 4 nodes:

• For running 2 nodes run these commands in 2 different terminals:

  • For node 0:

  java Program 0 2 

  • For node 1:

  java Program 1 2  

• Similarly For running 3 nodes run these commands in 3 different terminals:

  • For node 0:

  java Program 0 3 

  • For node 1:

  java Program 1 3 

  • For node 2:

  java Program 2 3 

• For running 4 nodes run these commands in 4 different terminals:

  • For node 0:

  java Program 0 4

  • For node 1:

  java Program 1 4

  • For node 2:

  java Program 2 4

  • For node 3:

  java Program 3 4