KeyValueStore

KeyValueStore is an in-memory key-value store service similar to Redis, implemented in Python. It supports basic data commands and transactional commands, with thread safety ensured through the use of locks.

Features

• Set, get, and unset key-value pairs.
• Support for transactions with BEGIN, ROLLBACK, and COMMIT commands.
• Nested transactions support.
• Thread-safe operations.

Available Commands

• SET name value – Set the variable name to the value value.
• GET name – Print out the value of the variable name, or NULL if that variable is not set.
• UNSET name – Unset the variable name.
• BEGIN – Open a new transaction block. Transactions can be nested.
• ROLLBACK – Undo commands issued in the current transaction, and close it.
• COMMIT – Close all open transactions, permanently applying the changes made in them.

Example

python3 main.py

SET a 10
----- Command Processed -----
GET a 
10
----- Command Processed -----
BEGIN
----- Command Processed -----
SET a 20
----- Command Processed -----
GET a
20
----- Command Processed -----
ROLLBACK
----- Command Processed -----
GET a
10
----- Command Processed -----
COMMIT
NO TRANSACTION
----- Command Processed -----
ROLLBACK
NO TRANSACTION
----- Command Processed -----
END

##Running Tests

To run the tests, use the following command:

python3 -m unittest discover -s tests