Command Line REPL — In-Memory Key-Value Store

A command-line REPL for an in-memory key-value store that supports nested transactions, rollback/commit, and basic commands.

Installation

go mod download

go run .

go test ./...

Command	Description	Output
`SET <key> <value>`	Sets key to value	Silent
`GET <key>`	Prints the current value	Value or `NULL`
`DELETE <key>`	Removes key if it exists	Silent
`COUNT <value>`	Prints how many keys equal value	Count
`BEGIN`	Starts a new transaction	Silent
`ROLLBACK`	Reverts the most recent transaction	Silent or `NO TRANSACTION`
`COMMIT`	Permanently applies all open transactions	Silent or `NO TRANSACTION`
`END`	Exits the program	Silent