RedDB

This project is a simple clone of a well-known redis, powered by the Java programming language

Redis is a complex key-value database. It involves many complex cases and requires a solid system architecture. This project is just a demo, showing only a minor percentage of what real Redis can do.

There are two primary reasons why I do this. First of all, it's for understanding how to work with asynchronous programming in Java. And second of all, I do it just for fun :)

Implemented commands

• ECHO
• PING
• EXISTS
• GET
• SET
• QUIT
• DEL

Design

RedDB, as mentioned, is powered by Java 21. It runs in a single thread, thanks to a Java ExecutorService. The server is implemented with the default Java.net package. The RESP protocol parser is very basic. only supports simple data structures, like strings and integers.

Technologies

• redis-cli
• Java 21
• Gradle
• Docker
• Junit
• logback

Build

Clone the repo:

    git clone https://github.com/MasoNord/redDB

Build an executable jar file. If you don't have Gradle installed on your PC, just build it in the IDE. Other programs do this:

    gradle build

Run the executable jar file from the root directory.

    java -jar build/libs/redDB-1.0-SNAPSHOT.jar

Docker

You can also run a Docker image of RedDB using the following commands:

    docker build -t <you-image-name> .

And then run the image

    docker run -p 6379:6379 <you-image-name> 

Usage

After you completed the previous steps, you can now run redis-cli in your terminal to connect to redDB server