Redis Implementation Project

This project is a Redis-like implementation written in TypeScript, aiming to provide basic Redis functionalities such as string operations, list operations, set operations, and pub/sub messaging, along with the addition of Streams functionality.

Features

String Operations

• SET: Set the value of a key.
• GET: Get the value of a key.
• MGET: Get the values of multiple keys.
• SETNX: Set the value of a key only if it does not exist.

List Operations

• LPUSH: Insert one or multiple values at the beginning of a list.
• RPUSH: Insert one or multiple values at the end of a list.
• LPOP: Remove and get the first element in a list.
• RPOP: Remove and get the last element in a list.
• LRANGE: Get a range of elements from a list.
• LLEN: Get the length of a list.
• BRPOP: Remove and get the last element in a list, or block until one is available.
• BLPOP: Remove and get the first element in a list, or block until one is available.

Set Operations

• SADD: Add one or more members to a set.
• SREM: Remove one or more members from a set.
• SISMEMBER: Determine if a given value is a member of a set.
• SINTER: Intersect multiple sets and return the result.

Pub/Sub Messaging

• SUBSCRIBE: Subscribe to one or more channels.
• PUBLISH: Publish a message to a channel.
• PSUBSCRIBE: Subscribe to one or more channel patterns.
• UNSUBSCRIBE: Unsubscribe from one or more channels or patterns.

Streams

• XADD: Append a new element to a stream.
• XREAD: Read data from one or more streams.

Usage

1. Clone the repository and move into the directory:

git clone https://github.com/sanjay-sol/redis

cd redis

2. Install dependencies:

npm install

3. Start the server:

npm start

4. Connect to the server using a Redis client or use the CLI:

 redis-cli -p 8000 

5. Start using Redis commands, e.g.:

127.0.0.1:8000 > SET mykey "Hello"
127.0.0.1:8000 > GET mykey
127.0.0.1:8000 > LPUSH mylist "world"
127.0.0.1:8000 > LRANGE mylist 0 -1

Contributing

Contributions are welcome! If you have any suggestions or find any issues, please open an issue or create a pull request.