Nano

Nano is a persistent, secure, key-value store I built from scratch in python to understand how sockets, async i/o, and LSM Trees work

Usage

Clone the repository

$ git clone https://github.com/SujayKarpur/Nano.git
$ cd Nano

Set up and activate a python virtual environment

$ python3 -m venv venv
$ source venv/bin/activate

Installs and Permissions...

$ pip install -r requirements.txt
$ sudo chmod +x nano

Start the server

$ python -m server 

Open a new tab and run the client

$ ./nano

API

General

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help
Displays help menu.

exit
Exits the session.

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Database-Level Commands

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LIST
Lists all databases.

CREATE <database>
Creates a database.

DROP <database>
Drops a database.

SHARE <username> <permission_level>
Grants another user permissions to read/write/share the selected database.

SELECT <database>
Selects a database.

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Modify the Selected Database

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GET <key>
Retrieves a value.

SET <key> <value>
Sets a key’s value.

DELETE <key>
Deletes a key.

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I. Key Value Stores

key-value stores are the simplest kind of databases - they are just mappings from keys to values.

Nano implements a basic in-memory key-value store using python dictionaries that supports some simple operations:

II. Networking

III. Handling Multiple Clients

IV. Concurrent Client Handling

V. Persistence

VI. LSM Trees

VII. Security

VIII. Future Improvements

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References