Fast unique smol ID generator

# smolid.md

Smaller than UUID and copy-paste friendly.

JIN5gNQEwht8999c4xZx9
88AFNNkR1RJI1gs8BBwxV
c54wMAUAR4wkFs9dN9Jts

Inspired by Nano ID

PHP implementation as composer package: https://github.com/shanginn/smolid

postgresql.sql

-- Function: smolid
-- Generates a random string of a specified size using the provided alphabet
-- size: The length of the generated string (default is 21)
-- alphabet: A string of characters from which the random string will be created (default is upper/lower case letters and digits)

CREATE OR REPLACE FUNCTION smolid(
    size INTEGER DEFAULT 21,
    alphabet TEXT DEFAULT 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789'
)
RETURNS TEXT AS $$
DECLARE
    result TEXT := '';
    i INTEGER;
BEGIN
    FOR i IN 1..size LOOP
        result := result || substr(alphabet, floor(random() * length(alphabet) + 1)::int, 1);
    END LOOP;
    RETURN result;
END;
$$ LANGUAGE plpgsql;

python.py

import random

def smolid(self, size: int = 21, alphabet: str = string.ascii_letters + string.digits) -> str:
    """
    Generate a random ID of the given size using the specified alphabet.
    :param size: Length of the random ID to generate, defaults to 21
    :param alphabet: Characters to use for generating the ID, defaults to alphanumeric characters
    :return: Randomly generated ID as a string
    """
    return ''.join(random.choice(alphabet) for _ in range(size))