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@nickjj
nickjj / cron-sendy-backup
Last active December 27, 2023 07:16
An example of creating a database backup and restore script for MySQL, MariaDB and PostgreSQL. It is focused on backing up and restoring a Sendy database (working example from https://www.youtube.com/watch?v=kbCytSYPh0E) but you can apply it for any database with slight modifications.
30 0 * * * root /usr/local/bin/sendy-backup > /dev/null 2>&1
@arjunvenkat
arjunvenkat / gist:1115bc41bf395a162084
Last active January 12, 2024 05:04
Seeding a Rails database with a CSV file

How to seed a Rails database with a CSV file

1. Setup

First, Create a folder inside of lib called seeds

Put your CSV file example.csv into the lib/seeds folder. In the example below, the file is called real_estate_transactions.csv

Make sure you've created a resource with the appropriate columns to match your seed data. The names don't have to match up.

@O-I
O-I / weighted_random_sampling.md
Last active February 21, 2024 19:02
[TIx 8] Weighted Random Sampling in Ruby

One of the many reasons I love working with Ruby is it has a rich vocabulary that allows you to accomplish your goals with a minimal amount of code. If there isn't a method that does exactly what you want, it's usually possible to build an elegant solution yourself.

Let's take the example of simulating the rolling of a die.

We can represent a die as an array of its faces.

die = [*?⚀..?⚅]
# => ["⚀", "⚁", "⚂", "⚃", "⚄", "⚅"]