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conorh / ransack.md
Created November 10, 2023 23:15 — forked from raghubetina/ransack.md
Ransack Cheatsheet

Ransack Cheatsheet

The Ransack gem provides us with a powerful, flexible, easy-to-integrate search/filter form.

Installation

In your Gemfile, include

gem 'ransack'
@n-studio
n-studio / DEPLOY_WITH_KAMAL_ON_DEDICATED_SERVER.md
Last active May 4, 2025 11:09
Deploy a web app on a dedicated server with Kamal

Notes

This guide uses Kamal 2.5.3

Motivation

Kamal was designed with 1 service = 1 droplet/VPS in mind.
But I'm cheap and I want to be able to deploy multiple demo/poc apps apps on my $20/month dedicated server.
What the hell, I'll even host my private container registry on it.

@noraj
noraj / 01-mini-netstat.rb
Last active March 2, 2023 22:29
netstat -ta4 or ss -ta4 equivalent in Ruby and Crystal
require 'etc'
TCP_STATES = { # /usr/src/linux/include/net/tcp_states.h
'00': 'UNKNOWN',
'FF': 'UNKNOWN',
'01': 'ESTABLISHED',
'02': 'SYN_SENT',
'03': 'SYN_RECV',
'04': 'FIN_WAIT1',
'05': 'FIN_WAIT2',
@iconara
iconara / queries.sql
Last active November 13, 2023 22:26
Low level Redshift cheat sheet
-- Table information like sortkeys, unsorted percentage
-- see http://docs.aws.amazon.com/redshift/latest/dg/r_SVV_TABLE_INFO.html
SELECT * FROM svv_table_info;
-- Table sizes in GB
SELECT t.name, COUNT(tbl) / 1000.0 AS gb
FROM (
SELECT DISTINCT datname, id, name
FROM stv_tbl_perm
JOIN pg_database ON pg_database.oid = db_id
@pitch-gist
pitch-gist / gist:2999707
Created June 26, 2012 22:21
HTML: Simple Maintenance Page
<!doctype html>
<title>Site Maintenance</title>
<style>
body { text-align: center; padding: 150px; }
h1 { font-size: 50px; }
body { font: 20px Helvetica, sans-serif; color: #333; }
article { display: block; text-align: left; width: 650px; margin: 0 auto; }
a { color: #dc8100; text-decoration: none; }
a:hover { color: #333; text-decoration: none; }
</style>
@joeyAghion
joeyAghion / simple_redis_profile.rb
Created October 13, 2010 16:00
By sampling keys from your redis databases, this script tries to identify what types of keys are occupying the most memory.
#!/usr/bin/env ruby
# Evaluates a sample of keys/values from each redis database, computing statistics for each key pattern:
# keys: number of keys matching the given pattern
# size: approximation of the associated memory occupied (based on size/length of value)
# percent: the proportion of this 'size' relative to the sample's total
#
# Copyright Weplay, Inc. 2010. Available for use under the MIT license.