serg-kovalev

require 'objspace'

# Helper function to format memory size into human-readable units
def human_readable_size(size_in_bytes)
  return "#{size_in_bytes} bytes" if size_in_bytes < 1024
  return "#{(size_in_bytes / 1024.0).round(2)} KB" if size_in_bytes < 1024 * 1024
  return "#{(size_in_bytes / 1024.0 / 1024.0).round(2)} MB" if size_in_bytes < 1024 * 1024 * 1024
  return "#{(size_in_bytes / 1024.0 / 1024.0 / 1024.0).round(2)} GB"
end

serg-kovalev

Step-by-Step Guide

Install Homebrew (if not already installed)

Open a terminal and run the following command:

/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"

Check Installed PostgreSQL Versions

To see if PostgreSQL is already installed via Homebrew, you can use:

serg-kovalev

#!/bin/sh
### you can add it to cron and execute on hourly/daily/weekly/monthly basis
### this script logs into cleanup_logs.log file
find /home /var/log -type f -name "*.log" -exec bash -c 'size=$(du -m "{}" | cut -f1); [ "$size" -gt 1 ] && truncate -s 1M "{}" && echo "{}"' \; >> cleanup_logs.log
echo "last started at $(date)"  >> cleanup_logs.log

serg-kovalev

#!/bin/bash
set -ueo pipefail

usage_example="USAGE:\n\tExample: ./remove_node_modules ~/your-dev-folder"

if [ $# -lt 1 ]
  then
    echo -e $usage_example
    exit 1
fi

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version: '2'
services:
  zookeeper:
    image: wurstmeister/zookeeper
    ports:
      - "2181:2181"
  kafka-1:
    image: wurstmeister/kafka
    ports:
      - "9095:9092"

serg-kovalev

openssl genrsa -out jwtRS256private.pem 2048
openssl rsa -in jwtRS256private.pem -outform PEM -pubout -out jwtRS256public.pem

serg-kovalev

Setting Up Private GitHub Repos with Bundler on Heroku

To get a private GitHub repo to work on Heroku, you can leverage the netrc buildpack in conjunction with the Heroku Ruby buildpack.

When setting up the Gemfile, make sure to use the https GitHub URL. This mechanism does not work with git+ssh.

gem "some_private_gem", git: "https://github.com/org/some_private_gem.git"

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#.ebextensions/01-edit-nginx.config

container_commands:
  01backup_config:
    command: "cp -n /opt/elasticbeanstalk/support/conf/nginx_config.erb /opt/elasticbeanstalk/support/conf/nginx_config.erb.original"
  02edit_config:
    command: "sh -c \"sed '/string_to_insert_text_after/ i\
\    text_to_be_inserted;' /opt/elasticbeanstalk/support/conf/nginx_config.erb.original > /opt/elasticbeanstalk/support/conf/nginx_config.erb\""

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ruby -rsocket -e "trap('SIGINT') { exit }; Socket.tcp_server_loop(8080) { |s,_| puts s.readpartial(1024); puts; s.puts 'HTTP/1.1 200'; s.close }

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RSpec::Mocks.space.proxy_for(SomeClass).reset