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virgi1974 / rails_eager_load.md
Last active January 8, 2023 07:14 — forked from johncip/rails_eager_load.md
Active Record eager loading strategies

N+1 query problem

  • ORMs make it easy to a query per loop iteration, which we want to avoid

eager_load

  • single query (left outer join)
  • can reference the other table's columns in where

preload

  • a few queries (one per table)
  • typically faster
@virgi1974
virgi1974 / download-url-to-file.rb
Created October 10, 2022 21:16 — forked from johnjohndoe/download-url-to-file.rb
Ruby script to download a number of files from individual URLs via HTTP/HTTPS/FTP specified in an external file.
#!/usr/bin/env ruby
#
# Ruby script to download a number of files
# from individual URLs via HTTP/HTTPS/FTP
# specified in an external file.
#
# Author: Tobias Preuss
# Revision: 2013-04-18 16:26 +0100 UTC
# License: Creative Commons Attribution-ShareAlike 3.0 Unported
@virgi1974
virgi1974 / falsehoods-programming-time-list.md
Created October 13, 2021 20:47 — forked from timvisee/falsehoods-programming-time-list.md
Falsehoods programmers believe about time, in a single list

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

  • There are always 24 hours in a day.
  • February is always 28 days long.
  • Any 24-hour period will always begin and end in the same day (or week, or month).
@virgi1974
virgi1974 / fix-libv8-mac.txt
Created May 20, 2021 13:18 — forked from fernandoaleman/fix-libv8-mac.txt
Fixing libv8 and therubyracer on Mac
brew tap homebrew/versions
brew install v8-315
gem install libv8 -v '3.16.14.13' -- --with-system-v8
gem install therubyracer -- --with-v8-dir=/usr/local/opt/v8-315
bundle install
@virgi1974
virgi1974 / docker-pry-rails.md
Created May 6, 2021 15:58 — forked from briankung/docker-pry-rails.md
Using pry-rails with Docker

First, add pry-rails to your Gemfile:
https://github.com/rweng/pry-rails

gem 'pry-rails', group: :development

Then you'll want to rebuild your Docker container to install the gems




  


  




    


          
    

      

        
        

          

              @virgi1974
          

          

            
                virgi1974
                / Dockerfile.dev
            
            

              Created
              April 22, 2021 11:21
                — forked from donrestarone/Dockerfile.dev
            

              
                simple dockerfile for setting up the dependencies for a rails application
              
          

        

      

        

  

    
    


        



  


  

        

          
          FROM ruby:2.6.6-alpine
        

        

          
          

        

        

          
          ENV APP_PATH /var/app
        

        

          
          ENV BUNDLE_VERSION 2.1.4
        

        

          
          ENV BUNDLE_PATH /usr/local/bundle/gems
        

        

          
          ENV TMP_PATH /tmp/
        

        

          
          ENV RAILS_LOG_TO_STDOUT true
        

        

          
          ENV RAILS_PORT 3000
        

        

          
          

        

        

          
          # copy entrypoint scripts and grant execution permissions
        

  





    


  




    


          
    

      

        
        

          

              @virgi1974
          

          

            
                virgi1974
                / docker-compose.yml
            
            

              Created
              April 22, 2021 11:21
                — forked from donrestarone/docker-compose.yml
            

              
                simple docker-compose file for dockerizing the restarone website
              
          

        

      

        

  

    
    


        



  


  

        

          
          version: '3'
        

        

          
          networks:
        

        

          
            development:
        

        

          
            test:
        

        

          
          volumes:
        

        

          
            db_data:
        

        

          
            gem_cache:
        

        

          
            shared_data:
        

        

          
          services:
        

        

          
            restarone_redis:
        

  





    


  




    


          
    

      

        
        

          

              @virgi1974
          

          

            
                virgi1974
                / brew-perms.sh
            
            

              Created
              May 23, 2017 07:34
                — forked from jaibeee/brew-perms.sh
            

              
                Configure homebrew permissions to allow multiple users on MAC OSX. Any user from the admin group will be able to manage the homebrew and cask installation on the machine.
              
          

        

      

        

  

    
    


        



  


  

        

          
          #!/bin/sh
        

        

          
          # Configure homebrew permissions to allow multiple users on MAC OSX.
        

        

          
          # Any user from the admin group will be able to manage the homebrew and cask installation on the machine.
        

        

          
          

        

        

          
          # allow admins to manage homebrew's local install directory
        

        

          
          chgrp -R admin /usr/local
        

        

          
          chmod -R g+w /usr/local
        

        

          
          

        

        

          
          # allow admins to homebrew's local cache of formulae and source files
        

        

          
          chgrp -R admin /Library/Caches/Homebrew
        

  





    


  




    


          
    

      

        
        

          

              @virgi1974
          

          

            
                virgi1974
                / rm_mysql.md
            
            

              Last active
              July 5, 2021 07:58
                — forked from vitorbritto/rm_mysql.md
            

              
                Remove MySQL completely from Mac OSX
              
          

        

      

        

  

      

    
Remove MySQL completely


    

  1. 

    Open the Terminal
    

    2. 

  2. 

    Use mysqldump to backup your databases
    

    3. 

  3. 

    Check for MySQL processes with: ps -ax | grep mysql
    

    4. 

  4. 

    Stop and kill any MySQL processes
    

    5. 

  5. 

    Analyze MySQL on HomeBrew:
    

    

    6. 



brew remove mysql



  


  




    


          
    

      

        
        

          

              @virgi1974
          

          

            
                virgi1974
                / 0. Ruby Meta Programming - spells covered.md
            
            

              Created
              April 26, 2017 21:45
                — forked from Integralist/0. Ruby Meta Programming - spells covered.md
            

              
                Ruby Meta Programming
              
          

        

      

        

  

      

    
    

  • Dynamic Dispatch
    • 

  • Dynamic Method
    • 

  • Ghost Methods
    • 

  • Dynamic Proxies
    • 

  • Blank Slate
    • 

  • Kernel Method
    • 

  • Flattening the Scope (aka Nested Lexical Scopes)
    • 

  • Context Probe
    • 

  • Class Eval (not really a 'spell' more just a demonstration of its usage)
    • 

  • Class Macros
    •