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@vitorbritto
vitorbritto / rm_mysql.md
Last active April 6, 2025 09:16
Remove MySQL completely from Mac OSX

Remove MySQL completely

  1. Open the Terminal

  2. Use mysqldump to backup your databases

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

  4. Stop and kill any MySQL processes

  5. Analyze MySQL on HomeBrew:

    brew remove mysql
    
@xiaohanyu
xiaohanyu / yaml_to_json.rb
Created September 1, 2014 06:29
convert yaml to json in ruby
require 'json'
require 'yaml'
input_filename = ARGV[0]
output_filename = input_filename.sub(/(yml|yaml)$/, 'json')
input_file = File.open(input_filename, 'r')
input_yml = input_file.read
input_file.close
@denji
denji / nginx-tuning.md
Last active April 21, 2025 11:07
NGINX tuning for best performance

NGINX Tuning For Best Performance

For this configuration you can use web server you like, i decided, because i work mostly with it to use nginx.

Generally, properly configured nginx can handle up to 400K to 500K requests per second (clustered), most what i saw is 50K to 80K (non-clustered) requests per second and 30% CPU load, course, this was 2 x Intel Xeon with HyperThreading enabled, but it can work without problem on slower machines.

You must understand that this config is used in testing environment and not in production so you will need to find a way to implement most of those features best possible for your servers.

@anotheruiguy
anotheruiguy / web-fonts-asset-pipeline.md
Last active April 12, 2025 18:16
Custom Web Fonts and the Rails Asset Pipeline

Web fonts are pretty much all the rage. Using a CDN for font libraries, like TypeKit or Google Fonts, will be a great solution for many projects. For others, this is not an option. Especially when you are creating a custom icon library for your project.

Rails and the asset pipeline are great tools, but Rails has yet to get caught up in the custom web font craze.

As with all things Rails, there is more then one way to skin this cat. There is the recommended way, and then there are the other ways.

The recommended way

Here I will show how to update your Rails project so that you can use the asset pipeline appropriately and resource your files using the common Rails convention.

@Antti
Antti / quartile.rb
Created June 13, 2013 12:59
median & quartile
def median_split(arr)
c = arr.size%2
subset = [arr[0..arr.size/2-1], arr[arr.size/2+c..-1]]
m = median arr
subset[0].push m
subset[1].unshift m
subset
end
def median(arr)
@r00k
r00k / gist:4287576
Created December 14, 2012 18:40
Recommended reading.
@trcarden
trcarden / gist:3295935
Created August 8, 2012 15:28
Rails 3.2.7 SSL Localhost (no red warnings, no apache config)
# SSL self signed localhost for rails start to finish, no red warnings.
# 1) Create your private key (any password will do, we remove it below)
$ openssl genrsa -des3 -out server.orig.key 2048
# 2) Remove the password
$ openssl rsa -in server.orig.key -out server.key
@shunchu
shunchu / convert-seconds-into-hh-mm-ss-in-ruby.rb
Created July 25, 2012 07:58
Convert seconds into HH:MM:SS in Ruby
t = 236 # seconds
Time.at(t).utc.strftime("%H:%M:%S")
=> "00:03:56"
# Reference
# http://stackoverflow.com/questions/3963930/ruby-rails-how-to-convert-seconds-to-time
@dblandin
dblandin / states.rb
Created June 25, 2012 22:51
Ruby array of US state name and abbreviations
states = Array[ ["AK", "Alaska"],
["AL", "Alabama"],
["AR", "Arkansas"],
["AS", "American Samoa"],
["AZ", "Arizona"],
["CA", "California"],
["CO", "Colorado"],
["CT", "Connecticut"],
["DC", "District of Columbia"],
["DE", "Delaware"],
@dazoakley
dazoakley / passenger_process_monitor.rb
Created January 6, 2012 10:28
Script for killing errant passenger processes
#!/usr/bin/env ruby
#
# Passenger Process Monitor
#
# By Darren Oakley
# Based heavily on a script by James Smith (https://gist.github.com/851520)
# That in turn was based on a similar script by Jon Bettcher
#
# - Check memory usage of all paseenger child process and kill if grows too large.