seyhunak

# The initial was for Varnish 2.1, this has been updated for Varnish 3.
# The upgrade changes were based on the docs here:
# https://www.varnish-cache.org/docs/3.0/installation/upgrade.html
# https://www.varnish-cache.org/docs/2.1/tutorial/vcl.html
# https://www.varnish-cache.org/trac/wiki/VCLExamples

# Summary
# 1. Varnish will poll the backend at /health_check to make sure it is
#    healthy. If the backend goes down, varnish will server stale content
#    from the cache for up to 1 hour.

seyhunak

Varnish Admin:

varnishtop -i txurl
varnishadm -T 127.0.0.1:6082 url.purge // Purge all cache (requires authentication)
varnishadm "ban req.url ~ /"

Varnish Test:
sudo apt-get install libwww-perl && GET -Used http://localhost:6081/index.html

seyhunak

dig www.domain.com +nostats +nocomments +nocmd

seyhunak

1. Use on loop each_with_index

<% if index % 4 == 0 %>
# do stuff
<% end %>

seyhunak

backend default {
  .host = "127.0.0.1";
  .port = "8080";
  .connect_timeout = 600s;
  .first_byte_timeout = 600s;
  .between_bytes_timeout = 600s;
}

acl purge {
  "localhost";

seyhunak

require "sinatra/base"
require "sinatra/namespace"
require "multi_json"

require "api/authentication"
require "api/error_handling"
require "api/pagination"

module Api
  class Base < ::Sinatra::Base

seyhunak

### /script/background_jobs

#!/usr/bin/env bash
cd $(dirname $0)/..
app_root=$(pwd)
sidekiq_pidfile="$app_root/tmp/pids/sidekiq.pid"
sidekiq_logfile="$app_root/log/sidekiq.log"
app_user=$(ls -l config.ru | awk '{print $3}')

function stop {

seyhunak

### lib/tasks/cache.rake

namespace :cache do
  desc "Clear redis cache"
  task :clear => :environment do
    Rails.cache.clear
  end
end

seyhunak

scp -r user@your.server.example.com:/path/to/foo /home/user/Desktop/
scp -i mykey.pem somefile.txt root@ec2-184-73-72-150.compute-1.amazonaws.com:/

seyhunak

function getURLParameters(url) {

  var result = {};
  var searchIndex = url.indexOf("?");
  if (searchIndex == -1 ) return result;
  var sPageURL = url.substring(searchIndex +1);
  var sURLVariables = sPageURL.split('&');
  for (var i = 0; i < sURLVariables.length; i++)
  {
    var sParameterName = sURLVariables[i].split('=');