| /** | |
| * Timeago is a jQuery plugin that makes it easy to support automatically | |
| * updating fuzzy timestamps (e.g. "4 minutes ago" or "about 1 day ago"). | |
| * | |
| * @name timeago | |
| * @version 1.4.1 | |
| * @requires jQuery v1.2.3+ | |
| * @author Ryan McGeary | |
| * @license MIT License - http://www.opensource.org/licenses/mit-license.php | |
| * |
| Cognitive biases: | |
| Confirmation bias: The tendency to seek out and interpret information in a way that confirms one's existing beliefs. Example: A person who believes that vaccines are dangerous only seeks out and pays attention to information that supports this belief, while ignoring information that contradicts it. | |
| Sunk cost fallacy: The tendency to continue investing resources into a decision because of the resources that have already been invested. Example: A person continues to work on a project they know is failing because they have already invested so much time and money into it. | |
| Availability heuristic: The tendency to overestimate the likelihood of events that are easily brought to mind. Example: A person who recently heard about a plane crash is more likely to believe that plane crashes are more common than car accidents. | |
| Anchoring bias: The tendency to rely too heavily on the first piece of information encountered when making decisions. Example: A person who is looking to buy a used car is more like |
The code here is a tech demo showing how to switch between databases in Rails 5, in a thread-safe manner.
The simple way to switch databases is:
ActiveRecord::Base.establish_connection :user_shard1
puts User.find(1) # this is executed on the database keyed on "user_shard1" in database.yml
ActiveRecord::Base.establish_connection :development
| ### | |
| A meta-compilation of: | |
| https://raw.github.com/gist/1453705/d253733a56632a8d2c29321a75c18b627fa4dda8/reserved_usernames.rb | |
| http://blog.postbit.com/reserved-username-list.html | |
| http://www.quora.com/How-do-sites-prevent-vanity-URLs-from-colliding-with-future-features | |
| (Took out some company-specific terms at the top of the first one (e.g. imulus, stacks), added one term so far - 'edits'.) | |
| NOTE: Does not include profanities. You may or may not want to add a list of those. | |
| (See https://www.google.com/search?q=profanity+list, but don't try to apply regexp's here because Scunthorpe - http://en.wikipedia.org/wiki/Scunthorpe_problem) |
| # Certbot can be a bit tedious, but it's easy to automate a one-liner non-interactive. Substitute your own domain and email below. | |
| sudo service apache2 stop && sudo certbot --apache -d example.com -m admin@example.com --non-interactive --agree-tos && sudo service apache2 start |
| #!/usr/bin/env ruby | |
| # Based on https://sive.rs/com - extended it to read from gzipped file, support any domain extension, and output to separate file | |
| require 'hashie' | |
| require 'zlib' | |
| class Parser < Hashie::Dash | |
| property :extension, required: 'true' # e.g. "com" for dotcom database |
A few general tips to deal with slow performance and hanging. Target system is Ubunty 20.04 and MySQL 8.0, but applicable to other configurations.
Relies on some functions in https://github.com/mahemoff/dotfiles
MySQL can log slow queries. Enable it in /etc/mysql/mysql.conf.d/mysqld.cnf.
slow_query_log = 1
| # Run with: rake environment elasticsearch:reindex | |
| # Begins by creating the index using tire:import command. This will create the "official" index name, e.g. "person" each time. | |
| # Then we rename it to, e.g. "person20121001" and alias "person" to it. | |
| namespace :elasticsearch do | |
| desc "re-index elasticsearch" | |
| task :reindex => :environment do | |
| klasses = [Place, Person, Caption] |
A few examples from MediaWiki/Wikipedia API.
(see https://www.mediawiki.org/w/api.php?action=help&modules=query)
| def self.uniq! queue_name | |
| seen_already = Set.new | |
| Sidekiq::Queue.new(queue_name).each { |job| | |
| key = { job.klass => job.args } | |
| key.in?(seen_already) ? job.delete : seen_already << key | |
| } | |
| end |