plcstevens’s gists

plcstevens / postgres_queries_and_commands.sql

Created January 17, 2019 11:45 — forked from rgreenjr/postgres_queries_and_commands.sql

Useful PostgreSQL Queries and Commands

	-- show running queries (pre 9.2)
	SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
	FROM pg_stat_activity
	WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
	ORDER BY query_start desc;

	-- show running queries (9.2)
	SELECT pid, age(clock_timestamp(), query_start), usename, query
	FROM pg_stat_activity
	WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'

plcstevens / Schema.elm

Created August 20, 2018 15:40

A basic example of trying to create a schema ignorant JSON decoder in ELM

	import Dict exposing (Dict)
	import Json.Decode as Decode

	type SchemaData
	= SchemaObject (Dict String SchemaData)
	\| SchemaList (List SchemaData)
	\| SchemaString String
	\| SchemaInt Int
	\| SchemaBool Bool
	\| SchemaNull

plcstevens / controller_example.rb

Last active August 29, 2015 14:26

Include this in controllers and render with your JSON to get pagination URLs matching http://jsonapi.org/format/#fetching-pagination specification. Requires that you use https://github.com/amatsuda/kaminari

	class ExamplesController < ApplicationController
	def index
	@examples = Example.order(id: :desc)
	render json: { pagination: paginate(@examples), examples: @examples }
	end

	private

	def paginate(active_relation)
	Pagination.for(self, active_relation)

plcstevens / elasticsearch_reindex.rb

Last active September 8, 2015 17:33

	es_alias = ENV.fetch('ALIAS')
	hosts = ENV.fetch('HOSTS')
	old_index = ENV.fetch('OLD_INDEX')
	old_type = ENV.fetch('OLD_TYPE')
	new_index = ENV.fetch('NEW_INDEX')
	new_type = ENV.fetch('NEW_TYPE')
	size = ENV.fetch('SCAN_SIZE', 100)

	client = Elasticsearch::Client.new(hosts: hosts)
	unless client.indices.exists(index: new_index)

plcstevens / Results

Created January 6, 2015 11:06

	Rehearsal ---------------------------------------------
	any? 0.000000 0.000000 0.000000 ( 0.000885)
	all? 0.000000 0.000000 0.000000 ( 0.000279)
	min block 0.960000 0.000000 0.960000 ( 0.958517)
	------------------------------------ total: 0.960000sec

	user system total real
	any? 0.000000 0.000000 0.000000 ( 0.000886)
	all? 0.000000 0.000000 0.000000 ( 0.000297)
	min block 0.970000 0.000000 0.970000 ( 0.974703)

plcstevens / template.rb

Created January 6, 2015 10:51

Benchmark template

	require "benchmark"

	Benchmark.bm(10000) do \|x\|
	x.report("A") { }
	x.report("B") { }
	end

plcstevens / reevoomark_defined.js

Last active August 29, 2015 14:06

This is how we can allow users to call ReevooMark api actions from outside of our callbacks. Please note as this is all asynchronous, ReevooMark is not guaranteed to exist. Therefore this should only be used when the call to ReevooMark occurs some time after page load.

	(function() {
	var script = document.createElement('script');
	script.type = 'text/javascript';
	script.src = '//cdn.mark.reevoo.com/assets/reevoo_mark.js';
	var s = document.getElementById('reevoomark-loader');
	s.parentNode.insertBefore(script, s);
	})();

	afterReevooMarkLoaded = [function() {
	ReevooApi.load('YOUR_TRKREF', function(retailer) {

plcstevens / reevoomark_observing.js

Last active April 6, 2016 10:44

This is how a client can implement their own callbacks onto our badge actions.

	(function() {
	var script = document.createElement('script');
	script.type = 'text/javascript';
	script.src = 'http://cdn.mark.reevoo.com/assets/reevoo_mark.js';
	var s = document.getElementById('reevoomark-loader');
	s.parentNode.insertBefore(script, s);
	})();

	afterReevooMarkLoaded = [function(){
	ReevooApi.load('YOUR_TRKREF', function(retailer){

plcstevens / reevoomark2.js

Last active August 29, 2015 14:06

Possible implementation technique for future JavaScipt library. This would avoid issues with asynchronous vs synchronous method calls and also allow for a very verbose API that would be easily extendable.

	(function(url, name){
	(window.ReevooMarkObjects = window.ReevooMarkObjects \|\| []).concat([name]);

	window[name] = window[name] \|\| function(){
	(window[name].queue = window[name].queue \|\| []).push([arguments]);
	};

	var script = document.createElement("script");
	script.async = true;
	script.src = url;

plcstevens / no_pre_compile.rb

Last active August 29, 2015 14:06

Only pre-compile when necessary

	# set the locations that we will look for changed assets to determine whether to precompile
	set :assets_dependencies, %w(app/assets lib/assets vendor/assets Gemfile.lock config/routes.rb)

	# clear the previous precompile task
	Rake::Task["deploy:assets:precompile"].clear_actions
	class PrecompileRequired < StandardError; end

	namespace :deploy do
	namespace :assets do
	desc "Precompile assets"

Philip Stevens plcstevens