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@jimothyGator
jimothyGator / sidekiq.rake
Last active August 9, 2016 10:40
Strano init.d script and Rake task. Runs Strano with Puma. Adapted from init.d script for Gitlab. https://github.com/joelmoss/strano/
# place in lib/tasks/
namespace :sidekiq do
desc "Strano | Stop sidekiq"
task :stop do
system "bundle exec sidekiqctl stop #{pidfile}"
end
desc "Strano | Start sidekiq"
task :start do
@buzztaiki
buzztaiki / gjs-io-sample.js
Created December 16, 2011 20:18
gjs-io-sample.js
const GLib = imports.gi.GLib;
const Gio = imports.gi.Gio;
let [res, out, err, status] = GLib.spawn_command_line_sync('ls -la');
print(out);
let [res, out] = GLib.spawn_command_line_sync('ls -la');
print(out);
let [res, out] = GLib.spawn_sync(null, ['/bin/ls', '-la'], null, 0, null);
@pvdb
pvdb / process_rss.rb
Last active December 14, 2022 10:50
Get real memory (resident set) used by current Ruby process
#
# This first version should work on Mac OS X and Linux, but it spawns a process
#
# http://stackoverflow.com/questions/7220896/
# https://github.com/rdp/os/blob/master/lib/os.rb#L127
# http://www.ruby-doc.org/core-2.0/Process.html
#
# A better - but more complicated - way to achieve the same is documented here:
#
# https://build.betterup.com/tracking-a-processs-memory-usage-in-ruby/
@henrik
henrik / hash_deep_diff.rb
Created July 14, 2009 08:38
Recursively diff two Ruby hashes.
# Recursively diff two hashes, showing only the differing values.
# By Henrik Nyh <http://henrik.nyh.se> 2009-07-14 under the MIT license.
#
# Example:
#
# a = {
# "same" => "same",
# "diff" => "a",
# "only a" => "a",
# "nest" => {
@jakeonrails
jakeonrails / prepare-commit-message
Last active October 4, 2023 06:57
prepare-commit-message that requires a JIRA ID and adds it if the branch name contains one
#!/usr/bin/env ruby
# Git Prepare Commit Message Hook Script
#
# Location: <repository>/.git/hooks/prepare-commit-msg
#
# This script will automatically add the correct
# JIRA ISSUE ID to the end of each commit message
# When the branch ID starts with the JIRA ISSUE ID.
# It can be overridden if specified in the message.
/*!
* jQuery TextChange Plugin
* http://www.zurb.com/playground/jquery-text-change-custom-event
*
* Copyright 2010, ZURB
* Released under the MIT License
*/
(function ($) {
$.event.special.textchange = {
@chanks
chanks / gist:7585810
Last active February 29, 2024 03:50
Turning PostgreSQL into a queue serving 10,000 jobs per second

Turning PostgreSQL into a queue serving 10,000 jobs per second

RDBMS-based job queues have been criticized recently for being unable to handle heavy loads. And they deserve it, to some extent, because the queries used to safely lock a job have been pretty hairy. SELECT FOR UPDATE followed by an UPDATE works fine at first, but then you add more workers, and each is trying to SELECT FOR UPDATE the same row (and maybe throwing NOWAIT in there, then catching the errors and retrying), and things slow down.

On top of that, they have to actually update the row to mark it as locked, so the rest of your workers are sitting there waiting while one of them propagates its lock to disk (and the disks of however many servers you're replicating to). QueueClassic got some mileage out of the novel idea of randomly picking a row near the front of the queue to lock, but I can't still seem to get more than an an extra few hundred jobs per second out of it under heavy load.

So, many developers have started going straight t

@bastman
bastman / docker-cleanup-resources.md
Created March 31, 2016 05:55
docker cleanup guide: containers, images, volumes, networks

Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...

delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

@huyng
huyng / reflect.py
Created February 7, 2011 17:57
A simple echo server to inspect http web requests
#!/usr/bin/env python
# Reflects the requests from HTTP methods GET, POST, PUT, and DELETE
# Written by Nathan Hamiel (2010)
from BaseHTTPServer import HTTPServer, BaseHTTPRequestHandler
from optparse import OptionParser
class RequestHandler(BaseHTTPRequestHandler):
def do_GET(self):