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Alexander Azarov alaz

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@jboner
jboner / latency.txt
Last active May 6, 2024 07:06
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@walkerjeffd
walkerjeffd / Synology-Diskstation-Git.md
Last active April 27, 2024 15:39
Instructions for setting up git server on Synology Diskstation

Configure Synology NAS as Git Server

Instructions for setting up a git server on a Synology NAS with Diskstation. Specifically, I am using a DS414 with DSM 5.0.

Set Up User and Folder

  • Create user gituser via Diskstation interface (with File Station and WebDAV privilages)
  • Add new shared folder called git (located at /volume1/git) with read/write access for gituser and admin. This folder will hold all the repos.
  • Install Git Server package via Diskstation
@bishboria
bishboria / springer-free-maths-books.md
Last active April 25, 2024 06:27
Springer made a bunch of books available for free, these were the direct links
@adamloving
adamloving / temporary-email-address-domains
Last active April 24, 2024 14:20
A list of domains for disposable and temporary email addresses. Useful for filtering your email list to increase open rates (sending email to these domains likely will not be opened).
0-mail.com
0815.ru
0clickemail.com
0wnd.net
0wnd.org
10minutemail.com
20minutemail.com
2prong.com
30minutemail.com
3d-painting.com
@mikhailov
mikhailov / 0. nginx_setup.sh
Last active April 2, 2024 14:57
NGINX+SPDY with Unicorn. True Zero-Downtime unless migrations. Best practices.
# Nginx+Unicorn best-practices congifuration guide. Heartbleed fixed.
# We use latest stable nginx with fresh **openssl**, **zlib** and **pcre** dependencies.
# Some extra handy modules to use: --with-http_stub_status_module --with-http_gzip_static_module
#
# Deployment structure
#
# SERVER:
# /etc/init.d/nginx (1. nginx)
# /home/app/public_html/app_production/current (Capistrano directory)
#
@etienne-martin
etienne-martin / facebook-messenger-useragents.txt
Created September 1, 2017 04:22
A list of user agents from facebook messenger
Mozilla/5.0 (iPad; CPU OS 10_1_1 like Mac OS X) AppleWebKit/602.2.14 (KHTML, like Gecko) Mobile/14B100 [FBAN/MessengerForiOS;FBAV/122.0.0.40.69;FBBV/61279955;FBDV/iPad4,1;FBMD/iPad;FBSN/iOS;FBSV/10.1.1;FBSS/2;FBCR/;FBID/tablet;FBLC/vi_VN;FBOP/5;FBRV/0]
Mozilla/5.0 (iPad; CPU OS 10_2 like Mac OS X) AppleWebKit/602.3.12 (KHTML, like Gecko) Mobile/14C92 [FBAN/MessengerForiOS;FBAV/100.1.0.36.68;FBBV/46154306;FBRV/0;FBDV/iPad4,1;FBMD/iPad;FBSN/iOS;FBSV/10.2;FBSS/2;FBCR/;FBID/tablet;FBLC/en_US;FBOP/5]
Mozilla/5.0 (iPad; CPU OS 10_2_1 like Mac OS X) AppleWebKit/602.4.6 (KHTML, like Gecko) Mobile/14D27 [FBAN/MessengerForiOS;FBAV/100.1.0.36.68;FBBV/46154306;FBRV/0;FBDV/iPad5,3;FBMD/iPad;FBSN/iOS;FBSV/10.2.1;FBSS/2;FBCR/;FBID/tablet;FBLC/en_US;FBOP/5]
Mozilla/5.0 (iPad; CPU OS 9_3_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Mobile/13E238 [FBAN/MessengerForiOS;FBAV/112.0.0.36.70;FBBV/54364624;FBDV/iPad4,4;FBMD/iPad;FBSN/iPhone OS;FBSV/9.3.1;FBSS/2;FBCR/;FBID/tablet;FBLC/en_US;FBOP/5;FBRV/0]
Mozilla/5.0 (iP
@youngbrioche
youngbrioche / images_helper.rb
Last active February 8, 2024 08:15
Responsive images helper using srcset in Rails
module ImagesHelper
# Acts as a thin wrapper for image_tag and generates an srcset attribute for regular image tags
# for usage with responsive images polyfills like picturefill.js, supports asset pipeline path helpers.
#
# image_set_tag 'pic_1980.jpg', { 'pic_640.jpg' => '640w', 'pic_1024.jpg' => '1024w', 'pic_1980.jpg' => '1980w' }, sizes: '100vw', class: 'my-image'
#
# => <img src="/assets/ants_1980.jpg" srcset="/assets/pic_640.jpg 640w, /assets/pic_1024.jpg 1024w, /assets/pic_1980.jpg 1980w" sizes="100vw" class="my-image">
#
def image_set_tag(source, srcset = {}, options = {})
srcset = srcset.map { |src, size| "#{path_to_image(src)} #{size}" }.join(', ')
@pocotan001
pocotan001 / commit-emoji.md
Last active February 3, 2024 07:01
List of emoji for git commits. - https://github.com/atom/atom/blob/master/CONTRIBUTING.md#git-commit-messages
  • 🎨 when improving the format/structure of the code
  • 🚀 when improving performance
  • ✏️ when writing docs
  • 💡 new idea
  • 🚧 work in progress
  • ➕ when adding feature
  • ➖ when removing feature
  • 🔈 when adding logging
  • 🔇 when reducing logging
  • 🐛 when fixing a bug
@tobyhede
tobyhede / postsql.sql
Created May 17, 2012 03:08
PostgreSQL as JSON Document Store
-- PostgreSQL 9.2 beta (for the new JSON datatype)
-- You can actually use an earlier version and a TEXT type too
-- PL/V8 http://code.google.com/p/plv8js/wiki/PLV8
-- Inspired by
-- http://people.planetpostgresql.org/andrew/index.php?/archives/249-Using-PLV8-to-index-JSON.html
-- http://ssql-pgaustin.herokuapp.com/#1
-- JSON Types need to be mapped into corresponding PG types
--
@josephwecker
josephwecker / new_bashrc.sh
Created August 11, 2012 04:36
Replace .bashrc, .bash_profile, .profile, etc. with something much more clean, consistent, and meaningful. Now a repo: https://github.com/josephwecker/bashrc_dispatch
#!/bin/bash
# License: Public Domain.
# Author: Joseph Wecker, 2012
#
# -- DEPRICATED --
# This gist is slow and is missing .bashrc_once
# Use the one in the repo instead! https://github.com/josephwecker/bashrc_dispatch
# (Thanks gioele)
#
# Are you tired of trying to remember what .bashrc does vs .bash_profile vs .profile?