Lucas N. Munhoz lnmunhoz

Optimizing postgresql table for more than 100K inserts per second

Create UNLOGGED table. This reduces the amount of data written to persistent storage by up to 2x.
Set WITH (autovacuum_enabled=false) on the table. This saves CPU time and IO bandwidth on useless vacuuming of the table (since we never DELETE or UPDATE the table).
Insert rows with COPY FROM STDIN. This is the fastest possible approach to insert rows into table.
Minimize the number of indexes in the table, since they slow down inserts. Usually an index on time timestamp with time zone is enough.
Add synchronous_commit = off to postgresql.conf.
Use table inheritance for fast removal of old data:

Experimental Safe JavaScript Navigation

Implemented using ES6 Proxies and Symbols

The purpose of this function is to provide a way to avoid deep nested conditionals when traversing a hierarchy of objects. Some languages use an operator such as '?.' to perform this capability. This is sometimes called safe navigation or null conditional operators.

You can somewhat think of this as how a xpath select works. If any nodes along the path are not found, your result is simply not found without throwing an exception and without needing to check each individual node to see if it exists.

Suggestions for improvements welcome!

Pointing a GoDaddy domain to a Heroku app

https://devcenter.heroku.com/articles/custom-domains http://thenomadicfreelancer.blogspot.com/2012/08/pointing-godaddy-domain-to-your-heroku.html

1) Custom Subdomains

For each custom subdomain use domains:add in the Terminal.

Jekyll & Liquid Cheatsheet

A list of the most common functionalities in Jekyll (Liquid). You can use Jekyll with GitHub Pages, just make sure you are using the proper version.

Running

Running a local server for testing purposes:

Default

Powerlevel10k

Expose IIS or IISExpress running in a Parallels Windows 7/8 VM to your OS X host

Rename your virtual machine

In your Windows 7/8 VM, go to Control Panel > System > Advanced system settings > Computer Name and click Change. Name this whatever you like, e.g. windows. Restart your VM.

Add an ACL rule

Open CMD or Powershell as administrator. Add a URL ACL entry for your new name on the port of your choice, e.g.
netsh http add urlacl url=http://windows:8080/ user=everyone

	# Sublime package NVM node path configuration
	# Save this file in:
	# ~/Library/Application\ Support/Sublime\ Text\ 3/Packages/node_env.py
	import os

	os.environ["PATH"] = "/Users/YOUR_USERNAME/.nvm/v0.10.26/bin:/Users/cranemes/.nvm/v0.10.26/lib:/Users/YOUR_USERNAME/bin:/usr/local/sbin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
	print("PATH=" + os.environ["PATH"])

	var gulp = require('gulp'),
	concat = require('gulp-concat'),
	plumber = require('gulp-plumber'),
	server = require('tiny-lr')(),
	refresh = require('gulp-livereload'),
	mocha = require('gulp-mocha'),
	stylus = require('gulp-stylus'),
	notify = require('gulp-notify'),
	nodemon = require('gulp-nodemon'),
	jshint = require('gulp-jshint'),

	// Future versions of Hyper may add additional config options,
	// which will not automatically be merged into this file.
	// See https://hyper.is#cfg for all currently supported options.

	module.exports = {
	config: {
	// default font size in pixels for all tabs
	fontSize: 14,

	// font family with optional fallbacks