D. Naumov nezed

Getting Started with NPM (as a developer)

As easy as 1, 2, 3!

Updated:

Aug, 08, 2022 update config docs for npm 8+
Jul 27, 2021 add private scopes
Jul 22, 2021 add dist tags
Jun 20, 2021 update for --access=public
Sep 07, 2020 update docs for npm version

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

Better local require() paths for Node.js

Problem

When the directory structure of your Node.js application (not library!) has some depth, you end up with a lot of annoying relative paths in your require calls like:

const Article = require('../../../../app/models/article');

Those suck for maintenance and they're ugly.

Possible solutions

Moved to git-repository: https://github.com/denji/awesome-http-benchmark

Tools

Located in alphabetical order (not prefer)

ab – slow and single threaded, written in C
apib – most of the features of ApacheBench (ab), also designed as a more modern replacement, written in C
autocannon – fast HTTP/1.1 benchmarking tool written in Node.js
baloo – Expressive end-to-end HTTP API testing made easy, written in Go (golang)

http://thenewstack.io/monitoring-101-collecting-right-data/

What is a metric?

Metrics capture a value pertaining to your systems at a specific point in time.

Metrics are usually collected once per second, one per minute, or at another regular interval to monitor a system over time.

For different Metric Data Types and the metric names they produce see https://docs.datadoghq.com/developers/metrics/types/?tab=histogram#metric-types

Checking out pull requests in Bitbucket

/.git/config
[remote "origin"]
    url = ssh://[email protected]:7999/brikks/brikks.git
    fetch = +refs/heads/*:refs/remotes/origin/*
    fetch = +refs/pull-requests/*/from:refs/remotes/origin/pull-requests/*
    fetch = +refs/pull-requests/*/merge:refs/remotes/origin/pull-requests-merge/*

	#!/usr/bin/env python

	# Simple script for finding and counting the color pages in a PDF
	# Copyright (C) 2013-2019 Antonio Garcia-Dominguez
	# Licensed under the GPLv3
	#
	# This script is based on the following thread (thanks for the tip!):
	#
	# http://tex.stackexchange.com/questions/53493
	#

	class InstagramPrivateController < ApplicationController

	def initialize(username, password, photo, caption)
	@username = username
	@password = password
	@photo = photo
	@caption = caption

	@cookiepath = Tempfile.new('cookies').path
	@user_agent = generate_user_agent()

	const React = require('react');
	const connectToStores = require('flummox/connect');

	function connect(...args) {
	return function(target) {
	return connectToStores(target, ...args);
	}
	}