Victor Schröder schrodervictor

Importing/Indexing database (MySQL or SQL Server) in Solr using Data Import Handler

Install Solr

download and install Solr from http://lucene.apache.org/solr/.

you can access Solr admin from your browser: http://localhost:8983/solr/

use the port number used in installation.

Essential JavaScript Links

I no longer mantain this list. There are lots of other very comprehensive JavaScript link lists out there. Please see those, instead (Google "awesome JavaScript" for a start).

Enable the tracer on your xdebug.ini file (see the xdebug.ini file).
If you are gonna trace an http request, make sure your xdebug.trace_output_dir is writable by the webserver user (www-data).
Execute your script or your request. You can use produce_segmentation.php to test.
See the trace file(s) on your xdebug.trace_output_dir.

Installing Arch Linux with Full Disk Encryption

If you're aiming for a seamless Arch Linux installation in UEFI mode, follow along as this guide will walk you through the process step by step. We'll be using LUKS (Linux Unified Key Setup) and LVM (Logical Volume Manager) partitions on LUKS to achieve full disk encryption.

Note: I have updated this doc for UEFI mode. For those with BIOS/MBR systems, you can refer to the previous version, but keep in mind that it might be outdated and no longer accurate.

If you're only interested in installing Linux and not setting up dual boot with Windows, feel free to skip the Windows-related sections.

Securing traffic to upstream servers with client certificates

Info: https://www.nginx.com/resources/admin-guide/nginx-https-upstreams/

Creating and Signing Your Certs

Source: http://nategood.com/client-side-certificate-authentication-in-ngi

This is SSL, so you'll need an cert-key pair for you/the server, the api users/the client and a CA pair. You will be the CA in this case (usually a role played by VeriSign, thawte, GoDaddy, etc.), signing your client's certs. There are plenty of tutorials out there on creating and signing certificates, so I'll leave the details on this to someone else and just quickly show a sample here to give a complete tutorial. NOTE: This is just a quick sample of creating certs and not intended for production.

Falsehoods programmers believe about time

This is a compiled list of falsehoods programmers tend to believe about working with time.

Don't re-invent a date time library yourself. If you think you understand everything about time, you're probably doing it wrong.

Falsehoods

There are always 24 hours in a day.
February is always 28 days long.
Any 24-hour period will always begin and end in the same day (or week, or month).

	'use strict';

	var EventEmitter = require('events').EventEmitter;
	var httpMocks = require('node-mocks-http');

	module.exports = {
	createRequest: httpMocks.createRequest.bind(httpMocks),
	createResponse: function (opts) {
	opts = opts \|\| {};
	opts.eventEmitter = EventEmitter;

	#!/usr/bin/env node

	var fs = require('fs');
	var args = fs.readFileSync(process.argv[2], 'utf8');
	var changed = false;

	var jsonPath = null;
	var json = null;
	var keyValReplacementString = args.split(' ');
	keyValReplacementString.forEach(function(i){

	digraph architecture {
	rankdir=LR;

	// Storage - #303F9F (dark blue)
	node[fillcolor="#303F9F" style="filled" fontcolor="white"];
	database[label="DB"]; cache[label="Redis"];

	// Client-side Apps - #FFEB3B (yellow)
	node[fillcolor="#FFEB3B" style="filled" fontcolor="black"];
	front_end[label="Front-end App"]; extension[label="Browser Extension"];

	# Generate the private and public keys
	openssl ecparam -name secp256k1 -genkey -noout \| openssl ec -text -noout > key

	# Extract the public key and remove the EC prefix 0x04
	cat key \| grep pub -A 5 \| tail -n +2 \| tr -d '\n[:space:]:' \| sed 's/^04//' > pub

	# Extract the private key and remove the leading zero byte
	cat key \| grep priv -A 3 \| tail -n +2 \| tr -d '\n[:space:]:' \| sed 's/^00//' > priv

	# Generate the hash and take the address part