jforge

Create or open a text source file in JupyterLab.
Right click in the text editor panel.
Click Create Console for Editor.
Select a kernel matched to the programming language you want to execute in the file.
Notice the Console panel that appears.
Highlight one or more lines back in the text editor you'd like to run.

Kafka Distributed Streaming Platform

Publish and Subscribe / Process / Store

Start Kafka

Kafka uses ZooKeeper as a distributed backend.

Start Zookeeper

Get the details to connect to your Nexus-managed npm repository

Note: Nexus group repositories (good example in this StackOverflow question) are out of this tutorial's scope. In any case, deployment to group repositories is currently still an open issue for Nexus 3 (and not intended ever to be implemented in Nexus 2). Thus, it is assumed that we'll push & pull to/from the same repository, and ignore the idea of groups hereon in.

Ask your sysadmin for a username & password allowing you to log into your organistation's Nexus Repository Manager.
Test the login credentials on the Nexus Repository manager at: http://localhost:8081/nexus/#view-repositories (localhost in our case is replaced by a static IP, and can only be connected to over VPN). If your organisation requires a VPN to connect to it, connect to that VPN before proceeding with this tutori

Here is a quick example using UIbuilder which is an alternative UI for Node-RED.

It demonstrates the use of a lightweight front-end library, MoonJS, which can be a lot faster and easier to work with than Node-RED's built-in Dashboard UI once you reach the point of needing to customise the UI beyond the standard capabilities of Dashboard.

This is a really quick demo of what you can do with uibuilder. MoonJS is a lightweight alternative to the likes of Angular (used by Dashboard), REACT, VueJS, etc. It is fast and really easy to use.

Here are the steps to set up (details given below):

Install MoonJS & uibuilder using npm

Story: Writing Scripts with Go

This is a story about how I tried to use Go for scripting. In this story, I’ll discuss the need for a Go script, how we would expect it to behave and the possible implementations; During the discussion I’ll deep dive to scripts, shells, and shebangs. Finally, we’ll discuss solutions that will make Go scripts work.

Why Go is good for scripting?

While python and bash are popular scripting languages, C, C++ and Java are not used for scripts at all, and some languages are somewhere in between.

	FROM armhf/debian:jessie

	RUN apt-get update && apt-get install -y \
	libssl-dev \
	logrotate \
	sudo \
	curl \
	jq \
	&& rm -rf /var/lib/apt/lists/*

	var AWS = require('aws-sdk')
	AWS.config.update({region: 'us-east-1'})
	const uuidV4 = require('uuid/v4')
	var translate = new AWS.Translate();
	var polly = new AWS.Polly();
	var s3 = new AWS.S3({
	params: {
	Bucket: 'YOURBUCKETNAME',
	}
	})

	#!/usr/bin/env node
	// Minimal example of loading a PEM certificate using pkijs (in node)

	// babel-polyfill needs to be loaded for pkijs
	// It uses webcrypto which needs browser shims
	require('babel-polyfill')

	const Pkijs = require('pkijs')
	const Asn1js = require('asn1js')
	const FS = require('fs')

	package main

	import (
	"os"
	"archive/tar"
	"log"
	"io"
	"compress/gzip"
	)