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Node News Wednesday, June 27

Build a Twelve-Factor Node.js App with Docker

  • In this course we will take a simple Node.js app that connects to a MongoDB database and uses an Express web server, and learn how to setup a full software development deployment process as well as how to properly Dockerize the app.
  • Well step through setting up proper version control techniques, managing configuring within the environment, setting up proper build/deploy/run processes, and all with abiding by Docker best practices.
  • Well also make sure our deployment is setup for scale, and have consistent development practices in place for reliable app deployments.

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Build a Twelve-Factor Node.js App with Docker

Node v10 is Here – Feature Breakdown!

  • It is a best practice to have an edge proxy in front of your Node server, so you can expose port 80 and 443 as you dont want your Node process to run as superuser and this way you can setup HTTP push and TLS termination outside your server code….
  • On the other hand, Node.js – being a server framework – came with a module system called CommonJS baked in from the very beginning.
  • The problem is that the two module systems are not compatible so the Modules Team had to find a proper solution so JavaScript modules could be built in a platform agnostic way and could be used both in Node and in browsers.
  • So you can change your code to the following when you migrate to Node v10: – – To find out which specific error code you need to use, check the documentation – – You can read more about error codes here – – Node.js v8 introduced to easily wrap functions…
  • Before Node v8, native modules had to directly depend on the V8 / NAN Apis.

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Node v10 is Here – Feature Breakdown! | @RisingStack

Credential Registration for Cryptographic Authentication with Node.js and MongoDB – Pomcor

  • The server challenge used in the registration process is assigned to the property of the user model instance, and will be stored in the field of the user document when the model instance is saved.
  • While describing the login process in Part 1, all I needed to say about is that it contains the finite field cryptography (FFC) domain parameters (p,q,g) used by the application for computing and verifying DSA signatures.
  • The current version of PJCL can generate domain parameters with lengths (L, N) = (2048, 256) and (L, N) = (3072, 256), which provide nominal security strengths of 112 and 128 bits respectively according to Table 2 of SP 800-57 Part 1 Revision 4.
  • Lines 57 assign the values of the view variables , and to corresponding script variables, thus conveying server entropy and the registration challenge to the browser along with the username.
  • The current version of PJCL provides two RBG flavors, which use hash functions SHA-256 and SHA-384, and thereby allow for 128 and 192 bits of security strength respectively according to Table 3 of SP 800-57 Part 1 Revision 4.

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Credential Registration for Cryptographic Authentication with Node.js and MongoDB – Pomcor

End-to-end testing Single Page Apps and Node.js APIs with Cucumber.js and Puppeteer

  • Here is how the Cucumber feature file might be at this stage: – The Cucumber scenario describes the steps from the beginning to the end, and are written in a fashion that would allow anyone to be able to read them and understand what is going on.
  • We would then install Cucumber as a development dependency in the application, by typing this into the command line: – npm i cucumber -DWith Cucumber installed, we can now use it to read in the feature file inside of the features folder, parse the steps, and print out code that…
  • feature file extension in the features folder – Look for files that contain step definition functions – Look for a hooks.js file in the features folder – Look for a world.js file in the features folder – Look for any step definition functions that are in the step_definitions folder -…
  • It will look something like this: – The next time that you run npx cucumber-js, you will see that those step definitions are being matched: – Youll now see from the output that Cucumber has matched the steps in the feature file to the steps that we put in the…
  • We are now in a position to start writing code for our step definition files which will execute when we run Cucumber, such as writing code that would trigger doing things inside a web browser.

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End-to-end testing Single Page Apps and Node.js APIs with Cucumber.js and Puppeteer

Creating Gauge Charts With The JustGage JavaScript Library

  • See the Pen JustGage Chart Static Demo by Danny Englishby (@DanEnglishby) on CodePen.0 – – Some notes on the options that are used in the above examples script.
  • Using the above snippets, you can see what it will look like in the Pen below – – See the Pen JustGage Charts With Pointers Static Demo by Danny Englishby (@DanEnglishby) on CodePen.0 – – From the Pen displayed here, you can instantly see how dynamic and adjustable these charts…
  • Heres the CodePen so you can see it in action – – See the Pen JustGage Donut Charts With Pointers Static Demo by Danny Englishby (@DanEnglishby) on CodePen.0 – – Now, lets have some real fun, let us dynamically change the values of the gauges and watch them glide up…
  • Using the previous example snippets, we can add the following JavaScript – – The above additional script will set an interval every five seconds and refresh each chart on the page.
  • See the Pen JustGage Donut Charts Updating Values Demo by Danny Englishby (@DanEnglishby) on CodePen.0 – – I hope this article has got you excited with thoughts going through your mind of what you can do with them!

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Creating Gauge Charts With The JustGage JavaScript Library

Write GraphQL APIs on Node with MongoDB – Bits and Pieces

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Write GraphQL APIs on Node with MongoDB – Bits and Pieces

How to build powerful REST APIs blazingly fast with Node.js

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How to build powerful REST APIs blazingly fast with Node.js

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10 Selection Python Machine Learning Library

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10 Selection Python Machine Learning Library

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IssueHunt

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