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How to create a todo list with Phoenix LiveView

Categories

Tags programming erlang functional-programming

Phoenix LiveView is a great solution for anyone who wants to get a real-time app out to the world quickly without spending a ton of time building out both frontend and backend. By Dennis Beatty.

The author provided video on youtube together with code on GitHub and detailed instructions in this tutorial.

The tutorial covers:

  • Set up a new project with Phoenix LiveView
  • Generate the Schema
  • Set up the page
  • Display the Todo List
  • Updating in Real-Time with PubSub

LiveView is awesome, but Phoenix PubSub is pretty amazing too. It was super simple for author to subscribe to events and publish those when we update our database, and that allowed them to get this all set up really easily. Excellent!

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It's on you: How to build an inclusive business

Categories

Tags management agile teams miscellaneous cloud

An interview with Atlasian head of diversity and belonging Aubrey Blanch about building an inclusive business. By Stephanie Palmer-Derrien.

The new Atlassian Team Playbook is touted as a “no bullshit guide to unleashing your team’s potential”, allowing businesses to analyse their people data on a team level.

We take a really data-informed social science approach to build what we think of as an equitable and balanced company, Blanche tells StartupSmart.

Atlassian uses a machine learning tool to remove gender-biased and racially biased language from its job ads.

The interview covers following:

  • Build an inclusive culture before you need to
  • Make an effort
  • Watch your language
  • Take responsibility

And one we liked: The fact is, you can hire underrepresented folks all you want, but if your culture isn’t supportive, you’re not going to keep them anyway. Nice one!

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Handling 'Failure at scale' in Azure Functions triggered by IoT Hub

Categories

Tags serverless apis web-development azure devops

An article by Stas(Stanislav) Lebedenko about how to tackle exceptions and re-run failed messages. One of the Serverless solution benefits is a performance at scale. As a result, you can get ‘Failure at scale’ if something goes wrong. Thus it’s crucial to introduce error handling for your Azure Functions project early.

The purpose of the dead-letter queue (DLQ) is to hold messages that cannot be delivered to any receiver, or messages that could not be processed. Link to Azure Service Bus queues docs.

His solution relies on:

  • Azure Storage Queue
  • Azure Function with input trigger for IoT Hub(Event Hub) messages endpoint and output trigger to Storage Queue
  • Notification alert triggered by Queue transaction count in 30 minutes
  • Azure Function for a replay of the messages stored in Storage Queue

The author also provides useful info about:

  • The dead letter queue or poison queue?
  • Error handling via Azure Storage Queue
  • Azure infrastructure and Functions
  • Notification setup

Links to further reading together with screen-grabs and code examples also provided. Good read!

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REST and Hypermedia and GraphQL and gRPC and Event-Driven

Categories

Tags apis web-development software-architecture restful

An essay on apievangelist.com about their drive to research API industry over the last couple of years in order to help people understand how they can invest in a diverse API toolbox. It should help you to develop the awareness they need to be successful in designing, developing, and delivering APIs at scale, for a variety of use cases.

Counteracting some of the more vendor focused storytelling in the space that works to confuse, distort, and shame folks for their approach to delivering APIs – providing a more pragmatic view of how we should doing APIs.

The article goes about:

  • REST is where you begin
  • Hypermedia reflects the web
  • Schema powered GraphQL
  • gRPC delivering performance
  • Event-driven approaches
  • Invest in your API Toolbox

gRPC excels at delivering digital resources at scale internally and in B2B environments. gRPC tends to take advantage of HTTP/2, and represents the evolution of the HTTP standard for many.

Doing APIs well takes experience. Being able to competently switch from technology to technology takes confidence, and an awareness of the strengths and weaknesses of each solution. Nice read!

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Simplicity in design: 4 ways to achieve simplicity in your designs

Categories

Tags ux web-development management miscellaneous

Euphemia Wong wrong this piece about how to learn ways to achieve simplicity in your designs and recognize why certain designs are overly complex. Simplicity is also one of the key reasons why some companies do better than their competitors.

What is simplicity? Simplicity is all the rage these days. It is a design philosophy that is championed by many successful companies and fans of those companies alike.

Simplicity in design isn’t just about the minimal colors you use or the whitespace you include, it’s about going deep into your user’s minds and using that understanding to design a product that rids itself of inconsequential elements and closes the gap between the user’s goals and the means to achieve those goals through your system.

Ways to achieve simplicity in your designs:

  • Maintain clarity: understand and design for your users’ main goals
  • Make use of automation: design for a minimum amount of conscious and cognitive effort
  • Limit options: design for a strong “information scent”
  • Reduce the gulf of execution: make your users see how your product can help them achieve their goals

It’s not easy to design for simplicity. It’s not supposed to be. Your job as a UX designer is to dig deep into the complexities of everything from user goals to system constraints in order to output a beautiful and easy to use design that will help users achieve their goals effortlessly. Nice one!

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Explainer: What is a quantum computer?

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Tags miscellaneous infosec learning machine-learning

This is the first in a series of explainers on quantum technology. How it works, why it’s so powerful, and where it’s likely to be most useful first. By Martin Giles.

A quantum computer harnesses some of the almost-mystical phenomena of quantum mechanics to deliver huge leaps forward in processing power. Quantum machines promise to outstrip even the most capable of today’s – and tomorrow’s – supercomputers.

The secret to a quantum computer’s power lies in its ability to generate and manipulate quantum bits, or qubits. The article explains:

  • What is a qubit?
  • What is superposition?
  • What is entanglement?
  • What is decoherence?
  • What is quantum supremacy?
  • Where is a quantum computer likely to be most useful first?

The machines are also great for optimization problems because they can crunch through vast numbers of potential solutions extremely fast. Great read!

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Why less is more is the secret to cloud-native computing

Categories

Tags cloud software-architecture miscellaneous infosec

Jason Bloomberg wrote this article about how it seems that the entire IT infrastructure landscape is advancing so quickly, it might as well be lava under our feet. It is imperative that we find some island, some core of stability, lest the shifting magma of innovation and disruption burn us to a crisp.

Cloud-native computing takes the best practices of cloud computing –- horizontal scalability, resilience, and end-user configurability, to name a few – and extends them to the entire IT environment.

He then describes what he considers such an island: cloud-native computing. Here is why:

  • Bringing the cloud to all of it
  • “Less” #1: Codeless
  • “Less” #2: Trustless
  • “Less” #3: Stateless

As applications scale up and down in a cloud-native environment, microservices appear and disappear on the order of milliseconds. The only way to configure an infrastructure to handle such dynamic behavior at scale is via a codeless approach. The only way to secure such application assets is via zero trust. And the only way such applications can keep track of anything and still scale is by managing state in an inherently stateless environment. Good read!

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How to read a WebPageTest waterfall chart

Categories

Tags web-development frontend performance

Matt Hobbs put together this guide on web page test waterfall charts. He pulled together many bits of information into a single blog post.

The article dives in and explains:

  • Basic layout of the waterfall chart user interface
  • Vertical lines
  • Common scenarios, including
    • DNS-prefetch
    • Preconnect
    • Prefetch
    • Preloading
  • HTTP/1.1 vs HTTP/2
  • Online Certificate Status Protocol (OCSP)
  • Firefox enhanced tracking protection

… and much more. We liked how he explained OCSP bad performance and how you should look into enabling OCSP stapling on your server. Nice one!

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Incorporating UX work into your agile backlog

Categories

Tags web-development ux miscellaneous how-to

In this article author describes three different backlog models which enable teams to keep track of UX work in their Agile processes. Each model comes with pros and cons. By Rachel Krause.

There is no definitive rulebook when it comes to Agile backlogs – every team may structure its backlog differently. At its core, this is a good thing: every team has its own way of working so a one-size-fits-all process isn’t practical.

The article then goes over:

  • Backlogs in Agile
  • Backlog structure
  • Unified backlog: Explicit UX and development items in the same backlog
  • Task-Based unified backlog: Role-Based work expressed as tasks within backlog items
  • Multiple Backlogs

The great thing about backlogs is that you’re able and required to be flexible. Don’t be afraid to mix and match different methods until you find something that works for your team.

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Here's what we learned about page speed

Categories

Tags web-development programming performance

Backlinko.com analyzed 5.2 million desktop and mobile pages and in this article they published what they learned about page speed.

The authors learn which factors impact page speed. First, they established worldwide benchmarks for Time To First Byte (TTFB), Visual Complete and Fully Loaded load time metrics. Then, they looked at how image compression, Content Delivery Networks (CDN) and hosting impact site loading speed.

Their data revealed some very interesting (and surprising) insights:

  • Average desktop Time to First Byte (TTFB) speed is 1.286 seconds on desktop and 2.594 seconds on mobile
  • On desktop, CDNs have the biggest impact on TTFB. However, on mobile devices, the number of HTML requests seems to affect TTFB the most
  • Larger pages take 318% longer to visually load compared to smaller pages
  • Light pages fully load 486% faster than large pages
  • Third-party scripts significantly slow down page loading speed
  • Using responsive images results in the best overall image loading performance. Use of WebP was significantly less effective at reducing image load times

… and much more in this article full of revealing facts. Great resource for anybody into web development!

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