Strengthening Testing through Mutation: A DevOps Engineer’s Experience

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I work as a DevOps engineer for a large public-facing application, which has around 90+ microservices (Java-based). Consistently, we are hit by scenarios that we’d discover in the field, which were not caught in any of our testing. Despite improving our test strategies and code coverage assessments, we were unable to assess the "strength" of our test cases.

We looked around for options and solutions that could help us to be more sure about our test cases and the code we develop. As a DevOps engineer, my responsibility was to identify options and trial them to fix this problem and include it as part of our automated build process.

Source de l’article sur DZONE

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HTTP and Scalable Software Systems

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If you think about the World Wide Web, it’s easy to imagine it as a single software system. Once you do, you realize it’s the largest software system the world has ever created — probably by hundreds of orders of magnitude. It contains trillions of lines of code, hundreds of millions of servers, and billions of clients, running thousands of different programming languages. Still, it works more or less as we expect it to work. So, what made it possible for humans to create such an enormous software system? The answer is simple: HTTP!

The HTTP protocol allows us to create perfect encapsulation. The client and the server don’t need to know anything about each other, besides the URL, HTTP verb, and what parameters to pass in and expect as output. This allows billions of clients to interact with each other, without knowing (almost) anything about each other. If you reduce it down to its basic components, it becomes painfully obvious that the following is a recipe for winning.

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Building a Recommendation System Using Deep Learning Models

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In this article, I am going to explain how we integrate some deep learning models, in order to make an outfit recommendation system. We want to build an outfit recommendation system. We used four deep learning models to get some important characteristics of the clothing used by the user.

The recommendation systems can be classified into 4 groups:

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Including Markdown Content in a Vue or Nuxt SPA

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Developers love to show off a solution they’ve come up with to solve a tricky problem (heck, I’m doing it right now). For that reason, you’ll probably create a developer blog at some point in your career to showcase your favorite hacks.

And, as a developer, you’ll no doubt irrationally build your blog from scratch rather than use a pre-made solution, because that’s just what we do!

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Application Portfolio Rationalization and R-Lane in the Cloud Era

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Take a look at these decision-making methods for cloud migration

During discussions with many of my colleagues, I realized the need for (a) clear demarcation between Application Portfolio Rationalization (APR) and R-Lane, (b) the association of R-Lane with APR, (c) right positioning of APR and R-Lane and (d) role of modernization in APR and R-Lane.

While all these topics spinning around rationalization, they differ only in when and where rationalization is taking place. Let us consider the following three scenarios to better understand these trending terminologies. 

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Why Use Smart Contracts to Build Blockchain Applications?

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One of the most crucial features of Blockchain Technology is its decentralized nature. This means that the information is shared by all the parties of the networks. Hence, it eliminates the need for middlemen or intermediaries to facilitate operations. This feature is particularly useful because it saves one from the possibilities of hacks and fraudulent activities. Blockchain Technology offers a feature-rich, fast, cheap, and efficient mode of transactions. Thus, most organizations in the government and banking sectors have started adopting this top-notch technology.

This post deals with the importance and the need for Smart Contracts to create Blockchain applications in the market. 

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How Bitcoin Processing Units Are Being Used For Mining Digital Currency

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It’s a famous fact that bitcoin mining hardware has changed by leaps and bounds lately due to the growth of new central processing units in the marketplace. The new machines may conduct Bitcoin processing at a faster rate when compared with the computers of yesteryear.

Furthermore, they consume less power. Field programming team array processors are connected with CPUs to boost their computing power. While selecting hardware for Bitcoin processing, ensure it includes a large hash rate that would deliver spectacular results to your users. According to experts, the rate of data processing is measured in mega hash rates each second, or GIGA hash speeds per second.

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Top 8 Weather APIs for 2020

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The climate is a hot issue, and weather forecasting technology is suddenly cool. The urgent need for innovative weather and environmental conditions forecasting solutions is obvious whether you believe in climate change or not.

In fact, the climate is not only the topic of discussion around the water cooler. There are businesses, entire industries in fact, where weather conditions have a direct impact on day-to-day business operations. Industries like logistics, aviation, competitive outdoor sports, public safety, mining, and agriculture (to name just a few) are directly impacted by the weather. For these industries, weather forecasting accuracy can mean the difference between ending a fiscal year in profit or loss.

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We Trust Blockchain Says the Card Payment Industry – But Why Still the Struggle

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Eliminate the middleman to boost security! A promise made by blockchain is already nailing the card payment industry. Ever since the emergence of Bitcoin in 2009, the number of blockchain wallets increased to approximately 42 million users in September end 2019, as per Statista.

Blockchain, the underlying technology is poised to disrupt every industry.

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The Easy Way to Write a Telegram Bot

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In this article, I will show how you can create an Echo Bot using Corvid by Wix. It’s quick, easy, and absolutely FREE.

Most modern messaging apps have the ability to write bots, and they work in a pretty similar way. So, in this post, I’ll show you an example only for Telegram Messenger. You will get the idea of how it might work with other messengers.

Source de l’article sur DZONE

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