2021

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What is observability? Not just logs, metrics and traces

Dynatrace

Dynatrace news. As dynamic systems architectures increase in complexity and scale, IT teams face mounting pressure to track and respond to conditions and issues across their multi-cloud environments. As a result, IT operations, DevOps , and SRE teams are all looking for greater observability into these increasingly diverse and complex computing environments.

Metrics 363
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Evolution of search engines architecture - Algolia New Search Architecture Part 1

High Scalability

What would a totally new search engine architecture look like? Who better than Julien Lemoine , Co-founder & CTO of Algolia , to describe what the future of search will look like. This is the first article in a series. Search engines, and more generally, information retrieval systems, play a central role in almost all of today’s technical stacks.

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Top Automation Programming Languages of 2021

DZone

Introduction. In today’s highly competitive world, software development and automation play a significant role in creating robust software applications for businesses. Additionally, emerging technologies like artificial intelligence and blockchain have given a competitive edge to enterprises. For gaining maximum benefits out of automation testing , testers require hands-on experience in a minimum of one automation programming language.

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How Netflix uses eBPF flow logs at scale for network insight

The Netflix TechBlog

By Alok Tiagi , Hariharan Ananthakrishnan , Ivan Porto Carrero and Keerti Lakshminarayan Netflix has developed a network observability sidecar called Flow Exporter that uses eBPF tracepoints to capture TCP flows at near real time. At much less than 1% of CPU and memory on the instance, this highly performant sidecar provides flow data at scale for network insight.

Network 327
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Auditing PostgreSQL Using pgAudit

Scalegrid

Auditing in information technology (IT) is a process of examining an organization’s IT infrastructure to ensure compliance with the requirements imposed by recognized standards or established policies. Data protection rules, such as the new GDPR regulations, are becoming increasingly stringent to protect user data, so it’s important that your database audits are set up properly […].

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Measuring Network Performance in Mobile Safari

CSS Wizardry

So far this year, all but one of my clients have been concerned about Google’s upcoming Web Vitals update. The client who’s bucking the trend is great, not least because it’s given me something a little different to focus on—they’re more interested in how their site fares on iOS. What makes this particularly fun for me is that iOS Safari is a completely different ballgame to Chrome, and not something many people tend to focus on.

Network 271
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Fighting Fragility With Property-Based Testing

DZone

However long you work in software, you always feel late to the party. You encounter some seemingly cutting-edge new tool only to learn it has been around for decades, sometimes inspired by research papers from 1970. Still, you can’t keep up with everything and have a life. Property-based testing (PBT) is such an established technology and it deserves more attention.

Testing 346

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Client-Side Perf Testing Using Lighthouse CI With Puppeteer

DZone

Whenever we need to do performance testing, mostly it is the APIs that come to mind. Testing the performance of an application by putting load on APIs or on servers and checking out various metrics or parameters falls under server-side performance testing.

Testing 336
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Instrumenting Our Frontend Test Suite (.And Fixing What We Found)

DZone

Adding Instrumentation to Jest. Here at Sentry, we like to dogfood our product as much as possible. Sometimes, it results in unusual applications of our product and sometimes these unusual applications pay off in a meaningful way. In this blog post, we’ll examine one such case where we use the Sentry JavaScript SDK to instrument Jest (which runs our frontend test suite) and how we addressed the issues that we found.

Testing 335
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Five Things to Know Before Learning JMeter

DZone

If you are reading this blog post, most probably you are planning or already planned or just getting started with Apache JMeter. Learning any performance testing tool could be challenging. Sometimes the technical documentation looks abstract, and the learning curve could be steep. In this blog post, I am going to list out five things to know before learning JMeter. 1.

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Top 10 Low-Code App Development Best Practices to Follow

DZone

Low-code is the present and future of software development. The low-code market is expected to increase from its $10.3 billion market value back in 2019 to $187 billion by 2030 as more companies see the benefits of adopting the platform for their business needs. This is due to the growing need to either accelerate or finish their digital transformation.

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10 Rules To Integrate Third-Party Scripts

DZone

Introduction. Third-party scripts can cause negative load-time effects. Why is this an issue? Well, in Google’s view, a poorly-optimized page should not rank highly. Instead, search results should favor pages with fundamental design strengths—including JavaScript minification, rapid execution time, and render-friendly scripting. In reflection of this belief, Google has planned the gradual release of a major update to its search algorithm that is scheduled for June through August of 2021.

Google 324
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23 Node.js Best Practices For Automation Testing

DZone

If you are in the world of software development, you must be aware of Node.js. From Amazon to LinkedIn, a plethora of major websites use Node.js. Powered by JavaScript, Node.js can run on a server, and a majority of devs use it for enterprise applications. As they consider it a very respectable language due to the power it provides them to work with.

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Evaluating JS in The Browser for A Low Code Product

DZone

I work at Appsmith , an open-source low code platform for developers to build internal tools and workflows. At Appsmith, our developer users define business logic by writing any JS code in between {{ }} dynamic bindings almost anywhere in the app. They can use this while creating SQL queries, APIs, or triggering actions. This functionality lets you control how your app behaves with the least amount of configuration.

Code 316
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What Can I Do if a Stack Overflow Occurs in a Quick App?

DZone

When content obtained through $element('id') is assigned to a member variable, a stack overflow ( RangeError: Maximum call stack size exceeded ) may occur and the program will crash. If member variable references exist for a DOM, and a member variable changes, a stack overflow will also occur. The sample code is as follows: JavaScript. {{ stateText }}. " data-lang="text/javascript"> <template> <div id="content"> <input type="button" class="button" @click="onTestClick" value="

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Measure SLOs with Nobl9 and Dynatrace

Dynatrace

Dynatrace news. Companies are evolving to become customer-centric by adopting service level objectives (SLOs) to understand customer needs better. Teams are using concepts from site reliability engineering to create SLO metrics that measure the impact to their customers and leverage error budgets to balance innovation and reliability. It can be challenging to cut through the massive volume of telemetry data and quickly understand the impact on your business and customers.

Metrics 315
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Kubernetes vs Docker: What’s the difference?

Dynatrace

Dynatrace news. If cloud-native technologies and containers are on your radar, you’ve likely encountered Docker and Kubernetes and might be wondering how they relate to each other. In a nutshell, they are complementary and, in part, overlapping technologies to create, manage, and operate containers. Here are the main differences between Kubernetes vs.

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Everything You Need To Know About Stress Testing Your Software

DZone

Stress testing is a type of testing that verifies the reliability and stability of software applications. The goal of this kind of testing is to measure the error handling capabilities of the software to ensure that it does not crash under extremely heavy load conditions.

Software 315
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Monitoring Web Servers Should Never Be Complex

DZone

Introduction. If you run several web servers in your organization or even public web servers on the internet, you need some kind of monitoring. If your servers go down for some reason, this may not be funny for your colleagues, customer, and even for yourself. For that reason, we use monitoring tools. And there are a lot of monitoring tools available providing all kinds of features and concepts.

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Surveying the Tides of Cloud-Native and Open Source Observability

DZone

We can plausibly say the enterprise development market turned the tide on cloud-native development in 2020, as most net-new software and serious overhaul projects started moving toward microservices architectures, with Kubernetes as the preferred platform. According to the 2020 DevOps Pulse survey of more than a thousand DevOps practitioners from mostly mid-to-large sized development and IT Ops shops, 56% of respondents store more than half their infrastructure in the cloud, while 42% store 75%

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Scaling indexing and search - Algolia New Search Architecture Part 2

High Scalability

What would a totally new search engine architecture look like? Who better than Julien Lemoine , Co-founder & CTO of Algolia , to describe what the future of search will look like. This is the second article in a series. Here's Part 1. Search engines need to support fast scaling for both Read and Write operations. Rapid scaling is essential in most use cases.

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What's New in Selenium 4?

DZone

Selenium has gone through a tremendous evolution since its introduction and that’s the reason today it is the most popular and powerful automation testing tool. The newly released Selenium 4 is creating a lot of buzz and the complete testing community is looking forward to exploring its updated features. Before we dive into Selenium 4, let’s have a brief introduction to its previous versions.

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How to Save Time While Debugging

DZone

In this article from our small series for junior developers, we will focus on how to save time while debugging and what are the best practices of senior developers when fixing the errors. The Stripe’s study from 2018 says that developers spend over 41% of their time on maintaining and debugging the code. Imagine, out of 20 working days in a month, a week and a half of time does not add value to the business.

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Benchmark (YCSB) numbers for Redis, MongoDB, Couchbase2, Yugabyte and BangDB

High Scalability

This is guest post by Sachin Sinha who is passionate about data, analytics and machine learning at scale. Author & founder of BangDB. This article is to simply report the YCSB bench test results in detail for five NoSQL databases namely Redis, MongoDB, Couchbase, Yugabyte and BangDB and compare the result side by side. I have used latest versions for each NoSQL DB and have followed the recommendations to run all the databases in optimized conditions.

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Remote Workstations for the Discerning Artists

The Netflix TechBlog

By Michelle Brenner Netflix is poised to become the world’s most prolific producer of visual effects and original animated content. To meet that demand, we need to attract the world’s best artistic talent. Artists like to work at places where they can create groundbreaking entertainment instead of worrying about getting access to the software or source files they need.

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Dynatrace leverages new AWS Lambda extensions for seamless end-to-end observability

Dynatrace

Dynatrace news. AWS Lambda is the fastest growing technology for serverless workloads and helps developers innovate faster. It removes the burden of managing underlying infrastructure and is broadly adopted for cloud-native application environments. But serverless functions don’t exist in a vacuum. It’s critical that you understand how they impact your customer-facing web applications, mobile apps, or APIs and how they interact with other functions, services, and classic technology stacks.

Lambda 305
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The Ultimate JSON Library: JSON.simple vs. GSON vs. Jackson vs. JSONP

DZone

JSON is the accepted standard these days for transmitting data between servers and web applications. We often don’t think about the JSON libraries we use, but there are some differences between them. JSON is often used to transport and parse big files. This is a scenario that is common in data processing applications running in Hadoop or Spark clusters.

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Grow Professionally as a Backend Developer

DZone

We are continuing with our interview series ( previously we had interviewed Diego Ojeda – Android Lead at Apiumhub and Serhii Zabolennyi – the QA Automation engineer at Apiumhub ) and today we have a Backend interview with Javier Gomez – backend developer at Apiumhub. In this interview, Javier gives advice for junior developers who are hoping to grow professionally as backend developers and shares his programming style, his favorite books, and how he deals with the unexpected as a backend develo

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Logging Best Practices

DZone

What is going on? Why it is not working like that? This is not expected behavior :(. Sounds familiar?

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AWS serverless services: Exploring your options

Dynatrace

Dynatrace news. For many companies, the journey to modern cloud applications starts with serverless. While these serverless services provide strong business benefits due to their flexible on-demand usage and pricing model, they also introduce new complexities for observability. Amazon Web Services (AWS), offers a wide range of serverless solutions. To get a better understanding of AWS serverless, we’ll first explore the basics of serverless architectures, review AWS serverless offerings, a

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Dynatrace accelerates the convergence of observability and security with the acquisition of SpectX

Dynatrace

Dynatrace news. The post Dynatrace accelerates the convergence of observability and security with the acquisition of SpectX appeared first on Dynatrace blog.

Cloud 58
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My Funny Habit: Code Review for Solo Projects

DZone

I have a funny habit. Well, I guess it’s a funny habit. I never thought of it as funny. Then people started pointing it out to me, and asking why I did such a funny thing.

Code 290
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How to Be an Engineering Leader: A letter to my past self

DZone

Everyone has their own definition of true leadership. What I didn't understand at the start of my leadership journey was that each of us is a leader. Regardless of intent, we influence and impact our communities, industries, workplaces, and relationships. Yet, often we don't understand the importance or impact of simply being present. So I wanted to write a message to anyone looking to grow into engineering leadership.

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4 Software QA Metrics To Enhance Dev Quality and Speed

DZone

Introduction. Today, the demand for software is higher than ever. Lines of code govern almost everything we do in our day-to-day activities. The way we buy, the way we sell, even the way we communicate. In 2019, according to Evans Data Corporation, there were 23.9 million developers worldwide. In an attempt to hold their place within the market, developers are having to speed their process up whilst delivering products of ever-increasing quality.

Speed 290
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HTTP Toolkit for Performance Engineers

DZone

In this blog post, we are going to deep-dive into the HTTP Toolkit and its features. As performance engineers, it is our responsibility to learn various tools and technologies. Based on the issue, you need to leverage the right tool to fix the problems, just like plumbers. Let us see HTTP Toolkit for Performance Engineers. What is HTTP Toolkit? It is an open-source tool to debug, test, intercept HTTP(S) requests.

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Continuous integration and continuous delivery (CI/CD): How it enhances DevOps and continuous deployment

Dynatrace

Dynatrace news. The surge in demand for digital services since 2020 is a trend that is here to stay and only expected to accelerate. To compete, organizations have to achieve both speed and reliability when bringing new products and services to market. To meet this demand, organizations are adopting DevOps practices , such as continuous integration and continuous delivery, and the related practice of continuous deployment, referred to collectively as CI/CD.

DevOps 281
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Test Plan vs. Test Strategy: What's the Difference?

DZone

In the process of testing a software application, test plans and test strategies are quite crucial. A strong test plan and strategy will always prevent errors in the application. As software testers, we should be aware of these 2 phrases, as they are critical in testing software applications. We will learn about Test Plans and Test Strategies in this article.

Strategy 278