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Learn with RV – Tech Blog

#testautomation #qa #programming #linux #devops

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Cleaner asserts in Grafana k6 load tests using expect

Razvan Vancea,
May 24, 2026May 24, 2026

Grafana k6 provides an expect() function through the k6-testing library. It lets you write readable assertions…

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AI: What Happens When an AI’s Context Window Gets Full?

Razvan Vancea,
May 12, 2026May 13, 2026

Large language models do not “remember” a conversation the way humans do. They work from…

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Upgrading Playwright package to latest version in simple steps

Razvan Vancea,
April 29, 2026April 29, 2026

In this quick article I will show you how to quickly upgrade your playwright npm…

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Oxfmt tutorial – the Prettier code formatter alternative, 30x faster

Razvan Vancea,
April 28, 2026April 29, 2026

The Oxidation Compiler is creating a suite of high-performance tools for JavaScript and TypeScript, written…

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Configuring testIdAttribute in Playwright

Razvan Vancea,
April 9, 2026April 9, 2026

When writing end-to-end tests with Playwright, selectors play a very important role in making your…

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Understanding p95 Percentiles in Load Testing (with k6 examples)

Razvan Vancea,
March 28, 2026May 24, 2026

When you start working with performance testing tools like k6, you’ll quickly notice metrics such…

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npm ci vs. npm install – what is the difference?

Razvan Vancea,
March 27, 2026March 27, 2026

If you have been around JavaScript projects for a while, you have probably used both…

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Understanding Race Conditions in Test Automation

Razvan Vancea,
March 12, 2026March 12, 2026

Lately, I’ve been hearing the term “race condition” more and more often – during conference…

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Understanding JS Garbage Collector – how Memory is managed

Razvan Vancea,
March 12, 2026March 12, 2026

Memory management is one of the most important responsibilities of any programming language runtime. There…

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Understanding /* vs /** Patterns

Razvan Vancea,
February 20, 2026February 20, 2026

In software development and test automation, of the most overlooked yet powerful skills is mastering…

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