The DORA metrics (from the DevOps Research and Assessment program / Accelerate book) measure software delivery performance: Deployment Frequency (how often you ship), Lead Time for Changes (commit to production), Change Failure Rate (% of deployments causing a failure), and Time to Restore Service (how fast you recover from incidents). The first two measure throughput, the last two stability — and research shows elite teams excel at both simultaneously, debunking the myth that speed and stability trade off.
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What does lead time for changes measure?
Lead time for changes measures the elapsed time from when code is committed to when it is successfully running in production. It captures the efficiency of your entire delivery pipeline: review, CI, testing, staging, and deployment. Short lead times (elite teams: under a day) mean fast feedback, smaller and safer changes, and quicker value delivery. Long lead times indicate pipeline friction — slow tests, manual approvals, batching. It is distinct from cycle time (which may start at work-begin) by anchoring specifically on commit-to-production.
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What is the SPACE framework for developer productivity?
The SPACE framework (Forsgren et al.) was created to counter the misuse of single, gameable metrics like lines of code or commit counts. It argues developer productivity is multidimensional: Satisfaction and well-being, Performance (outcomes/quality), Activity (counts of actions), Communication and collaboration, and Efficiency and flow. The guidance is to measure across multiple dimensions and combine perceptual (survey) data with system data — never reducing productivity to one number, which inevitably gets gamed and harms morale.
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What is "cognitive load" in the context of developer experience?
Cognitive load is the amount of working memory and mental effort a task demands. In developer experience, high extraneous cognitive load — caused by having to understand too many systems, constant context switching, confusing tooling, and undocumented processes — directly harms productivity and satisfaction. Team Topologies argues teams should be sized and scoped so the systems they own fit within their cognitive capacity. Platform engineering and golden paths exist precisely to reduce the cognitive load on product teams by hiding infrastructure complexity behind self-serve abstractions.
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Why does measuring change failure rate alongside deployment frequency matter?
Measuring throughput (deployment frequency) without stability (change failure rate) is dangerous — you could ship constantly while breaking production constantly. The DORA insight is that elite teams achieve both: they deploy frequently and maintain low change failure rates, because small, frequent, well-tested changes are inherently safer than large, infrequent ones. Pairing the metrics prevents gaming: optimizing deploy frequency alone might encourage rushing, but the failure-rate guardrail keeps the focus on sustainable, safe velocity rather than reckless speed.
What does the "Developer Experience & DORA Metrics" vocabulary exercise cover?
This exercise tests real IT vocabulary related to developer experience & dora metrics through 5 multiple-choice questions, each built from realistic workplace sentences rather than abstract definitions.
Is this vocabulary exercise free to use?
Yes. Every exercise on CoderSlingo, including this one, is completely free — no account, sign-up, or payment required.
How many questions does this exercise have?
This exercise has 5 questions. Each one shows a real-world sentence or scenario with multiple-choice options and an explanation once you answer.
What happens after I answer a question?
You'll see immediate feedback showing whether your answer was correct, along with a short explanation of why — then a button to move to the next question, and a full results screen at the end.
Can I retry the exercise if I get questions wrong?
Yes. Once you reach the results screen, click "Try again" to reset your answers and go through the exercise from the start as many times as you like.
Do I need to create an account to take this exercise?
No account is needed. Your answers are scored in your browser during the session — nothing is saved to a server, so you can jump straight in.
Is my progress saved if I leave the page?
No — progress within an exercise resets if you navigate away or reload. Each exercise is short enough to complete in a few minutes in one sitting.
Are these vocabulary exercises connected to other topics?
Yes — this module shares real-world context with 9 other vocabulary modules. See "Related vocabulary" below to keep building a connected skill set.
How is this different from reading a glossary or blog article?
Exercises like this one are active recall drills — you have to choose the correct term or phrasing yourself, which builds retention faster than passively reading a definition.
Where can I find more vocabulary exercises?
Browse the full Vocabulary exercises hub for hundreds of modules covering Agile, DevOps, security, databases, architecture, and more — organised by IT role and skill.