System Design Codex
The best place to learn practical System Design with concepts and case studies
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- Jul 14, 2026
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Top System Design Performance Metrics (opens the original)
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When we talk about designing robust, scalable software systems, the conversation often revolves around architecture patterns, tools, and technologies.But at some point, we must ask: Is the system actually performing well?This is where performance metrics come in.Just like you’d monitor your health using blood pressure or heart rate, developers and architects use specific metrics to evaluate and improve their system designs. These metrics give a quantifiable way to measure performance, reliabilit
Essential Non Functional Requirements (opens the original)
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When designing and building software systems, developers often focus on what the system does—this is the functional part. But just as critical is how the system behaves under real-world conditions.That’s where non-functional requirements (NFRs) come into play.Non-functional requirements define the quality attributes of a system: its reliability, responsiveness, scalability, flexibility, and more. These aspects don’t deal with features directly but ensure the system delivers a robust experience.<
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