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Lessons (4)

• What Is Software Architecture?

  … You gain… You often pay with… --- --- Scalability (microservices) Simplicity, consistency, operating cost Performance (caching) Freshness of data, complexity …

• Monolith vs Microservices

  … crash everything A failing service can be contained ✅ Simplicity ✅ One codebase, easy to debug ❌ Distributed system complexity Calls …

• Scaling, Load Balancing & Rate Limiting

  … Horizontal (out) --- --- --- How Bigger CPU / RAM More servers Simplicity ✅ No code changes Needs stateless design Limit Hardware ceiling …

• Sorting Algorithms

  … Different algorithms trade simplicity , speed and memory . ![How the main sorting algorithms compare](/img/dsa/sorting-compare.svg …