Modern Computer Science Concepts
30 modern computer science concepts worth knowing before your next interview.
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Ravishka Wijerathna ⚡️💎
Oct 27, 2026
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30 modern computer science concepts worth knowing before your next interview.
Data structures and algorithms, Big O, programming paradigms, computer architecture, operating systems, memory management, concurrency, networking, and compilers. This is the foundation. Skip it and everything else wobbles.
SQL and NoSQL, database internals, distributed systems, and data engineering. Knowing why an index speeds up a query, or what happens when two replicas disagree, goes a long way.
SOLID, DRY and KISS, design patterns, system design, API design (REST, GraphQL, gRPC), testing, and modern architecture like microservices, serverless, and event-driven systems.
Cloud, DevOps and CI/CD, Docker and Kubernetes.
Machine learning basics, LLMs and generative AI, and AI agents with tool calling. Hard to ignore these anymore.
Security, formal methods, information theory, graphics and GPU computing, blockchain. Nobody expects all five. Knowing even one well makes you stand out.
#ComputerScience #SoftwareEngineering #TechInterviews #Programming
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