Dashboard Library Review2134 Progress Certificates

Computer Science Foundations

Programming Languages

JavaScript Fundamentals0/24

Core CS Theory

Data structures & algorithms0/23

OOP & design patterns0/23

Functional Programming Concepts0/20

Operating Systems Fundamentals0/20

Engineering Practice

Software Engineering Fundamentals0/20

Networking Fundamentals0/20

Linux & the Command Line0/20

Frontend Engineering

React & Next.js0/18

CSS & Modern Styling0/18

UI/UX for Developers0/12

Mobile Development0/12

Backend Engineering

Core Backend

Node.js & Backend JavaScript0/18

Databases & SQL0/16

Engineering Practice

Git & Version Control0/14

Testing & QA0/18

Security

Cryptography Fundamentals0/12

Auth, Authorization & Multi-Tenancy0/17

Web Security Fundamentals0/18

Application Security & Secure Coding0/12

Cloud, Infrastructure & DevOps

Cloud Platforms

Cloud Computing & Infrastructure0/19

Containers & Orchestration

Docker & Containers0/12

Delivery & Operations

CI/CD & Deployment Pipelines0/12

Observability & Monitoring0/12

Deployment Platforms

Domain Names, DNS & Subdomains0/12

Systems & Architecture

System design & architecture0/18

Distributed Systems Fundamentals0/12

Message Queues & Event-Driven Architecture0/12

Caching Strategies0/12

AI & Machine Learning

AI & ML Fundamentals0/12

AI Agents & LLM Integration0/17

Platform & Product Integrations

WhatsApp & Meta Platform Integrations0/19

Payments & Financial Systems0/12

Process, Career & Delivery

Agile & Project Management0/14

Interviewing & Career Growth0/12

Built by Mohamed Salem

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Dashboard Library Review2134 Progress Certs

System design & architecture

Trade-offs at scale — caching, queues, consistency, and how real systems actually fail.

18 lessons

Study 71 cards for this domain

Beginner

What is system design? Client-server basics and vocabularyBeginner4 min read·Not started HTTP and APIs — the basicsBeginner4 min read·Not started Vertical vs horizontal scaling — the basicsBeginner3 min read·Not started Databases 101 — SQL vs NoSQL, the basicsBeginner4 min read·Not started What a database index actually isBeginner3 min read·Not started DNS — how a domain name becomes a serverBeginner3 min read·Not started IP addresses and ports — the basicsBeginner3 min read·Not started

Intermediate

Caching — cache-aside, and the two hard problemsIntermediate3 min read·Not started Message queues — decoupling producers from consumersIntermediate2 min read·Not started Idempotency — why it matters for retries and paymentsIntermediate3 min read·Not started Load balancing — algorithms and health checksIntermediate3 min read·Not started Monolith vs. microservices — the actual trade-offIntermediate5 min read·Not started WebSockets and real-time communicationIntermediate4 min read·Not started API design and versioningIntermediate4 min read·Not started

Advanced

Rate limiting — the algorithms, and what they actually trade offAdvanced4 min read·Not started Database sharding — splitting data across machinesAdvanced4 min read·Not started The CAP theorem — the trade-off you can't engineer aroundAdvanced5 min read·Not started Consistent hashing — resharding without a full data migrationAdvanced5 min read·Not started