Computer Science Foundation

Core concepts that underpin all software development

Big O Notation

Time/space complexity analysis

Arrays & Hash Tables

Fundamental data structures

Linked Lists & Trees

Pointer-based structures

Sorting & Searching

Classic algorithm patterns

Scalability Patterns

Load balancing, caching, sharding

Database Design

Normalization, indexing, replication

API Design

REST, GraphQL, gRPC patterns

Security Fundamentals

Authentication, authorization, encryption

HTTP & Web Protocols

Request/response, status codes, headers

TCP/IP Stack

Network layers and protocols

DNS & Domain System

Name resolution and routing

Network Security

SSL/TLS, firewalls, VPNs

SQL Fundamentals

Queries, joins, transactions

Database Design

Schema design, relationships

Performance Optimization

Indexing, query planning

NoSQL Patterns

Document, key-value, graph databases