Fundamentals of API Design and Contracts


Diagram showing an API contract connecting a provider and consumer with versioned requests and responses.

API design fundamentals for contracts, compatibility, and reliability, so integrations stay predictable as systems evolve.

Fundamentals of Naming


Diagram showing naming fundamentals, including clarity, consistency, context, conventions, and discoverability, interconnected in a workflow.

Understand why naming matters in software: how clear names improve readability, reduce bugs, and make code easier to understand, maintain, and modify over time.

Fundamentals of Software Maintainability


Diagram showing software maintainability fundamentals, including code quality, technical debt, refactoring, documentation, testing, and architecture, interconnected in a workflow.

Understand why software maintainability matters: how code quality, technical debt, refactoring, and design patterns create systems that are easier to modify, debug, and extend over time.

Fundamentals of Software Caching


Diagram showing requests flowing through cache hits and misses, with freshness checks and eviction.

Software caching explained: why caches speed up systems, where they fail, and how to think about freshness, consistency, and cache misses.

Fundamentals of CI/CD and Release Engineering


Diagram showing CI/CD workflow from code commit through automated testing to deployment

CI/CD and release engineering fundamentals: automation, feedback loops, deployment strategies, and why continuous integration prevents integration hell.

Fundamentals of Software Availability


Diagram showing availability workflow from redundancy through health checks to graceful degradation

Software availability explained: uptime metrics, redundancy patterns, health checks, and graceful degradation for keeping systems accessible.

Fundamental Algorithmic Patterns


Algorithmic patterns reference: two pointers, sliding window, dynamic programming, and 30+ more. Learn to spot patterns and solve problems faster.

How Algorithmic Patterns Work


Flow showing how algorithmic patterns relate, combine, and guide practice.

Algorithmic patterns explained: why patterns work, how patterns combine, and how to practice recognition without memorizing solutions.

Fundamentals of Computer Processing


Conceptual diagram comparing CPUs, GPUs, TPUs, and specialized processors and how they map to different workloads.

CPU vs GPU vs TPU: learn how processing architectures differ, when to use each, and how latency, throughput, and data movement shape performance.

Fundamental Data Structures


Conceptual diagram showing arrays, hash maps, sets, trees, graphs, and how they organize data differently.

Data structures guide: arrays, hash maps, sets, stacks, queues, trees, graphs. Types, properties, when to use in Python, JavaScript, Java, C++, Go, Rust.

Fundamentals of Data Structures


Master data structure fundamentals: arrays, hash maps, trees, and graphs. Learn how structure choices shape algorithm performance, reliability, and developer sanity.

Fundamentals of Algorithms


Master algorithm fundamentals: data structures, Big O notation, and runtime complexity. Learn how algorithmic thinking helps build fast, reliable software and prevent production incidents.