Series

Hands-on Ruby implementations of classic algorithms — graphs, trees, sorting, greedy methods, and spatial data structures. Read in order for a structured path from fundamentals to advanced topics.

1. Sorting Algorithms in Ruby
2. Search Algorithms in Ruby
3. Tree Algorithms in Ruby
4. Graph Algorithms in Ruby
5. Greedy Algorithms in Ruby

Practical Gang-of-Four style patterns expressed in idiomatic Ruby — creational, structural, and behavioral examples you can apply in real Rails and service codebases.

1. Design Patterns in Ruby: A Few Popular Patterns
2. Design Patterns in Ruby: Strategy, Decorator, Template Method, and Command Patterns
3. Design Patterns in Ruby: Proxy, Composite, State, Chain of Responsibility, and Iterator Patterns
4. Design Patterns in Ruby: Visitor, Memento, Mediator, Flyweight, and Builder Patterns
5. Design Patterns in Ruby: Prototype, Abstract Factory, Bridge, and Facade Patterns

Break problems into smaller subproblems, conquer recursively, and combine results — with Ruby code for merge sort, quicksort, and related techniques.

1. Divide and Conquer Algorithms
2. Some Algorithms Based on Divide and Conquer Principles in Ruby - Part 1
3. Some Algorithms Based on Divide and Conquer Principles in Ruby - Part 2
4. Some Algorithms Based on Divide and Conquer Principles in Ruby - Part 3

Short daily English practice posts — introductions, vocabulary, and workplace phrases aimed at developers improving professional communication.

1. English Day 1: Introduction
2. English Day 2: Oranges
3. English Day 3: Work Experiences
4. English Day 4: Stand-Up Meeting

A multi-part walkthrough of page caching in production web apps — concepts, Rails integration, and operational lessons from real deployments.

1. Page caching - Strategies for Web Performance Optimization
2. Page caching - Leveraging Page Caching with Varnish in Rails Applications
3. Page caching - Implementing Page Caching in a Rails Application with Redis
4. Page caching - Combining Page Caching in Rails with Nginx Memory Caching
5. Page caching - Maximizing Performance with HTTP Caching: A Comprehensive Guide

Notes and exercises from interview preparation — system design prompts, API design, and communication practice for technical roles.

1. Interview Learning: Design an API for Payment Gateway