Episode
Course 37 - Building Web Apps with Ruby On Rails | Episode 17:Mastering Versioning and Pagination
- Podcast
- CyberCode Academy
- Published
- Jun 30, 2026
- Duration seconds
- 1038
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Summary
In this lesson, you’ll learn about: API pagination, versioning strategies, and building scalable Rails APIs1. Why Pagination Is EssentialUsing Ruby on Rails APIs:🔹 Problem: Returning large datasets (thousands of records) Slow responses + heavy database load 🔹 Solution: Break data into pages (chunks) 👉 Key Insight Pagination improves performance, speed, and user experience2. How Pagination Works (Limit & Offset)🔹 Core idea: limit → how many records per page offset → where to start 🔹 Example:LIMIT 10 OFFSET 20 👉 Meaning: Skip first 20 records Return next 10 👉 Key Insight Pagination is just controlled slicing of data3. Pagination in Rails🔹 Basic example:@users = User.limit(10).offset(20) 🔹 With params:@users = User.limit(params[:limit]).offset(params[:offset]) 👉 Key Insight You can fully control pagination from the client4. Using Pagination Gems🔹 Popular tools: will_paginate Kaminari 🔹 Example (Kaminari):@users = User.page(params[:page]).per(10) 👉 Key Insight Gems simplify pagination logic and add helpers5. Benefits of Pagination🔹 Advantages: Faster database queries Reduced memory usage Better frontend performance 👉 Key Insight Small responses = faster APIs6. Introduction to API Versioning🔹 Problem: APIs evolve over time Changes can break old clients 🔹 Solution: Maintain multiple API versions 👉 Key Insight Versioning protects backward compatibility7. Content Negotiation (Accept Header)🔹 Client request:Accept: application/vnd.myapp.v1+json 🔹 Server behavior: Detect version Return matching response 👉 Key Insight Client specifies the version, server adapts8. Versioning with Namespaces🔹 Structure:/app/controllers/v1/users_controller.rb /app/controllers/v2/users_controller.rb 🔹 Example:module V1 class UsersController < ApplicationController end end 👉 Key Insight Each ve…