Ruby on Rails
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Coding
Theory
Quiz
Background Jobs
ActiveJob Retry With Exponential Backoff
Mid
Resilient CSV Import Job
Mid
Idempotent Payment Job
Senior
Idempotent CSV Inventory Import Job
Senior
Models Associations
Self-Referential Manager Association
Junior
Order Status Enum With Scopes
Junior
Doctors and Patients via
Appointments
Junior
Polymorphic Tagging With Trending Scope
Mid
Polymorphic
Commentable
Association
Mid
Extract Shared Logic into a
Concern
Mid
Polymorphic Notes Concern
Mid
Single Table Inheritance for Vehicles
Mid
Auth Security
Secured Concern With
before_action
Junior
Magic Link Login Flow
Mid
JWT Bearer Authentication for API
Mid
Automatic Tenant Query Scoping
Senior
Encrypt a Searchable SSN Field
Senior
Performance Database Optimization
Fix N+1 Queries in
Posts
Index
Mid
Keyset Pagination for
Posts
Index
Mid
Eliminate Nested N+1 With Counter Cache
Senior
Middleware Rate Limiting
Rack Middleware for Request Timing
Mid
Per-User Hourly Rate Limiter
Mid
Per-Request Session With
around_action
Senior
Endpoints Routing Serialization
Namespaced API::V1::Products JSON Controller
Mid
Nested Comments Blog API
Mid
Permission-Based Serializer Attribute
Mid
Centralized API Error Handling
Mid
Header-Based API Versioning Concern
Senior
File Handling Streaming
Streaming CSV Export Endpoint
Senior
Transactions Concurrency
Atomic Money Transfer in
Account
Model
Mid
Atomic User Signup Service Object
Mid
Pessimistic Locking For Inventory Decrement
Mid
Transactional
CheckoutService
Orchestration
Senior
Optimistic Locking With
lock_version
Senior
Rails Patterns Practices
Plain Ruby
UserPresenter
Decorator
Junior
Async Order Confirmation Mailer
Junior
Reservation Overlap Validator
Mid
Reusable Soft-Delete Concern
Mid
Extract a
CreateOrder
Service Object
Mid
Fragment Caching a Dashboard Widget
Mid
Normalize
JSONB
Metadata Into
Attributes
Table
Mid
Searchable
Module With Chainable Scopes
Mid
Signed Webhook Endpoint With Background Job
Mid
Nested User Create With Strong Params
Mid
Order Form Object With
ActiveModel
Mid
Custom
match_json_schema
RSpec Matcher
Senior
Top 139 Ruby on Rails Interview Questions And Answers 2025 | TechPrep