How-To Guides
This category contains step-by-step implementation tutorials for specific development tasks and workflows.
Each guide includes:
- Task overview and prerequisites
- Step-by-step instructions
- Code examples with explanations
- Configuration details
- Verification steps
How-to guides cover API integration, authentication, deployment workflows, CI/CD pipelines, testing strategies, and development tool configuration across various backend technologies.
How to Get Started with Vector Databases: Embeddings, Similarity Search, and RAG
Introduction to vector databases for semantic search. Covers embeddings, similarity metrics, chunking strategies, metadata filtering, and RAG pipeline basics.
How to Use the OpenAI API: Prompt Design, Streaming, and Cost Optimization
Master OpenAI API integration with best practices for prompt design, streaming responses, retry logic, error handling, and cost optimization.
How to Use Service Objects in Rails to Keep Controllers Thin
Implement service objects in Rails to extract business logic from controllers and models. Covers naming conventions, folder structure, and testing patterns.
How to Structure a Production FastAPI Project
Learn the recommended project structure for production FastAPI applications. Covers routers, services, models, dependency injection, and testing.
How to Implement JWT Authentication: Tokens, Refresh, and Security
Implement JWT authentication with access and refresh tokens. Covers token structure, login flow, security concerns, and best practices for API authentication.
How to Implement API Versioning: URL vs Header Strategies
Compare API versioning strategies — URL path, header-based, query parameter. Learn when to deprecate versions and how to migrate clients smoothly.
How to Master PostgreSQL Indexing: B-Tree, Composite, and Partial Indexes
Learn PostgreSQL indexing with B-tree, composite, and partial indexes. Use EXPLAIN ANALYZE to verify query plans and avoid common indexing pitfalls.
How to Dockerize a FastAPI Application with Uvicorn
Containerize a FastAPI application with Docker. Covers multi-stage builds, Uvicorn configuration, environment variables, and health checks.
How to Dockerize a Rails Application with PostgreSQL and Redis
Step-by-step guide to containerize a Ruby on Rails application with PostgreSQL and Redis using Docker and docker-compose. Production-ready setup included.
Implementing Rate Limiting with Redis
Step-by-step guide to implement token bucket rate limiting using Redis
How to Set Up GitHub Actions for Automatic Testing
Step-by-step guide to implementing automated testing in your GitHub repository using GitHub Actions CI/CD.