What is Backend Development? The Complete Beginner's Guide
Understand what backend development really is — servers, APIs, databases, authentication, and how all the pieces fit together to power every app you use.
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Spring Boot Redis Cache: Complete Guide with @Cacheable & Spring Data Redis
Master high-performance Redis caching in Spring Boot 3 & Java 21 using Spring Data Redis. Covers @Cacheable, TTL, custom RedisConfig, Docker, and cache eviction.
GPT-6 Astra Explained: Features, Pricing, Use Cases, and How It Compares
A comprehensive developer guide to OpenAI's GPT-6 Astra. Explore technical specs, 1.05M context window, API pricing, benchmarks, computer-use features, and GPT-5.6 Sol comparison.
System Design: How to Design a Scalable URL Shortener (TinyURL) — Step-by-Step Architecture Guide
Master the classic system design interview question. Learn capacity estimation, Base62 encoding, Key Generation Service (KGS), Redis caching, database sharding, and 301 vs 302 redirects.
The Complete System Design Roadmap: A Step-by-Step Guide from Beginner to Advanced
A linear, five-phase system design roadmap for developers. Master networking, data storage, distributed systems, reliability, and interview execution.
Spring Boot File Upload and Download REST API – Step-by-Step Guide
Step-by-step tutorial to build file upload and download endpoints in Spring Boot. Covers MultipartFile, file validation, storage service, and streaming downloads.
Spring Boot Pagination and Sorting — Complete Guide
Learn spring boot pagination and sorting with Java 21, Spring Boot 3.x, PostgreSQL, Gradle, Spring Data JPA, Pageable, Sort, validation, and production practices.