The article explains how BeanFactory is a minimal, lazy‑loading container that only creates and caches beans, while ApplicationContext extends it with eager pre‑loading, full annotation, AOP, transaction, environment and event support, and outlines their respective use cases and pitfalls.
This article explains why executing many small database queries in a short time harms performance, shows how to detect the N+1 problem with monitoring and logs, and presents refactoring techniques such as eager loading, batch operations, aggregation, caching, and hand‑crafted SQL to dramatically improve speed, scalability, and code quality.
This article explains how Feign relies on Ribbon for remote calls, details Ribbon's load‑balancing mechanisms, various balancing rules, and demonstrates how enabling Ribbon's eager‑load mode can pre‑warm clients to avoid the latency of the first request.
This article explains Laravel Eloquent's eager loading techniques, demonstrating how to replace lazy-loaded N+1 queries with the with() method, preload multiple or nested relationships, select specific columns, apply constraints, and use lazy eager loading methods like load and loadMissing, all illustrated with PHP code examples.
