Spring

A note from integrating an external API in UniSchedule, where I chose between RestTemplate and WebClient based on Spring's direction, configuration flexibility, and the current MVC structure.

A record of looking again at a circular reference between ProductService and OptionService while implementing a gift API, instead of hiding it with @Lazy.

A note on why I introduced a PageRequestDto instead of exposing Spring Pageable directly, so that sort fields and page size rules could be controlled more clearly.

A comparison of Fetch Join, EntityGraph, and Batch Size while handling related data queries in a gift API.

A note from implementing a gift API in Kakao Tech Campus, where I had to decide whether to rely only on database constraints or check some rules in the application first.