All Posts

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.

How I compared Page and Slice after reviewing the cost of automatic count queries in list APIs.

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

A note from designing a gift API, where I had to decide whether delete-related values should be sent in the request body, query parameters, or path variables.

A record of comparing UUIDv4, ULID, and UUIDv7 while considering whether to use UUIDs as identifiers and how they differ in index performance and ordering behavior.