Introduction Spring data JPA provides many ways to deal with entities including query methods and custom JPQL queries. However, sometimes we need a more programmatic approach: for example Criteria API or QueryDSL. Spring Data JPA Specification provides a convenient and sophisticated manner to build dynamic SQL where clauses. By adding some extra logic and considering some pitfalls, we are capable of offering API consumers a zero-effort generic mechanism for filtering entities.

Implementing custom jpa soft deletes because sometimes there are business requirements to not permanently delete data from the database.

A little things but important when uploading files through REST template. It should send the filename in the correct format.

Digital image processing is the use of a digital computer to process digital images through an algorithm. As a subcategory or field of digital signal processing, digital image processing has many advantages over analog image processing.

Object-Relational Mapping (ORM) is a technique that lets you query and manipulate data from a database using an object-oriented paradigm.

MinIO is a High Performance Object Storage released under GNU Affero General Public License v3.0. It is API compatible with Amazon S3 cloud storage service. Use MinIO to build high performance infrastructure for machine learning, analytics and application data workloads.