SpringDeveloper - Spring Tips
    https://www.youtube.com/playlist?list=PLgGXSWYM2FpPw8rV0tZoMiJYSCiLhPnOc

2021
https://spring.io/blog/2021/01/27/ymnnalft-the-spring-utils-classes
2019
https://habr.com/ru/post/472994/
https://www.toptal.com/spring/top-10-most-common-spring-framework-mistakes
    https://habr.com/ru/company/otus/blog/465063/
    https://habr.com/ru/company/otus/blog/464429/