diff --git a/scripts/src/link b/scripts/src/link
index 1cc1cc8c6..7e89bd637 100644
--- a/scripts/src/link
+++ b/scripts/src/link
@@ -598,6 +598,7 @@ https://news.mt.co.kr/mtview.php?no=2024061809265258954">현대오토에버, '
 - [개발자를 위한 구글 사용 팁](https://taegon.kim/archives/9747)
 - https://www.slideshare.net/slideshow/2018-datayanolja-moreeffectivewebcrawling/120335071
 - [UML Class Diagram Explained with Examples](https://blog.algomaster.io/p/uml-class-diagram-explained-with-examples)
+- [80+ LLD and Concurrency Problems](https://lldcoding.com/)
 - [Never* use Datagrams](https://quic.video/blog/never-use-datagrams/)
 - [컴퓨터 밑바닥의 비밀 - 1장](https://mingule.tistory.com/m/80)
 https://framagit.org/framasoft/framaspace/argos/