I just record the way how we use a lot of the way to communicate each others on the HTTP.It might be really a lots. I record just the summary about them and the way how to use them at here. HttpURLCon
The concepts of JPA, Spring Data JPA, HibernateFirst time to study this, I just think they are same techniques but as you know, They aren’t same so I would like to explain about them briefly in here.
Use private keywordThe main topic of the singleton pattern is It has to block the access for create new instance from outside because It’s needed only one object.We often use the ‘private’ keyword for
ELK = Elasticsearch + Logstash + Kibana ELK 는 Elasticsearch + Logstash + Kibana 세개의 오픈 소스 프로젝트를 하나의 스택으로 쓰는 것 노드라는 걸 기반으로 데이터를 저장하고 한 데이터는 복사본, 원본 을 위해 여러개의 노드로 저장. 이 노드들이 유기적으로 연결되고 함으로써 확장성을 가진다고