PinnedEnhancing security with TLS for OpenSearch Cluster Using cert-managerfocus on core security principles like encryption-in-transit and least privilege, showing how to enable TLS for both the transport and httpMay 9, 2025May 9, 2025
LLM Fine-tuning by Prompt-based QLoRA on a Single A100 GPUThis is an article explaining how to fine-tune LLM just on A100 GPU card, optimizing knowledge about the dataset of ‘Three Kingdoms(삼국지)’Oct 31, 2025Oct 31, 2025
A Deeper Look into String Concatenation in Modern Java: From Inefficiency to OptimizationJava’s String class, while seemingly straightforward, operates with a highly optimized memory management system under the hood. For many…Aug 9, 2025Aug 9, 2025
Analyzer and Component Reuse in Lucene, Elasticsearch, and OpenSearchThis article details the multi-layered reuse mechanisms within Apache Lucene and how high-level search platforms like Elasticsearch and…Jul 29, 2025Jul 29, 2025
Fallback Mechanisms of Kubernetes ingress-nginx during TLS handshakes: A Case Study on OpenSearchLet’s briefly talk about how One-way TLS(Transport Layer Security) Handshake works.Apr 30, 2025Apr 30, 2025
(KOR) Deep Dive into Lucene beyond OpenSearch (feat. JVM, Translog, PageCache, Segment)Why OpenSearch devours Memory? There’s more hidden behind Indexing (from Translog to Segment)Dec 20, 2024Dec 20, 2024
(KOR) Enhancing security with TLS for OpenSearch Cluster Using cert-managercert-manager를 사용하면 Self-signed, Private CA, Public CA 방식으로 인증서와, 그 인증서를 base64 인코딩한 Secret 리소스까지 만들어준다.Nov 7, 2024Nov 7, 2024
ArgoCD 기반 OpenSearch 클러스터 구성 (feat. Kubernetes Operator)Operator를 통해 컨테이너 환경에서 OpenSearch 및 OpenSearch Dashboards의 배포를 자동화하고, 운영 관점에서의 편리한 Scale-in/out, Version 관리가 가능하다.Oct 4, 2024A response icon1Oct 4, 2024A response icon1
[Kafka] KafkaConnect 에러 사례 모음집 (트러블슈팅)1. org.apache.kafka.connect.errors.DataException: java.sql.SQLException: Numeric OverflowAug 26, 2024Aug 26, 2024
Hybrid Search(keyword+semantic) via Vector Embedding in OpenSearchOpenSearch에서 말하는 Neural Search란 일반적으로 텍스트와 그 텍스트를 벡터 임베딩한 값 모두 동일 index에 색인하고, 검색 시에 쿼리에 담긴 텍스트와의 유사도를 반환하는 검색 방식이다.Aug 16, 2024Aug 16, 2024
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