https://blog.i544c.com/Wed, 19 Aug 2026 21:30:00 +0900https://blog.i544c.com/firestore-deep-dive-part-2.html<p>Firestore는 용량을 미리 잡아둘 수 없어서 런칭 순간의 급증에 429로 응답합니다. split이 부하를 보고 생긴다는 가설을 외부 프로브의 p95로 검증하고, 100K ops/s까지 데운 실측과 그 과정에서 드러난 워밍업의 한계를 정리합니다.</p>Isaac ParkWed, 19 Aug 2026 21:30:00 +0900tag:blog.i544c.com,2026-08-19:/firestore-deep-dive-part-2.htmldatabasefirestorespannergcpload-testperformancehttps://blog.i544c.com/firestore-deep-dive-part-1.html<p>Firestore가 Megastore 위의 Datastore에서 출발해 Spanner 위로 다시 구현되기까지의 역사와, 문서 DB로서의 특성, 그리고 그 아래 Spanner의 키 공간·split·Paxos·TrueTime이 읽기와 쓰기 한 건에 어떻게 관여하는지를 정리합니다.</p>Isaac ParkWed, 19 Aug 2026 21:00:00 +0900tag:blog.i544c.com,2026-08-19:/firestore-deep-dive-part-1.htmldatabasefirestorespannergcpnosqldistributed-systemshttps://blog.i544c.com/opentelemetry-langfuse-bunsancujeog-siseutem-gucug.html<p>OpenTelemetry · Langfuse · ClickHouse 기반 LLM 서비스 분산 추적</p>박이삭Thu, 21 May 2026 14:00:00 +0900tag:blog.i544c.com,2026-05-21:/opentelemetry-langfuse-bunsancujeog-siseutem-gucug.htmlinfrabackendinfraobservabilityllmhttps://blog.i544c.com/mugeoun-sql-kweori-coejeoghwa-5co-300ms-gaeseongwajeong.html<p>관리자 목록 조회의 5초짜리 SQL 병목을 프로파일링으로 원인을 분해하고, 불필요한 JOIN·ORM 로딩·N+1 쿼리를 제거해 300ms대로 개선한 최적화 사례</p>Isaac ParkThu, 12 Mar 2026 16:52:00 +0900tag:blog.i544c.com,2026-03-12:/mugeoun-sql-kweori-coejeoghwa-5co-300ms-gaeseongwajeong.htmlmarkdownsqloptimizationprofilehttps://blog.i544c.com/maegbug-hwamyeon-jamgeum-weongyeog-jeeo-claude-code-muin-silhaeng-gaideu.html<p>MacBook을 잠금 상태로 두면서 Claude Code를 계속 실행하고, 스마트폰으로 원격 제어하는 방법을 caffeinate와 Remote Control로 구성하는 가이드.</p>Isaac ParkMon, 09 Mar 2026 19:00:00 +0900tag:blog.i544c.com,2026-03-09:/maegbug-hwamyeon-jamgeum-weongyeog-jeeo-claude-code-muin-silhaeng-gaideu.htmlagentaitoolsmacbookhttps://blog.i544c.com/telepresence-oss-daean-istiomtls-seobiseumesi-hwangyeongeseo-mirrordro-rokeol-gaebal-rupeu-guseonghagi.html<p>로컬개발환경 istio k8s클러스터 연결하는 툴 mirrord</p>박이삭Mon, 23 Feb 2026 17:15:00 +0900tag:blog.i544c.com,2026-02-23:/telepresence-oss-daean-istiomtls-seobiseumesi-hwangyeongeseo-mirrordro-rokeol-gaebal-rupeu-guseonghagi.htmldevelopmentKubernetesDev Toolhttps://blog.i544c.com/telepresence-oss-rokeol-gaebalhwangyeong-kubernetes-cluster-networke-butineun-bangbeob.html<p>로컬개발환경 k8s클러스터 연결하는 툴 Telepresence</p>박이삭Thu, 15 Jan 2026 19:01:00 +0900tag:blog.i544c.com,2026-01-15:/telepresence-oss-rokeol-gaebalhwangyeong-kubernetes-cluster-networke-butineun-bangbeob.htmldevopskubernetesk8sdnstunnelremote accessvpnhttps://blog.i544c.com/how-os-boots-up-part-1.html<p>OS bootup explained</p>박이삭Mon, 08 Sep 2025 11:59:00 +0900tag:blog.i544c.com,2025-09-08:/how-os-boots-up-part-1.htmlosossystemhttps://blog.i544c.com/pycon-korea-2025-balpyo.html<p>PyCon Korea 2025 발표</p>박이삭Fri, 22 Aug 2025 09:06:00 +0900tag:blog.i544c.com,2025-08-22:/pycon-korea-2025-balpyo.htmlpythonpythonoptimizationcpu pipelinecachejithttps://blog.i544c.com/unicode-byte-order-markbom.html<p>Unicode BOM</p>박이삭Mon, 28 Jul 2025 04:21:00 +0900tag:blog.i544c.com,2025-07-28:/unicode-byte-order-markbom.htmlbackendformatencodingunicodehttps://blog.i544c.com/mysql80-explain-explained.html<p>MySQL query optimization</p>박이삭Mon, 30 Jun 2025 13:15:00 +0900tag:blog.i544c.com,2025-06-30:/mysql80-explain-explained.htmlbackendmysqloptimizationbackenddatabasehttps://blog.i544c.com/budongsosujeomfloat-jeongmildowa-decimalbigintga-pilyohan-iyu.html<p>floating point and bigint, decimal</p>박이삭Mon, 19 May 2025 13:32:00 +0900tag:blog.i544c.com,2025-05-19:/budongsosujeomfloat-jeongmildowa-decimalbigintga-pilyohan-iyu.htmldatadata structurehttps://blog.i544c.com/django-migration-unittest-mic-teureobeulsyuting.html<p>migration using pytest</p>박이삭Thu, 03 Apr 2025 16:47:00 +0900tag:blog.i544c.com,2025-04-03:/django-migration-unittest-mic-teureobeulsyuting.htmlbackendbackenddatabasedjangomigrationunittestpytestpytest-djangohttps://blog.i544c.com/model-context-protocolmcp-sogae-gaenyeom-gisul-gujowa-hwalyong-sarye.html<p>Introduction to MCP</p>박이삭Mon, 24 Mar 2025 14:47:00 +0900tag:blog.i544c.com,2025-03-24:/model-context-protocolmcp-sogae-gaenyeom-gisul-gujowa-hwalyong-sarye.htmlaibackendllmhttps://blog.i544c.com/llm-embedding-vector-databaseyi-sogae.html<p>LLM embedding</p>박이삭Mon, 30 Dec 2024 13:10:00 +0900tag:blog.i544c.com,2024-12-30:/llm-embedding-vector-databaseyi-sogae.htmldatabasealgorithmdatabasehttps://blog.i544c.com/os-apiwa-overheadyi-ihae.html<p>OS API Overhead</p>박이삭Mon, 16 Dec 2024 13:52:00 +0900tag:blog.i544c.com,2024-12-16:/os-apiwa-overheadyi-ihae.htmlperformancebackendperformancehttps://blog.i544c.com/context-switch-peuroseseu-seuredeu-mic-obeohedeu-ihaehagi.html<p>Context Switch</p>박이삭Mon, 18 Nov 2024 11:33:00 +0900tag:blog.i544c.com,2024-11-18:/context-switch-peuroseseu-seuredeu-mic-obeohedeu-ihaehagi.htmlperformancebackendperformanceprofilingpythonhttps://blog.i544c.com/branchless-programming.html<p>Branchless programming</p>박이삭Mon, 21 Oct 2024 14:19:00 +0900tag:blog.i544c.com,2024-10-21:/branchless-programming.htmlperformancealgorithmbackendperformancehttps://blog.i544c.com/cache-prefetchinggwa-sequential-processingyi-jangjeom.html<p>cache prefeching &amp; sequential processing</p>박이삭Mon, 07 Oct 2024 14:56:00 +0900tag:blog.i544c.com,2024-10-07:/cache-prefetchinggwa-sequential-processingyi-jangjeom.html기술스택backenddata structureprofilingpythonhttps://blog.i544c.com/loki-sogae-mic-rogeusiseutem-gucug.html<p>Loki, log system</p>박이삭Thu, 08 Aug 2024 14:56:00 +0900tag:blog.i544c.com,2024-08-08:/loki-sogae-mic-rogeusiseutem-gucug.htmlinfrabackendinfralog