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2023

2022

08 Nov 9 Password Storage Best Practices
13 Sep TIL
30 Aug Concurrency in Go
09 Aug gRPC vs REST
27 Jul Passing Slice To Parameter
19 Jul scala 코드예제
19 Jul mac에서 pdf를 img로 변환하기
15 Jun Azure TIL
28 May Trouble Shooting(Go)
26 May Trouble Shooting(Terraform)
25 May NAT
23 May Networking
20 May 보험
25 Apr Zookeeper가 KRaft로 대체된 이유
18 Apr Modulo Arithmatic
15 Apr 전월세 계약정리
29 Mar Testing Github Action in local
29 Mar Style Checker, Formatter
24 Mar Parallel stages with Buildkit
24 Mar Go Runtime
10 Mar Flink Architecture
10 Mar Branch vs Tag
10 Feb Hard Delete vs Soft Delete
10 Feb Intellij
10 Feb Debezium
07 Feb Vertical Pod autoscaling
27 Jan S3 Connector의 Exactly Once
23 Jan HBase 개요
16 Jan 실시간 Prometheus To Snowflake 파이프라인 구축
14 Jan [Snowflake] Queries
14 Jan Kafka 동작원리
14 Jan MSK
05 Jan HPA by Kafka consumerlag
05 Jan Useful Queries
05 Jan Custom Metrics,External Metrics
05 Jan Kafka에서 Key의 역할
05 Jan Kafka Rebalancing

2021

20 Dec asyncio
19 Dec Local Kafka Setup
19 Dec [Python] trouble shooting
19 Dec Kafka Transaction
19 Dec [Python] Syntax
09 Dec MERGE
09 Dec Prometheus
08 Dec Chart Hooks
08 Dec Fernet Key
07 Dec Airflow ci image 리팩토링
22 Nov Memory Management in Python
21 Nov Trouble Shooting(Docker)
21 Nov Trouble shooting(Fast API)
21 Nov Thanos
21 Nov Module vs Package vs Library vs Framework
14 Nov PyPy
14 Nov GIL
14 Nov Concurrency in Python
14 Nov Testing
14 Nov Trouble shooting log for snowflake
14 Nov External table
14 Nov Web terminology
04 Nov PyCharm
01 Nov Resource Hooks
30 Oct [MySQL]Commands
24 Oct Setting manual review for github action
17 Oct Trouble shooting log(Linux)
17 Oct pip option
17 Oct Trouble shooting log(Airflow)
17 Oct DinD vs DooD
05 Oct command(MongoDB)
02 Oct push option(force-with-lease vs --force)
02 Oct Day1
27 Sep Liveness
25 Sep CORS setting
25 Sep CORS
25 Sep Setting Window keyboard on Mac
25 Sep 예비군 관련
18 Sep ELS/DLS
18 Sep time deposit(정기예금)
18 Sep 용어
18 Sep 연금저축계좌
18 Sep IRP
16 Sep vs code 개발환경 세팅
15 Sep On Premises Software vs Cloud
14 Sep custom error page 띄우기
12 Sep throws clause
12 Sep 확정일자
12 Sep CMA
11 Sep Amazon RDS
09 Sep CloudFront
08 Sep Trouble Shooting(Kubernetes)
06 Sep Git Autolink reference
06 Sep SmartGit Hosting Provider 설정하기
04 Sep Atlantis
02 Sep helm dependency
02 Sep Service Principal List
02 Sep Assume Role
02 Sep Trouble Shooting(AWS)
30 Aug ECS
30 Aug IOPS and Throughput
30 Aug PySpark과 Scala 코드를 실행하기 위한 단일 이미지 사용기
30 Aug Dockerfile에서Container 환경변수 수정하기
29 Aug Idiom
24 Aug Adding jar or package to Spylon Kernel
23 Aug Trouble Shooting(Spark)
22 Aug Reset
22 Aug Git guide from fork to pr
17 Aug Namespace vs Label
17 Aug kubernetes command
16 Aug Init Containers
16 Aug Jupyter Notebook에 hive-site.xml 마운트하기
16 Aug Python Command
16 Aug virtual environment
14 Aug Third Party Application에게 권한 부여하기
13 Aug Conda vs Pip
11 Aug Symlink(Symbolic Link)
11 Aug Wheel File Type
10 Aug AWS CLI
07 Aug Fetch,Pull,Rebase
07 Aug WORKDIR
07 Aug RUN CMD vs ENTRYPOINT
04 Aug Authorization
03 Aug ConfigMap
01 Aug 개발자가 갖춰야 할 능력(출처 : 백기선님 Youtube)
29 Jul Multi Stage Build에서 ARG 사용하기
25 Jul AWS에서 EC2 자원해제하기
24 Jul Introduction
23 Jul Permissions
23 Jul Helm Chart
22 Jul VPCs and subnets
22 Jul Terraform Introduction
22 Jul Deployment
22 Jul ReplicaSet
22 Jul Operator
20 Jul Amazon Resource Names(ARN)
20 Jul IAM
20 Jul Ingress
20 Jul Service
20 Jul Proxy Server, Gateway
20 Jul Amazon EC2
20 Jul Amazon VPC
17 Jul Krafton 온보딩 키트 리뷰
16 Jun [Effective SQL] item1 : 모든 테이블이 PK를 가지고 있는지 검증하라.
28 May Default Method
28 May Binary Search 문제 corner case
27 May [Leetcode - LRU Cache] Priority Queue에서 값을 업데이트 할때, 생길수 있는 오류
20 May [HTTP Definitive Guide - Chapter 14]Secure HTTP 정리
19 May Hashing
06 May N+1 문제
05 May JoinColumn vs MappedBy (ORM을 사용할때 주의할점)
03 May enum
26 Apr command(Redis)
24 Apr Trouble Shooting(Spring)
21 Apr Kafka Command
21 Apr POJO
19 Apr Spring Redis API 정리
15 Apr JPA로 MySQL의 Geometry 데이터 읽기
15 Apr URL vs endpoint
15 Apr Java Servlet
15 Apr static
14 Apr CrudRepository vs JpaRepository
14 Apr JDBC
14 Apr JPA
13 Apr Log4j vs SLF4J
05 Apr fold vs foldLeft vs foldRight
28 Mar G1 Garbage Collector
26 Mar Big Data 3V
26 Mar Data warehouse, Data Lake
23 Mar Apache Arrow
23 Mar PySpark UDF
23 Mar Parquet
18 Mar CSR vs SSR
17 Mar SOLID
16 Mar DataFrame
14 Mar Shuffle
14 Mar Cookie
13 Mar Transformation,Action
13 Mar Log Compaction
13 Mar 함수형 프로그래밍의 정의와 장단점
12 Mar HDFS append 동작방식
12 Mar Case Class
12 Mar Type class pattern vs implicit class
11 Mar Python to RDD communications
11 Mar Certificate Authority
11 Mar Constructor
10 Mar Data Processing Architecture
09 Mar Citus
08 Mar Message Queue 사용이유
07 Mar Kinesis
07 Mar Redis
07 Mar Accumulo
05 Mar Apache Flink vs Apache Spark
04 Mar Garbage Collection
04 Mar Process vs Thread
03 Mar JVM
02 Mar Elasticsearch _rollover API 사용하여, 효율적인 저장 분배
25 Feb Spark vs MapReduce
25 Feb Spark Architecture
25 Feb Executor 자원 결정하기
25 Feb Schema Registry
23 Feb Cache,Persist
13 Feb Spark Memory Architecture
11 Feb Pipfile
10 Feb [Trouble Shooting] cannot resolve column(numeric column name) in Spark Dataframe
10 Feb 중첩된 schema flattening하기
10 Feb Scala return
02 Feb Avro vs Parquet
02 Feb RDDs vs DataFrames vs Datasets
30 Jan HDFS Connector 2
30 Jan FQDN
25 Jan Searchable snapshot vs es for hadoop
24 Jan Hive Internal table, External table
20 Jan Kafka Streams
16 Jan Kubernetes Compute Resources
16 Jan kubelet
16 Jan Probe
16 Jan Pods
15 Jan Kubectl
12 Jan SCDF
11 Jan Rollup Jobs
08 Jan Builder Design Pattern
06 Jan Logical Replication
06 Jan Replica Identity
06 Jan Thread Safety
04 Jan git commands
03 Jan Flume
03 Jan 예전에 사용되던 시스템들
03 Jan Hue
03 Jan Zeppelin
02 Jan [NAVER DEVIEW 2020] Bye Oracle, Hello PG : 쇼핑검색플랫폼, MSA로 새옷을 갈아입다 정리
02 Jan Write-ahead logging

2020

30 Dec JAR
27 Dec Oozie
27 Dec Zookeeper
27 Dec YARN,MESOS,TEZ
27 Dec CDH vs HDP
26 Dec Hadoop Query Engine
26 Dec Kafka configuration 정리
26 Dec Kafka api정리
21 Dec StreamSQL
20 Dec MongoDB Overview
19 Dec CAP이론
17 Dec OLTP,OLAP
16 Dec Hive와Impala
16 Dec Adhoc Query
16 Dec Apache Pig
16 Dec Elastic Stack
16 Dec Elastic Search Overview
15 Dec Trouble Shooting(Hadoop)
15 Dec MapReduce
15 Dec HDFS
15 Dec Hadoop Overview
13 Dec Image
13 Dec Docker Network
12 Dec nginx
12 Dec Kafka Stream vs Spark Streaming
12 Dec Framework vs Library
12 Dec Batch Stream vs Stream Processing
12 Dec 객체를 여러개 주입하고 싶을때
12 Dec Apache Avro
12 Dec lombok
12 Dec Bean
12 Dec annotation
12 Dec MSA
12 Dec Monorepo
12 Dec Convention over configuration
12 Dec build setting
04 Dec Kafka Trouble Shooting
03 Dec [Trouble Shooting] Could not find gem 'nokogumbo(~> 2.0)' 해결하기
03 Dec Segment and Log Compaction Policy
03 Dec Travis CI에서 Spring boot app 테스트하기
01 Dec ETL Pipeline
01 Dec Java에서 array의 타입
30 Nov Apache Kafka 장단점
28 Nov [Leetcode] Partition Equal Subset Sum - memoization 적용
26 Nov [BOJ 1038-감소하는수] 집합이론을 이용한 추론
26 Nov [Leetcode] Smallest Integer Divisible by K
25 Nov [Inversion of Control 이해하기] Chapter 4 - IoC Container
25 Nov [Inversion of Control 이해하기] Chapter 3 - Dependency Injection
25 Nov [Inversion of Control 이해하기] Chapter 2 - DIP(Dependency Inversion Principle)
25 Nov [Inversion of Control 이해하기] Chapter 1 - Inversion of Control의 정의와 예시
25 Nov Design Principle vs Design Pattern
23 Nov iTerm2 setting
22 Nov Binary Numeric Promotion
18 Nov SQL Statements
18 Nov Sequence
17 Nov Read Consistency
16 Nov B-Tree Indexing
16 Nov HTTPS Handshake with TLS
16 Nov Method Signature
16 Nov Trigger
13 Nov webpack
13 Nov command-line 명령어
13 Nov [Leetcode] Permutations II
12 Nov REST의 정의와 6가지 원칙
12 Nov Transaction Isolation Level
12 Nov Cloud 환경 Architecture
12 Nov Docker의 장점과 단점
10 Nov Multilevel Feedback Queue Scheduling(MLFQ)
09 Nov five classes of IPv4
01 Nov Shortcut
01 Nov [LeetCode] Recover Binary Search Tree
29 Oct OAuth2 정리하기
28 Oct [Travis CI] docker image 빌드하여 dockerhub에 푸시작업 자동화하기
27 Oct [Docker] docker--compose.yml을 정의하여 Spring boot app 과 MySQL 앱 동시에 실행할때 Connection Link Failure 에러 해결하기
26 Oct [Spring Boot] Spring 2.x 버전에서 JAR로 Packaging 하는 것에 대하여
26 Oct [Docker] 자주 사용하는 커멘드
24 Oct [Trouble Shooting] Spring Maven Project에서 갑자기 api endpoint에 404 error가 뜰때 + Dynamic Web Module to x.x Error in Eclipse
23 Oct 주니어 개발자 또는 인턴으로 살아남기 위한 팁 요약
22 Oct [BOJ 1339-단어수학] 시간초과 원인(Math.pow가 병목의 원인)
22 Oct 학습한 sql 구문
22 Oct [DB Trouble Shooting]public key retrieval is not allowed
22 Oct [DB 상식] Migration이란?
22 Oct [DB Trouble Shooting] java.sql.SQLException - Access denied for user 예외
07 Oct [Master The Graph Theory] [BOJ 1261] 알고스팟
06 Oct [ROAD TO DATA ENGINEER] Kafka Basic Concepts
05 Oct [Spring] [Trouble Shooting] java.lang.IllegalStateException: No WebApplicationContext found: no ContextLoaderListener registered?
01 Oct [Hackerrank] Top Competitors
26 Sep Hackerrank - Java Regex 2 - Duplicate Words Solution 해설
26 Sep [Master The Simulation 인구이동] Python 풀이시 시간초과 발생이유 및 해결책
24 Sep Order of execution of a Query (쿼리의 실행순서)
24 Sep Spark와 Data Engineering 관련 프로젝트 시작하기
22 Sep Apache Storm
21 Sep [Master The Simulation] 어른 상어
15 Sep Synchronization
15 Sep Memory Management
15 Sep Deadlock
15 Sep CPU Scheduling Algorithm
08 Sep Multilevel Queue (MLQ) Scheduling
07 Sep TIME_WAIT이 필요한 이유
07 Sep 4-way handshake는 왜 4단계를 거쳐야하는가?
07 Sep 4-way-handshake에서 마지막 ack가 필요한 이유
04 Sep 소프트웨어 개발분야정하기
04 Sep Spring JPA 기본키 매핑하는 법
04 Sep Spring MVC 동작원리
04 Sep Session VS JWT(Json Web Token)

2017

19 Aug Test Strategy
19 Aug 객체지향 기법의 기본 원칙
19 Aug 소프트웨어 생명 주기모형
18 Aug Transaction
19 Jul Translation Process
19 Jul Compiler
17 Jul 화이트 박스와 블랙 박스 테스트의 정의와 차이점
17 Jul TCP/UDP
17 Jul OSI 7계층
17 Jul MAC address, IP address
17 Jul Flow control, congestion control
16 Jul SW에서 모듈화와 잘하기 위한 조건
16 Jul Sequence Diagram, Class Diagram
14 Jul git repository를 bitbucket에서 github로 옮기는 방법
13 Jul 세마포어와 구현방법 2가지
13 Jul Paging과 TLB
13 Jul 시스템 콜과 인터럽트
13 Jul Virtual memory에서 page replacement 정책
13 Jul page table 구조
13 Jul DB와 File System의 차이
13 Jul Database normalizaton
13 Jul Schema,Data Independence
12 Jul 스크립트언어와 컴파일언어의 차이점
12 Jul 캐시가 필요한 이유와 Cache Hit Ratio

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