[Spark] 아파치 스파크(spark) 시작하기
Driver, Executor, Node, Job, Stage, Task, Cluster Manager/ RDD, Fault tolerance / Hadoop
Posted by
Wonyong Jang
on April 11, 2021 ·
16 mins read
[DB] MongoDB Index 설계 전략
인덱스 설계와 성능 향상 방법 / 쿼리 상태 점검(currentOp) 및 종료(killOp)
Posted by
Wonyong Jang
on April 06, 2021 ·
27 mins read
[Scala] Null, null, Nil, Nothing, None, and Unit
Empty value을 표현하는 방법과 사용 목적
Posted by
Wonyong Jang
on March 31, 2021 ·
2 mins read
[DevOps] Blue-Green 배포, A/B 테스트, Canary Release
Continuous Deliver(무중단 배포 전략)
Posted by
Wonyong Jang
on March 24, 2021 ·
6 mins read
[Java] 람다 표현식(Lambda Expressions)
람다식 사용법 / 함수형 인터페이스 / Variable Capture / 메서드, 생성자 레퍼런스 / invokedynamic
Posted by
Wonyong Jang
on March 12, 2021 ·
27 mins read
[Scala] 스칼라의 Type에 대해서
type bounds(Upper bound, Lower bound), type variance
Posted by
Wonyong Jang
on March 05, 2021 ·
8 mins read
[Scala] 여러가지 date 표현
ISO 8601, UTC, GMT, Timezone
Posted by
Wonyong Jang
on February 27, 2021 ·
10 mins read
[Scala] 스칼라 시작하기2
Tuples, Pattern matching, 믹스인 클래스 컴포지션, Currying, companion object, Sealed
Posted by
Wonyong Jang
on February 25, 2021 ·
13 mins read