3 Redshift interview QA (2025 Edition) | 2025-09-16 01:13 PM

Описание: 📘 Neulax - Redshift Interview Prep
This video contains 3 Redshift interview questions with answers.

📝 Questions & Answers:

Q1: What is concurrency scaling?
A1: Concurrency scaling adds transient clusters to handle spikes in concurrent read queries, reducing queuing. Example: Like opening temporary extra workrooms during a rush hour to avoid bottlenecks.

Q2: What is columnar storage?
A2: Columnar storage saves data by column rather than by row, dramatically improving analytical scan performance. Example: Like storing each column of a spreadsheet in its own filing drawer so you can fetch one attribute for many rows quickly.

Q3: What is the best practice for choosing DISTKEY and SORTKEY?
A3: Choose DISTKEY to colocate join-heavy columns and SORTKEY for common range or filter columns, balancing skew and query patterns. Example: Like placing frequently-joined paperwork in the same room and ordering it by the most commonly searched field.

#JavaScript #JS #redshift #Frontend #Backend #Fullstack #NodeJS #WebDevelopment #CodingInterview #TechInterview #SystemDesign #LearnCoding #Programming #CR7 #100DaysOfCode #cristianoronaldo #Developer #SoftwareEngineering #short #Neulax #CodingTips #InterviewPrep #CareerGrowth #CodingChallenges #LeetCode #DSA #Algorithms #OpenSource #CodeWithMe #TechLearning