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Build Your Own Data Warehouse with DuckDB + S3

Introducing an easy way to store data in AWS S3 and query it directly from your local machine using DuckDB.
2025-03-23
BigData > engineering
#duckdb #datawarehouse #data #s3 #aws

Do You Know About the Spark TimestampNTZ Data Type?

Sharing an issue that occurred due to the introduction of the TimestampNTZ data type in environments using Spark and Delta.
2025-03-02
BigData > engineering
#BigData #Spark #Delta #TimestampNTZ #DataType

My Experience Translating 『Julia for Data Analytics』

In this post, I share my experience of translating an IT book for the first time — how I got started, the challenges I faced, and the lessons I learned along the way.
2025-01-30
Language > julia
#julia #translate #translation #dataanalysis #JuliaforDataAnalysis #book #korean

Please Build a Data Warehouse

As a data engineer, I’d like to share the importance of a proper data warehouse and how to construct one effectively, based on my experience.
2025-01-27
BigData > engineering
#BigData #DataWarehouse #DW #DataQuality #Pipeline #DataEngineering

Avoid a Cost Explosion with AWS Personalize

In this post, I’ll share how I unexpectedly faced a cost explosion while using AWS Personalize. Hopefully, my experience can help others avoid similar pitfalls in SaaS cost management.
2025-01-20
etc. > lessons
#aws #personalize #pricing #mistake #aws-item-affinity
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