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Tagged with storage

4 cards

DevOps Easy Theory

AWS S3 basics

S3 is durable object storage used for files, backups, logs, static assets, and data lake style workloads.

  • Object storage not block storage
  • Highly durable
  • Great for static files and archives
#aws #devops #s3 #storage

AWS S3 basics

ETL / Data Engineering Easy Theory

Parquet vs CSV vs JSON

CSV is simple but weakly typed, JSON is flexible but verbose, and Parquet is compressed columnar storage optimized for analytics.

  • CSV is easy to inspect
  • JSON handles nested structure
  • Parquet is best for warehouse scans
#data-formats #etl #storage

Parquet vs CSV vs JSON

ETL / Data Engineering Easy Theory

What is a data lake?

A data lake stores large volumes of raw or semi-structured data cheaply for later processing.

  • Raw and flexible storage
  • Schema can be applied later
  • Needs governance to avoid becoming messy
#data-lake #etl #storage

What is a data lake?