Data Retention
Everything on SkillVeris tagged Data Retention — collected across the glossary, study notes, blog, and cheat sheets.
5 resources across 1 library
Interview Questions(5)
What Is Downsampling in Time-Series Databases?
Downsampling is the process of reducing high-resolution time-series data into lower-resolution aggregates (like per-minute or per-hour averages) after it ages…
What Are Retention Policies in Time-Series Databases?
A retention policy is a rule that automatically deletes (or archives) time-series data once it passes a defined age, so storage does not grow without bound as…
What Are Common Archival Strategies for Old Database Data?
Archival strategies move old, rarely accessed data out of the primary operational database into cheaper long-term storage — via time-based partition archiving,…
Soft Delete vs Hard Delete: What Is the Difference and When Do You Use Each?
A hard delete physically removes a row from the database with a DELETE statement, while a soft delete keeps the row in place but flags it as inactive using a c…
How Would You Design a Metrics Monitoring System (like Prometheus)?
Design a metrics monitoring system around periodic pull-based (or push-based via a gateway) scraping of numeric time series from every service, storage in a ti…