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Home/Questions/SQL/Snowflake: Types of Caching, Time Travel vs. Fail-safe, Snowpipe, Materialized Views

Snowflake: Types of Caching, Time Travel vs. Fail-safe, Snowpipe, Materialized Views

SQLhard0.4 min read

Reviewed by Aditya Kumar · Last reviewed 2026-03-24

Snowflake caching: metadata, query result (per warehouse), local disk. Time Travel: historical data, default 1 day (configurable up to 90). Fail-safe: 7-day backup after Time Travel. Snowpipe: continuous load from S3/GCS/Blob. Materialized views: pre-computed, auto-refresh. Use:...

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Asked at 1 company
Category
487
questions in SQL
Difficulty Split
130E|271M|86H
in this category
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1,863
across 7 categories
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Key Concepts Tested
snowflake
Expert Answer
79 words

Snowflake caching: metadata, query result (per warehouse), local disk. Time Travel: historical data, default 1 day (configurable up to 90). Fail-safe: 7-day backup after Time Travel. Snowpipe: continuous load from S3/GCS/Blob. Materialized views: pre-computed, auto-refresh. Use: cache for repeated queries; Time Travel for recovery; Snowpipe for streaming load. Why it matters: Design choices compound at scale—wrong approach can cause 100× overhead. Scalability trade-offs: Profile before optimizing; validate on sample then full. Cost implications: Suboptimal choices multiply at billion-row scale.

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Pro Tip

Red Flag: 24/7 warehouse with low utilization. Pro-Move: 'Auto-suspend 5min saved 55% compute; sized by concurrency not peak.'

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