How Does Warehouse Caching Impact Queries?

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How Does Warehouse Caching Impact Queries?

Alejandro Penzini Answered question December 19, 2023
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Warehouse Caching:

Active warehouses maintain a table data cache, improving subsequent query performance by reducing table reads.
Cache size scales with warehouse compute resources: larger warehouses have larger caches.
Suspending a warehouse drops the cache, potentially impacting initial query performance upon resumption.
Resumed warehouses rebuild the cache: queries benefit as the cache grows.

Consider this trade-off:

Suspend to save credits: immediate cost savings, but potentially slower initial queries.
Leave running to maintain cache: faster initial queries, but ongoing credit consumption.

Alejandro Penzini Answered question December 19, 2023
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