Databricks Certified Data Engineer - Professional
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Discuss the role of caching in optimizing query performance in a data processing pipeline. How does caching differ from other optimization techniques like indexing and partitioning?
A
Caching involves storing the results of expensive query operations in memory, which can significantly reduce query latency and improve throughput by avoiding repeated computations.
B
Caching is identical to indexing in that both techniques aim to reduce query latency, but caching is more effective for write-heavy workloads.
C
Caching should be avoided as it consumes memory resources without providing any performance benefits.
D
Caching is primarily used for data storage and has no impact on query performance.