Unlocking Spark's Hidden Power: The Secret Weapon of Caching Revealed in a Tale of Bug Hunting and...
Caching in Apache Spark is essential for improving performance by storing intermediary results in memory and reusing them instead of recalculating them from scratch.
Caching can also prevent inconsistencies caused by non-deterministic functions, such as the UUID function, by ensuring that the same results are used consistently across different operations.