Caching... There is so much in that word - the pain of invalid | L̶u̵m̶i̵n̷o̴u̶s̶m̶e̵n̵B̶l̵o̵g̵

Caching... There is so much in that word - the pain of invalidation and the joy of reusing computation. In Spark, this is known as an optimization technique...

https://luminousmen.com/post/explaining-the-mechanics-of-spark-caching