What is the difference between persist and cache in apache spark

Question

How can we differenciate between persist() and cache() in Spark?

Answer 1

Hi,

persist () allows the user to specify the storage level whereas cache () uses the default storage level in Spark.

Answer 2

Using cash technique we can save intermediate results in memory only.

Using persist we can save the intermediate results in five storage levels which are memory only, memory and disc, disc  only, memory only serialisation and memory and disc serialisation