read file with caching
yread_tsv(
  file,
  reader = utils::read.delim,
  params = list(),
  cache_dir = tempdir()
)
yread(file, reader = readLines, params = list(), cache_dir = NULL)the output of using the 'reader' to read the 'file_url' with parameters specified by the 'params'
This function read a file (local or url) and cache the content.