Key-value stores with automatic pruning. Caches can limit
    either their total size or the age of the oldest object (or both),
    automatically pruning objects to maintain the constraints.
c(
    person("Winston", "Chang", , "winston@rstudio.com", c("aut", "cre")),
    person(family = "RStudio", role = c("cph", "fnd")))
Winston Chang [aut, cre],
  RStudio [cph, fnd]