Changelog

Source: NEWS.md

dastash 0.1.0

• Initial CRAN submission.

• A persistent cache shared by every R process on a machine: stash() opens a directory; stash_get(), stash_set(), stash_has(), stash_delete(), stash_mget() and stash_mset() read and write it; stash_keys(), stash_entries(), stash_count(), stash_volume() and stash_stats() describe it.

• Keys are text, or any R value the specified key encoding covers (stash_key()), so a cache keyed on function arguments survives R upgrades.

• Small values live in a transactional ‘libmdbx’ database through ‘mdbx’; values of inline_max bytes or more become read-only, content-addressed files, stored once however many keys hold them (stash_path()).

• Entries expire (expire =, stash_expire()), carry tags (stash_evict(tag =)), and are evicted least-recently-stored first when the cache holds more than size_limit (stash_cull()).

• Atomic operations across processes: stash_add(), stash_pop(), stash_touch(), stash_incr(), stash_decr() and stash_transact().

• stash_memoise() caches a function’s results across sessions and processes; as_cachem() lets ‘memoise’ and ‘shiny’ use a stash.

• stash_check() finds and repairs damage, and reclaims what a crash leaves.