philiprehberger-memo

philiprehberger-memo is a Ruby package for practical memoization with TTL, LRU eviction, and thread-safety. It is described as a Ruby library and includes a mixin, Philiprehberger::Memo, for memoizing methods in a class.

The README shows memoization on instance methods such as find, expensive_query, and config. It supports optional ttl and max_size arguments, returns cached results on repeated calls, and provides manual invalidation through clear_memo and clear_all_memos. The package also includes cache statistics for individual methods and aggregated across all memoized methods, with hit counts, miss counts, and hit rate. Additional methods let callers check whether a specific call is cached, list memoized methods, measure cache size, remove a single cached call signature, and force a recomputation with refresh_memo. A separate cache API is documented as Philiprehberger::Memo::Cache, with methods for getting, setting, deleting, listing keys, pruning expired entries, and clearing the cache.

The package is documented as per-instance caching rather than class-level caching. It handles nil and false return values correctly, works with positional and keyword arguments, and uses per-instance mutexes for thread safety. The README also states that expired entries can be pruned eagerly without resetting stats.

Ruby = 3.1 is listed as a requirement. Installation is shown through a Gemfile entry or the gem install command, and the package is available on RubyGems and GitHub. It is released under the MIT license. The page also identifies version 0.7.0 and a download count of 940,166.