caffeine-screensaver

A Cache is similar to ConcurrentMap, but not quite the same. The

Install

All systems
curl cmd.cat/caffeine-screensaver.sh
Debian Debian
apt-get install caffeine
Ubuntu
apt-get install caffeine
image/svg+xml Kali Linux
apt-get install caffeine
Fedora
dnf install caffeine
Windows (WSL2)
sudo apt-get update sudo apt-get install caffeine
Raspbian
apt-get install caffeine

caffeine

A Cache is similar to ConcurrentMap, but not quite the same. The

most fundamental difference is that a ConcurrentMap persists all elements that are added to it until they are explicitly removed. A Cache on the other hand is generally configured to evict entries automatically, in order to constrain its memory footprint. In some cases a LoadingCache or AsyncLoadingCache can be useful even if it doesn't evict entries, due to its automatic cache loading. Caffeine provide flexible construction to create a cache with a combination of the following features: automatic loading of entries into the cache, optionally asynchronously size-based eviction when a maximum is exceeded based on frequency and recency time-based expiration of entries, measured since last access or last write asynchronously refresh when the first stale request for an entry occurs keys automatically wrapped in weak references values automatically wrapped in weak or soft references notification of evicted (or otherwise removed) entries writes propagated to an external resource accumulation of cache access statistics