memento.guava — org.clojars.roklenarcic/memento 0.9.7

Guava cache implementation.

CacheKey clj

conf->builder clj

(conf->builder {:memento.core/keys [concurrency initial-capacity size< ttl fade]
                :memento.guava/keys [weight< removal-listener kv-weight
                                     weak-keys weak-values soft-values refresh
                                     stats ticker]}
               sec-index)

Creates and configures common parameters on the builder.

conf->sec-index clj

(conf->sec-index {:memento.core/keys [concurrency initial-capacity]})

Creates secondary index for evictions

GCache clj

load-data clj

(load-data cache data-map)

nil-entry clj

process-non-cached clj

(process-non-cached obj)

Unwrap EntryMeta objects and throw exception to prevent caching if no-cache? is set.

sec-index-conj-entry clj

(sec-index-conj-entry sec-index k v)

Add entry to secondary index. k is CacheKey of incoming Cache entry v is value of incoming cache entry, might be EntryMeta, if it is then we use each tag-idents as key (id) pointing to a HashSet of CacheKeys.

For each ID we add CacheKey to its HashSet.

sec-index-disj-entry clj

(sec-index-disj-entry sec-index k v)

Remove value from secondary index, processing EntityMeta if there is one.

k is CacheKey of Cache entry being removed v is value of Cache entry, might be EntryMeta, if it is then we use each of tag-idents as key (id) pointing to a HashSet. We remove CacheKey from each set, removing the whole entry if the resulting set is empty.

stats clj

(stats fn-or-cache)

Return guava stats for the cache if it is a Guava Cache.

Takes a memoized fn or a Cache instance as a parameter.

Returns com.google.common.cache.CacheStats

to-data clj

(to-data cache)

val->indexed-cached clj

(val->indexed-cached sec-index k v)

Converts value into a representation that is suitable for the Cache (no nils), and also registers it with the secondary index. Returned value should not be discarded.