NearCache

lru_key_func(x)

Least Recently Used key function.

Parameters

x – (DataRecord)

Returns

(float), last access time of x.

lfu_key_func(x)

Least Frequently Used key function.

Parameters

x – (DataRecord)

Returns

(int), access hit count of x.

random_key_func(x)

Random key function.

Parameters

x – (DataRecord)

Returns

(int), 0.

class DataRecord(key, value, create_time=None, ttl_seconds=None)

Bases: object

An expirable and evictable data object which represents a cache entry.

is_expired(max_idle_seconds)

Determines whether this record is expired or not.

Parameters

max_idle_seconds – (long), the maximum idle time of record, maximum time after the last access time.

Returns

(bool), true is this record is not expired.

class NearCache(name, serialization_service, in_memory_format, time_to_live_seconds, max_idle_seconds, invalidate_on_change, eviction_policy, eviction_max_size, eviction_sampling_count=None, eviction_sampling_pool_size=None)

Bases: dict

NearCache is a local cache used by MapFeatNearCache.

get_statistics()

Returns the statistics of the NearCache. :return: (Dict), Dictionary that stores statistics related to this near cache.

class NearCacheManager(client)

Bases: object

get_or_create_near_cache(name)

destroy_near_cache(name)

destroy_all_near_caches()

list_all_near_caches()