Comments (2)
Hello,
Cache makes eviction of segment (there are no eviction on key-level). You can be notified when segment is removed using heir
property:
{heir, atom() | pid()} - heir of evicted cache segments
cache:start_link(my_cache, [{n, 10}, {ttl, 60}, {heir, self()}]).
heir property triggers ets:give_away(...)
feature, you process will get {'ETS-TRANSFER',Tab,FromPid,GiftData}
message. You can use ETS table reference to handle eviction according to your business logic.
https://github.com/fogfish/cache/blob/master/src/cache_heap.erl#L138
http://erldocs.com/current/stdlib/ets.html?i=0&search=ets:gi#give_away/3
Please be aware that your process becomes an owner of ETS segment, your process needs to drop it.
Should it resolve your use-case?
from cache.
Hello,
Thanks a lot. You can add this info in the documentation :) might be useful for others too.
Silviu
from cache.
Related Issues (19)
- Not compiling with erlang 19
- start cache on distribute nodes makes crash HOT 4
- transaction HOT 3
- can you provide api that i can get Multiple data HOT 3
- Cache Replacement Policies
- Sharding support HOT 13
- Cache distroed HOT 1
- stick to one namespace/prefix
- cache expire issue HOT 8
- cache:ttl(...) returns negative value
- entry can not stay longer than ttl to cache:start_link(...) HOT 3
- Get and put value from function if not exists. HOT 9
- Multiple entries in a single key HOT 1
- Set a limit on the use memory HOT 1
- Is there any limitation on size of segmentation for optimal performance? HOT 12
- Q: Информация о кэше, cache:i() HOT 1
- Use CT for Testing HOT 1
- support pid() as cache stats recipient. HOT 1
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from cache.