Cache information is maintained for each server.
It is not shared between servers in a cluster environment.
However, if a cache is explicitly deleted, all servers in the cluster environment will be notified of the cache and it will be discarded from all servers.
[Additional information about discarding cache]
Cache is managed in LRU method.
When a cache area is fully used and new caches are registered, they will be discarded starting with the least recently referenced cache.
time-to-idle-seconds
If the target object is not referenced for the specified time, the object will be discarded.
If you specify 0, this constraint does not discard an object.
If a cache is deleted due to this constraint, notification to all servers in the cluster environment will not be executed.
Regardless of this value, the object will be discarded if it is subject to deletion in LRU method.
time-to-live-seconds
If the specified lifetime of the cache has been exceeded since the cache was registered, the object will be discarded.
If you specify 0, this constraint does not discard an object.
If a cache is deleted due to this constraint, notification to all servers in the cluster environment will not be executed.
Regardless of this value, the object will be discarded if it is subject to deletion in LRU method.
Please refer to the following for cache settings.
https://document.intra-mart.jp/library/iap/public/configuration/im_configuration_reference/texts/im_service/im-ehcache-config/index.html
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iAP/Accel Platform/All Updates
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FAQID:1233