You can use receive timeout (see actor section in documentation) and then
stop it after inactivity. If you use Cluster Sharding you should combine
that with the Passivate message as mentioned by Paul (see cluster sharding
section in documentation).
/Patrik
tis 9 feb. 2016 kl. 16:01 skrev Paul Cleary <pclear...@gmail.com>:

> You can use Passivate, which will persist I believe after some period of
> unuse
>
>
> On Tuesday, February 9, 2016 at 9:57:05 AM UTC-5, Mahmoud Atef wrote:
>>
>> Hi,
>>
>> I'm new to AKKA world and I'm working on implementing EventSourcing using
>> the PersistentActors, but I got confused about the life-cycle of those
>> actors. As far as I understand, the default behavior of persistent actors
>> is to stay in the memory until being shutdown, which may overwhelm the
>> memory with tons of actors (actor per entity) living there.
>>
>> I assume that there should be one of two workarounds:
>> 1. Define a pool of actors and shift the context of the actors according
>> to the demand.
>> 2. Shutdown each actor after persisting its events.
>>
>> I cant get any article in that context, so what is the best practice in
>> this case?
>>
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