Re: can kafka state stores be used as a application level cache by application to modify it from outside the stream topology?

Thanks Matthias.
Can you elaborate on the replicated caching layer part?
When you say global stores, do you mean GlobalKTable created from a topic
e.g. using StreamsBuilder.globalTable(String topic) method ?

On Thu, Apr 30, 2020 at 12:44 PM Matthias J. Sax <mjsax@apache.org> wrote:

> It's not possible to modify state store from "outside".
>
> If you want to build a "replicated caching layer", you could use global
> stores and write into the corresponding topics to update all stores. Of
> course, those updates would be async.
>
>
> -Matthias
>
> On 4/29/20 10:52 PM, Pushkar Deole wrote:
> > Hi All,
> >
> > I am wondering if this is possible: i have been asked to use state stores
> > as a general replicated cache among multiple instances of service
> instances
> > however the state store is created through streambuilder but is not
> > actually modified through stream processor topology however it is to be
> > modified from outside the stream topology. So, essentially, the state
> store
> > is just to be created from streambuilder and then to be used as an
> > application level cache that will get replicated between application
> > instances. Is this possible using state stores?
> >
> > Secondly, if possible, is this a good design approach?
> >
> > Appreciate your response since I don't know the internals of state
> stores.
> >
>
>