Hi Rohit, Stateful functions fit well into domains that require many (billions) state machines that are able to communicate with each other by message passing. In stateful functions world, a state machine can be represented by a stateful function - a uniquely addressable entity, that can keep state and be invoked with messages.
Here is a summary of some of the capabilities of stateful functions: - built on a scalable battle tested, stateful stream processor - scales to many millions state machines per node (bounded by disk size) idle state machines do not occupy any RAM. - exactly once processing of the messages and state modifications across all of the state machines - Globally consists of point in time snapshots to durable storage, like S3 or HDFS. - interop with FaaS via remote functions - being able to seamlessly scale the compute part when needed. - no need for service discovery and complex failure-recovery logic around message sending, de-duping, retrying etc' I would encourage you to visit [1] for more information, and take a look at some of the recording of the previous Flink forward conferences to understand more about what kind of applications you can build with that. [1] https://flink.apache.org/stateful-functions.html Good luck, Igal. On Wed, Jun 17, 2020 at 3:18 PM Rohit R <letsmailro...@gmail.com> wrote: > Hi Till Rohrmann, > > Consider any Finite State Machine which involves many states and need > timers (wait for this much time and then timeout) or for example, consider > the Movie Booking ticketing system > http://thatgamesguy.co.uk/articles/modular-finite-state-machine-in-unity/ > or these images: > https://imgur.com/a/MV62BlO > > The current use case is based on FSM, but in future can consider HFSM as > well: > https://web.stanford.edu/class/cs123/lectures/CS123_lec08_HFSM_BT.pdf > > Thank You > > On Wed, Jun 17, 2020 at 5:20 PM Till Rohrmann <trohrm...@apache.org> > wrote: > > > Hi Rohit, > > > > image attachments are filtered out and not visible to others. Hence, I > > would suggest that you upload the image and then share the link. > > > > Maybe you can share a bit more details about the use case and your > current > > analysis of the problem. > > > > Cheers, > > Till > > > > On Wed, Jun 17, 2020 at 12:15 PM Rohit R <letsmailro...@gmail.com> > wrote: > > > > > Hello, > > > > > > To solve the following use case, What will be the best option between > > > Flink or Flink Stateful Functions or Akka FSM? > > > > > > Use Case: > > > [image: image.png] > > > > > > Can I get the analysis, pros, and cons of each? For example, why > choosing > > > Flink Stateful function will better option. > > > > > > Thank You > > > > > >
