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From Jens Deppe <jde...@pivotal.io>
Subject Re: Simple Java Client
Date Mon, 24 Apr 2017 22:25:49 GMT
I would suggest working closely with John Blum on this as I believe he
already provides similar functionality in Spring Data Geode.

Also, would this be the beginning of a client-side admin API with the
intention of fleshing that out completely in the future?

--Jens

On Mon, Apr 24, 2017 at 3:03 PM, Fred Krone <fkrone@pivotal.io> wrote:

> In an effort to improve Java developer ease of use for caching with Geode I
> am looking for feedback on going forward with creating a Java client.  This
> client will allow for server-side region creation and distributed data
> caching.  This would allow for a thin client that fits with microservice
> caching patterns and also abstracts a cleaner client-server experience
> driven interface.
>
> Initially we were going to update the Region interface but were concerned
> with breaking existing applications.  We also would like to provide Region
> creation to a client application and so propose here solving both of these
> areas with a Java client.
>
> It would have new project repo for the client.
>
> It would provide new Region interface for clients.  The specifics of the
> API design are too lengthy for this conversation but implementation will
> resemble JSR 107 Cache interface.
>
> It would use the new security framework.
>
>
> *An example*,
>
> The client application simply creates an instance of client and points it
> to the locator:
>
>
> org.apache.geode.client.Client client = Client.create(locatorHost,
> locatorPort);
>
>
> Client has the following methods:
>
> package org.apache.geode.client;
>
>
> public interface GeodeClient {
>
>   /**
>
>    * creates the region on the servers, or gets the region if it exits,
> returns a PROXY region
>
>    */
>
>   public Region getOrCreateRegion(RegionAttributes attributes, String
> name);
>
>
>   /**
>
>    * Returns a PROXY region if the region exists on the server
>
>    */
>
>   public Region getRegion(String name);
>
>
>
>
>
>
> MVP
>
> The smallest set of features to test this idea, learn and iterate, and get
> the client into the communities hands for future iterations is:
>
>
> Create a server side Region from a client
>
> Region interface has CRUD on par with javax.cache.Cache (from JSR 107)
>
> Calls are asynchronous -- futures
>
>
>
> Also would like feedback on which future functionality would be most useful
> from a thin client:
>
> Function execution
>
> Durable clients
>
> User defined serialization
>
> Register interest
>
> Queries
>
> CQ
>
> Near side caching
>
> Create disk stores from client
>
> Region group membership
>
> Client subscription load balancing
> Transactions
>
>
> Thanks,
> -Fred
>

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