[infinispan-issues] [JBoss JIRA] (ISPN-5553) Functional Java 8 API

[Dan Berindei (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-5553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dan Berindei updated ISPN-5553:
-------------------------------
    Git Pull Request: https://github.com/infinispan/infinispan/pull/3571, https://github.com/infinispan/infinispan/pull/3677  (was: https://github.com/infinispan/infinispan/pull/3571)


> Functional Java 8 API
> ---------------------
>
>                 Key: ISPN-5553
>                 URL: https://issues.jboss.org/browse/ISPN-5553
>             Project: Infinispan
>          Issue Type: Feature Request
>            Reporter: Galder Zamarreño
>            Assignee: Galder Zamarreño
>             Fix For: 8.0.0.CR1, 8.0.0.Final
>
>
> Infinispan 8 is baselining on Java 8 and that enables a more advanced , functional, APIs to be built instead of relying on the traditional Map-like APIs. Such APIs, taking lambda functions, can improve on the current APIs in the following way:
> * Being able to provide a write operation, where the operation is defined as a lambda, better enables conditional (CAS) like operations that are based in functions other than equality, e.g. version equality. If this functions can be executed atomically, they provide a better solution for Hot Rod version-based replace operations that currently can cause some weird behaviour (ISPN-4972)
> * When operations are defined as lambdas, it's easier to move towards a model that tracks/replicates operations leading to state, rather than replicating state itself. This makes it easier to implement more-efficiently replicated alternative data structures, such as counts, lists...etc, and paths the way towards CRDTs, particularly CmRDT (Commutative Replicated Data Types) or operation-based CRDTs.



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