[infinispan-issues] [JBoss JIRA] (ISPN-11424) Deprecate StorageType Configuration in favour of MediaType

[Gustavo Fernandes (Jira)]

Gustavo Fernandes created ISPN-11424:
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             Summary: Deprecate StorageType Configuration in favour of MediaType
                 Key: ISPN-11424
                 URL: https://issues.redhat.com/browse/ISPN-11424
             Project: Infinispan
          Issue Type: Bug
          Components: Core
    Affects Versions: 11.0.0.Alpha2
            Reporter: Gustavo Fernandes
            Assignee: Gustavo Fernandes


Currently caches have configuration to specify memory storing aspects that affects eviction, e.g.
{code:xml}
<memory>
    <object size="20000"/>
</memory>
{code}

{code:xml}
<memory>
   <off-heap size="10000000" eviction="MEMORY"/>
</memory>
{code}

{code:xml}
<memory>
   <binary strategy="EXCEPTION" eviction="MEMORY" size="5000"/>
</memory>
{code}

Each of those configurations affect the format that the data will be stored, being {{object}} the default on-heap storage, {{off-heap}} the {{byte[]}} out of heap storage and {{binary}} an on-heap format that mix {{byte[]}}, {{String}} and primitives.

This ticket proposes to have the {{MediaType}} of the keys and values to dictate the storage format, and let the {{<memory>}} element to be responsible to choose between on-heap and off-heap storage, eliminating the {{Binary}} option altogether. The configuration would be something like:

{code:xml}
<!-- Default configuration, heap storage with POJOs -->
<memory storage="heap">
    <eviction size="20000"/>
</memory>
{code}

{code:xml}
<!-- Storing java serialized objects, on-heap -->
<encoding>
    <key media-type="application/x-java-serialized-object"/>
    <value media-type="application/x-java-serialized-object"/>
</encoding>
<memory storage="heap">
    <eviction size="20000"/>
</memory>
{code}

{code:xml}
<!-- Off-heap configuration, in protobuf format -->
<encoding>
    <key media-type="application/x-protostream"/>
    <value media-type="application/x-protostream"/>
</encoding>
<memory storage="off-heap">
    <eviction size="10000000" eviction="MEMORY"/>
</memory>
{code}




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