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<div class="subTitle">org.janusgraph.graphdb.database.cache</div>
<h2 title="Interface SchemaCache" class="title">Interface SchemaCache</h2>
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<pre>public interface <span class="typeNameLabel">SchemaCache</span></pre>
<div class="block">This interface defines the methods that a SchemaCache must implement. A SchemaCache is maintained by the JanusGraph graph
database in order to make the frequent lookups of schema vertices and their attributes more efficient through a dedicated
caching layer. Schema vertices are type vertices and related vertices.
The SchemaCache speeds up two types of lookups:
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<li>Retrieving a type by its name (index lookup)</li>
<li>Retrieving the relations of a schema vertex for predefined <a href="../../../../../org/janusgraph/graphdb/types/system/SystemRelationType.html" title="interface in org.janusgraph.graphdb.types.system"><code>SystemRelationType</code></a>s</li>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/janusgraph/graphdb/database/cache/SchemaCache.html#expireSchemaElement-long-">expireSchemaElement</a></span>(long&nbsp;schemaId)</code>&nbsp;</td>
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<td class="colFirst"><code><a href="../../../../../org/janusgraph/diskstorage/EntryList.html" title="interface in org.janusgraph.diskstorage">EntryList</a></code></td>
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<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Long.html?is-external=true" title="class or interface in java.lang">Long</a>&nbsp;getSchemaId(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;schemaName)</pre>
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<pre><a href="../../../../../org/janusgraph/diskstorage/EntryList.html" title="interface in org.janusgraph.diskstorage">EntryList</a>&nbsp;getSchemaRelations(long&nbsp;schemaId,
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org.apache.tinkerpop.gremlin.structure.Direction&nbsp;dir)</pre>
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