Plug-ins for indexing data

Depending on the type of indexes you want to build, WebSphere® eXtreme Scale provides built-in plug-ins that you can add to the BackingMap to build an index.

HashIndex

The built-in HashIndex, the com.ibm.websphere.objectgrid.plugins.index.HashIndex class, is a MapIndexPlugin plug-in that you can add into BackingMap to build static or dynamic indexes. This class supports both the MapIndex and MapRangeIndex interfaces. Defining and implementing indexes can significantly improve query performance.

InverseRangeIndex

The built-in InverseRangeIndex, the com.ibm.websphere.objectgrid.plugins.index.InverseRangeIndex class, is a MapIndexPlugin plug-in that you can add into BackingMap to build static indexes. This class supports the MapIndex interface. Defining and implementing this index lets you retrieve range data from the grid.