package net.openhft.chronicle.map.example; import net.openhft.chronicle.map.ChronicleMap; import net.openhft.chronicle.map.ChronicleMapBuilder; import net.openhft.lang.model.DataValueClasses; import net.openhft.lang.values.LongValue; import java.io.File; import java.io.IOException; public class DistributedSequenceMain { public static void main(String... ignored) throws IOException { Class longValueClass = DataValueClasses.directClassFor(LongValue.class); ChronicleMap map = ChronicleMapBuilder.of(String.class, longValueClass) .entries(128) .actualSegments(1) .create(new File("/tmp/counters")); LongValue value = DataValueClasses.newDirectReference(longValueClass); map.acquireUsing("sequence", value); for (int i = 0; i < 1000000; i++) { long nextId = value.addAtomicValue(1); } map.close(); } }