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diff --git a/src/main/java/com/amazon/carbonado/sequence/SequenceValueProducerPool.java b/src/main/java/com/amazon/carbonado/sequence/SequenceValueProducerPool.java
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+/*
+ * Copyright 2006 Amazon Technologies, Inc. or its affiliates.
+ * Amazon, Amazon.com and Carbonado are trademarks or registered trademarks
+ * of Amazon Technologies, Inc. or its affiliates.  All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.amazon.carbonado.sequence;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import com.amazon.carbonado.RepositoryException;
+import com.amazon.carbonado.util.AbstractPool;
+
+/**
+ * A concurrent pool of strongly referenced {@link SequenceValueProducer}
+ * instances mapped by name. SequenceValueProducer instances are lazily created
+ * and pooled.
+ * 
+ * @author bcastill
+ * @author Brian S O'Neill
+ */
+public abstract class SequenceValueProducerPool
+    extends AbstractPool<String, SequenceValueProducer, RepositoryException>
+{
+    public SequenceValueProducerPool() {
+    }
+
+    /**
+     * Returns a SequenceValueProducer instance for the given name, which is
+     * lazily created and pooled. If multiple threads are requesting upon the
+     * same name concurrently, at most one thread attempts to lazily create the
+     * SequenceValueProducer. The others wait for it to become available.
+     *
+     * @param name name of sequence
+     */
+    public SequenceValueProducer get(String name) throws RepositoryException {
+        return (SequenceValueProducer) super.get(name);
+    }
+    
+    /**
+     * Returns reserved values for all {@link SequenceValueProducer}s.
+     *
+     * @param log optional log to report errors; uses default log if null
+     */
+    public void returnReservedValues(Log log) {
+        for (SequenceValueProducer producer : values()) {
+            try {
+                producer.returnReservedValues();
+            } catch (RepositoryException e) {
+                if (log == null) {
+                    log = LogFactory.getLog(SequenceValueProducerPool.class);
+                }
+                log.error(e.getMessage(), e);
+            }
+        }
+    }
+
+    protected final SequenceValueProducer create(String name) throws RepositoryException {
+        return createSequenceValueProducer(name);
+    }
+
+    protected abstract SequenceValueProducer createSequenceValueProducer(String name)
+        throws RepositoryException;
+}