Using net.jodah.expiringmap.ExpiringMap for tracking ttl expiration of database entries.
Minor javadoc updates.
diff --git a/utils/thirdparty/pom.xml b/utils/thirdparty/pom.xml
index 164f7c8..58c6a9b 100644
--- a/utils/thirdparty/pom.xml
+++ b/utils/thirdparty/pom.xml
@@ -39,30 +39,23 @@
     </dependency>
 
         <dependency>
+          <groupId>net.jodah</groupId>
+          <artifactId>expiringmap</artifactId>
+          <version>0.3.1</version>
+        </dependency>
+
+        <dependency>
             <groupId>net.kuujo.copycat</groupId>
             <artifactId>copycat</artifactId>
             <version>${copycat.version}</version>
         </dependency>
-<!-- Commented out due to Chronicle + OSGi issue 
-        <dependency>
-            <groupId>net.kuujo.copycat</groupId>
-            <artifactId>copycat-chronicle</artifactId>
-            <version>${copycat.version}</version>
-        </dependency>
--->
+
         <dependency>
             <groupId>net.kuujo.copycat</groupId>
             <artifactId>copycat-tcp</artifactId>
             <version>${copycat.version}</version>
         </dependency>
 
-<!-- chronicle transitive dependency
-        <dependency>
-            <groupId>net.java.dev.jna</groupId>
-            <artifactId>jna</artifactId>
-            <version>4.1.0</version>
-        </dependency>
--->
   </dependencies>
 
   <build>
@@ -89,20 +82,19 @@
             </filter>
 
             <filter>
+              <artifact>net.jodah.expiringmap:*</artifact>
+              <includes>
+                <include>net/jodah/expiringmap/**</include>
+              </includes>
+            </filter>
+
+            <filter>
               <artifact>net.kuujo.copycat:*</artifact>
               <includes>
                 <include>net/kuujo/copycat/**</include>
               </includes>
             </filter>
-<!-- chronicle transitive dependency
 
-            <filter>
-              <artifact>net.java.dev.jna:*</artifact>
-              <includes>
-                <include>com/sun/jna/**</include>
-              </includes>
-            </filter>
--->
           </filters>
         </configuration>
         <executions>
@@ -120,7 +112,7 @@
         <configuration>
           <instructions>
             <Export-Package>
-              com.googlecode.concurrenttrees.*;net.kuujo.copycat.*
+              com.googlecode.concurrenttrees.*;net.kuujo.copycat.*;net.jodah.expiringmap.*
             </Export-Package>
           </instructions>
         </configuration>