diff --git a/pom.xml b/pom.xml
index 84f54aa3..f428d37f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -26,7 +26,7 @@ THE SOFTWARE.
   <parent>
     <groupId>org.jenkins-ci.plugins</groupId>
     <artifactId>plugin</artifactId>
-    <version>1.424</version>
+    <version>1.596.1</version>
   </parent>
 
   <artifactId>throttle-concurrents</artifactId>
@@ -42,25 +42,33 @@ THE SOFTWARE.
       <comments>All source code is under the MIT license.</comments>
     </license>
   </licenses>
-
+    
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <compileSource>1.6</compileSource>
+    <compileTarget>1.6</compileTarget>
+  </properties>
+    
   <build>
     <pluginManagement>
       <plugins>
         <plugin>
-          <groupId>org.apache.maven.plugins</groupId>
-          <artifactId>maven-enforcer-plugin</artifactId>
-          <version>1.0-beta-1</version>
+          <artifactId>maven-clean-plugin</artifactId>
+          <version>${maven-clean-plugin.version}</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>${maven-compiler-plugin.version}</version>
+          <configuration>
+            <source>${compileSource}</source>
+            <target>${compileTarget}</target>
+            <showDeprecation>false</showDeprecation>
+            <showWarnings>false</showWarnings>
+          </configuration>
         </plugin>
       </plugins>
     </pluginManagement>
     <plugins>
-      <plugin>
-        <artifactId>maven-compiler-plugin</artifactId>
-        <configuration>
-          <source>1.6</source>
-          <target>1.6</target>
-        </configuration>
-      </plugin>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-release-plugin</artifactId>
@@ -85,7 +93,14 @@ THE SOFTWARE.
       <timezone>+3</timezone>
     </developer>
   </developers>
-
+  
+  <contributors>
+    <contributor>
+      <name>Darren Ball</name>
+      <email>balldarrens@gmail.com</email>
+    </contributor>
+  </contributors>
+  
   <repositories>
     <repository>
       <id>repo.jenkins-ci.org</id>
@@ -113,6 +128,12 @@ THE SOFTWARE.
             <version>2.0.1</version>
             <type>jar</type>
         </dependency>
+        <dependency>
+            <groupId>org.jenkins-ci.plugins</groupId>
+            <artifactId>matrix-project</artifactId>
+            <version>1.4.1</version>
+        </dependency>
+        
     </dependencies>
 </project>  
 
diff --git a/src/main/java/hudson/plugins/throttleconcurrents/ThrottleJobProperty.java b/src/main/java/hudson/plugins/throttleconcurrents/ThrottleJobProperty.java
index 98a8c193..cb9b976f 100644
--- a/src/main/java/hudson/plugins/throttleconcurrents/ThrottleJobProperty.java
+++ b/src/main/java/hudson/plugins/throttleconcurrents/ThrottleJobProperty.java
@@ -16,6 +16,7 @@
 import hudson.matrix.MatrixBuild;
 import hudson.matrix.MatrixProject;
 
+import java.util.Arrays;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
@@ -29,6 +30,8 @@
 
 import net.sf.json.JSONObject;
 
+import org.apache.commons.lang.ArrayUtils;
+import org.apache.commons.lang.StringUtils;
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.kohsuke.stapler.QueryParameter;
 import org.kohsuke.stapler.StaplerRequest;
@@ -42,9 +45,13 @@ public class ThrottleJobProperty extends JobProperty<Job<?,?>> {
     private List<String> categories;
     private boolean throttleEnabled;
     private String throttleOption;
+    private boolean limitOneJobWithMatchingParams;
     private transient boolean throttleConfiguration;
     private @CheckForNull ThrottleMatrixProjectOptions matrixOptions;
 
+    private String paramsToUseForLimit;
+    private transient List<String> paramsToCompare;
+
     /**
      * Store a config version so we're able to migrate config on various
      * functionality upgrades.
@@ -57,6 +64,8 @@ public ThrottleJobProperty(Integer maxConcurrentPerNode,
                                List<String> categories,
                                boolean throttleEnabled,
                                String throttleOption,
+                               boolean limitOneJobWithMatchingParams,
+                               String paramsToUseForLimit,
                                @CheckForNull ThrottleMatrixProjectOptions matrixOptions
                                ) {
         this.maxConcurrentPerNode = maxConcurrentPerNode == null ? 0 : maxConcurrentPerNode;
@@ -66,7 +75,20 @@ public ThrottleJobProperty(Integer maxConcurrentPerNode,
                 new CopyOnWriteArrayList<String>(categories);
         this.throttleEnabled = throttleEnabled;
         this.throttleOption = throttleOption;
+        this.limitOneJobWithMatchingParams = limitOneJobWithMatchingParams;
         this.matrixOptions = matrixOptions;
+        this.paramsToUseForLimit = paramsToUseForLimit;
+        if ((this.paramsToUseForLimit != null)) {
+            if ((this.paramsToUseForLimit.length() > 0)) {
+                this.paramsToCompare = Arrays.asList(ArrayUtils.nullToEmpty(StringUtils.split(this.paramsToUseForLimit)));
+            }
+            else {
+                this.paramsToCompare = new ArrayList<String>();
+            }
+        }
+        else {
+            this.paramsToCompare = new ArrayList<String>();
+        }
     }
 
 
@@ -126,6 +148,10 @@ public boolean getThrottleEnabled() {
         return throttleEnabled;
     }
 
+    public boolean isLimitOneJobWithMatchingParams() {
+        return limitOneJobWithMatchingParams;
+    }
+
     public String getThrottleOption() {
         return throttleOption;
     }
@@ -148,6 +174,10 @@ public Integer getMaxConcurrentTotal() {
         return maxConcurrentTotal;
     }
 
+    public String getParamsToUseForLimit() {
+        return paramsToUseForLimit;
+    }
+
     @CheckForNull
     public ThrottleMatrixProjectOptions getMatrixOptions() {
         return matrixOptions;
@@ -171,6 +201,23 @@ public boolean isThrottleMatrixConfigurations() {
                 : ThrottleMatrixProjectOptions.DEFAULT.isThrottleMatrixConfigurations();
     }
 
+    public List<String> getParamsToCompare() {
+        if (paramsToCompare == null) {
+            if ((paramsToUseForLimit != null)) {
+                if ((paramsToUseForLimit.length() > 0)) {
+                    paramsToCompare = Arrays.asList(paramsToUseForLimit.split(","));
+                }
+                else {
+                    paramsToCompare = new ArrayList<String>();
+                }
+            }
+            else {
+                paramsToCompare = new ArrayList<String>();
+            }
+        }
+        return paramsToCompare;
+    }
+
     static List<Queue.Task> getCategoryTasks(String category) {
         assert category != null && !category.equals("");
         List<Queue.Task> categoryTasks = new ArrayList<Queue.Task>();
diff --git a/src/main/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcher.java b/src/main/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcher.java
index a0440387..33c28a14 100644
--- a/src/main/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcher.java
+++ b/src/main/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcher.java
@@ -3,6 +3,8 @@
 import hudson.Extension;
 import hudson.matrix.MatrixConfiguration;
 import hudson.matrix.MatrixProject;
+import hudson.model.AbstractProject;
+import hudson.model.ParameterValue;
 import hudson.model.Computer;
 import hudson.model.Executor;
 import hudson.model.Hudson;
@@ -10,10 +12,15 @@
 import hudson.model.Node;
 import hudson.model.Queue;
 import hudson.model.Queue.Task;
+import hudson.model.queue.WorkUnit;
 import hudson.model.labels.LabelAtom;
 import hudson.model.queue.CauseOfBlockage;
 import hudson.model.queue.QueueTaskDispatcher;
+import hudson.model.Action;
+import hudson.model.ParametersAction;
 
+import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
 import java.util.Set;
 import java.util.logging.Level;
@@ -92,6 +99,9 @@ else if (tjp.getThrottleOption().equals("category")) {
     public CauseOfBlockage canRun(Queue.Item item) {
         ThrottleJobProperty tjp = getThrottleJobProperty(item.task);
         if (tjp!=null && tjp.getThrottleEnabled()) {
+            if (tjp.isLimitOneJobWithMatchingParams() && isAnotherBuildWithSameParametersRunningOnAnyNode(item)) {
+                return CauseOfBlockage.fromMessage(Messages._ThrottleQueueTaskDispatcher_OnlyOneWithMatchingParameters());
+            }
             return canRun(item.task, tjp);
         }
         return null;
@@ -178,6 +188,106 @@ else if (tjp.getThrottleOption().equals("category")) {
         return null;
     }
 
+    private boolean isAnotherBuildWithSameParametersRunningOnAnyNode(Queue.Item item) {
+        if (isAnotherBuildWithSameParametersRunningOnNode(Hudson.getInstance(), item)) {
+            return true;
+        }
+
+        for (Node node : Hudson.getInstance().getNodes()) {
+            if (isAnotherBuildWithSameParametersRunningOnNode(node, item)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private boolean isAnotherBuildWithSameParametersRunningOnNode(Node node, Queue.Item item) {
+        ThrottleJobProperty tjp = getThrottleJobProperty(item.task);
+        Computer computer = node.toComputer();
+        List<String> paramsToCompare = tjp.getParamsToCompare();
+        List<ParameterValue> itemParams = getParametersFromQueueItem(item);
+
+        if (paramsToCompare.size() > 0) {
+            itemParams = doFilterParams(paramsToCompare, itemParams);
+        }
+
+        if (computer != null) {
+            for (Executor exec : computer.getExecutors()) {
+                if (item != null && item.task != null) {
+                    // TODO: refactor into a nameEquals helper method
+                    if (exec.getCurrentExecutable() != null &&
+                            exec.getCurrentExecutable().getParent() != null &&
+                            exec.getCurrentExecutable().getParent().getOwnerTask() != null &&
+                            exec.getCurrentExecutable().getParent().getOwnerTask().getName().equals(item.task.getName())) {
+                        List<ParameterValue> executingUnitParams = getParametersFromWorkUnit(exec.getCurrentWorkUnit());
+                        executingUnitParams = doFilterParams(paramsToCompare, executingUnitParams);
+
+                        if (executingUnitParams.containsAll(itemParams)) {
+                            LOGGER.log(Level.FINE, "build (" + exec.getCurrentWorkUnit() +
+                                    ") with identical parameters (" +
+                                    executingUnitParams + ") is already running.");
+                            return true;
+                        }
+                    }
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Filter job parameters to only include parameters used for throttling
+     * @param params
+     * @param OriginalParams
+     * @return
+     */
+    private List<ParameterValue> doFilterParams(List<String> params, List<ParameterValue> OriginalParams) {
+        if (params.isEmpty()) {
+            return OriginalParams;
+        }
+
+        List<ParameterValue> newParams = new ArrayList<ParameterValue>();
+
+        for (ParameterValue p : OriginalParams) {
+            if (params.contains(p.getName())) {
+                newParams.add(p);
+            }
+        }
+        return newParams;
+    }
+
+    public List<ParameterValue> getParametersFromWorkUnit(WorkUnit unit) {
+        List<ParameterValue> paramsList = new ArrayList<ParameterValue>();
+
+        if (unit != null && unit.context != null && unit.context.actions != null) {
+            List<Action> actions = unit.context.actions;
+            for (Action action : actions) {
+                if (action instanceof ParametersAction) {
+                    ParametersAction params = (ParametersAction) action;
+                    if (params != null) {
+                        paramsList = params.getParameters();
+                    }
+                }
+            }
+        }
+        return paramsList;
+    }
+
+    public List<ParameterValue> getParametersFromQueueItem(Queue.Item item) {
+        List<ParameterValue> paramsList;
+
+        ParametersAction params = item.getAction(ParametersAction.class);
+        if (params != null) {
+            paramsList = params.getParameters();
+        }
+        else
+        {
+            paramsList  = new ArrayList<ParameterValue>();
+        }
+        return paramsList;
+    }
+
+
     @CheckForNull
     private ThrottleJobProperty getThrottleJobProperty(Task task) {
         if (task instanceof Job) {
diff --git a/src/main/resources/hudson/plugins/throttleconcurrents/Messages.properties b/src/main/resources/hudson/plugins/throttleconcurrents/Messages.properties
index 949b92e3..98caeb7d 100644
--- a/src/main/resources/hudson/plugins/throttleconcurrents/Messages.properties
+++ b/src/main/resources/hudson/plugins/throttleconcurrents/Messages.properties
@@ -1,5 +1,6 @@
 ThrottleQueueTaskDispatcher.MaxCapacityOnNode=Already running {0} builds on node
 ThrottleQueueTaskDispatcher.MaxCapacityTotal=Already running {0} builds across all nodes
 ThrottleQueueTaskDispatcher.BuildPending=A build is pending launch
+ThrottleQueueTaskDispatcher.OnlyOneWithMatchingParameters=A build with matching parameters is already running
 
 ThrottleMatrixProjectOptions.DisplayName=Additional options for Matrix projects
\ No newline at end of file
diff --git a/src/main/resources/hudson/plugins/throttleconcurrents/ThrottleJobProperty/config.jelly b/src/main/resources/hudson/plugins/throttleconcurrents/ThrottleJobProperty/config.jelly
index e18c2cf3..34ba01b0 100644
--- a/src/main/resources/hudson/plugins/throttleconcurrents/ThrottleJobProperty/config.jelly
+++ b/src/main/resources/hudson/plugins/throttleconcurrents/ThrottleJobProperty/config.jelly
@@ -20,6 +20,17 @@
              field="maxConcurrentPerNode">
       <f:textbox />
     </f:entry>
+  
+  
+    <f:optionalBlock field="limitOneJobWithMatchingParams"
+                   title="${%Prevent multiple jobs with identical parameters from running concurrently}"
+                   inline="true">
+    <f:entry title="${%List of parameters to check (comma-separated)}"
+             field="paramsToUseForLimit">
+    <f:textbox />
+      </f:entry>
+    </f:optionalBlock>
+
     <j:if test="${!empty(descriptor.categories)}">
       <f:entry title="${%Multi-Project Throttle Category}">
         <j:forEach var="cat" items="${descriptor.categories}">
diff --git a/src/main/resources/hudson/plugins/throttleconcurrents/ThrottleJobProperty/help-limitOneJobWithMatchingParams.html b/src/main/resources/hudson/plugins/throttleconcurrents/ThrottleJobProperty/help-limitOneJobWithMatchingParams.html
new file mode 100644
index 00000000..973eab0c
--- /dev/null
+++ b/src/main/resources/hudson/plugins/throttleconcurrents/ThrottleJobProperty/help-limitOneJobWithMatchingParams.html
@@ -0,0 +1,6 @@
+<div>
+  <p>If this box is checked, only one instance of the job with matching parameters will be allowed to run at a given time.
+  Other instances of this job with different parameters will be allowed to run concurrently.</p>
+  <p>Optionally, provide a comma-separated list of parameters to use when comparing jobs. If blank, all parameters
+    must match for a job to be limited to one running instance.</p>
+</div>
diff --git a/src/test/java/hudson/plugins/throttleconcurrents/ThrottleIntegrationTest.java b/src/test/java/hudson/plugins/throttleconcurrents/ThrottleIntegrationTest.java
index 069f6d0d..09ace0b0 100644
--- a/src/test/java/hudson/plugins/throttleconcurrents/ThrottleIntegrationTest.java
+++ b/src/test/java/hudson/plugins/throttleconcurrents/ThrottleIntegrationTest.java
@@ -123,6 +123,8 @@ public void testThrottlingWithCategory() throws Exception {
                 Arrays.asList(category),      // categories
                 true,   // throttleEnabled
                 "category",     // throttleOption
+                false,
+                null,
                 ThrottleMatrixProjectOptions.DEFAULT
         ));
         p1.getBuildersList().add(new SleepBuilder(SLEEP_TIME));
@@ -135,6 +137,8 @@ public void testThrottlingWithCategory() throws Exception {
                 Arrays.asList(category),      // categories
                 true,   // throttleEnabled
                 "category",     // throttleOption
+                false,
+                null,
                 ThrottleMatrixProjectOptions.DEFAULT
         ));
         p2.getBuildersList().add(new SleepBuilder(SLEEP_TIME));
diff --git a/src/test/java/hudson/plugins/throttleconcurrents/ThrottleJobPropertyTest.java b/src/test/java/hudson/plugins/throttleconcurrents/ThrottleJobPropertyTest.java
index ec532db8..09a7cd4f 100644
--- a/src/test/java/hudson/plugins/throttleconcurrents/ThrottleJobPropertyTest.java
+++ b/src/test/java/hudson/plugins/throttleconcurrents/ThrottleJobPropertyTest.java
@@ -22,11 +22,11 @@ public void testGetCategoryProjects() throws Exception {
         String alpha = "alpha", beta = "beta", gamma = "gamma"; // category names
         FreeStyleProject p1 = createFreeStyleProject("p1");
         FreeStyleProject p2 = createFreeStyleProject("p2");
-        p2.addProperty(new ThrottleJobProperty(1, 1, Arrays.asList(alpha), false, THROTTLE_OPTION_CATEGORY, ThrottleMatrixProjectOptions.DEFAULT));
+        p2.addProperty(new ThrottleJobProperty(1, 1, Arrays.asList(alpha), false, THROTTLE_OPTION_CATEGORY, false, "", ThrottleMatrixProjectOptions.DEFAULT));
         FreeStyleProject p3 = createFreeStyleProject("p3");
-        p3.addProperty(new ThrottleJobProperty(1, 1, Arrays.asList(alpha, beta), true, THROTTLE_OPTION_CATEGORY, ThrottleMatrixProjectOptions.DEFAULT));
+        p3.addProperty(new ThrottleJobProperty(1, 1, Arrays.asList(alpha, beta), true, THROTTLE_OPTION_CATEGORY, false, "", ThrottleMatrixProjectOptions.DEFAULT));
         FreeStyleProject p4 = createFreeStyleProject("p4");
-        p4.addProperty(new ThrottleJobProperty(1, 1, Arrays.asList(beta, gamma), true, THROTTLE_OPTION_CATEGORY, ThrottleMatrixProjectOptions.DEFAULT));
+        p4.addProperty(new ThrottleJobProperty(1, 1, Arrays.asList(beta, gamma), true, THROTTLE_OPTION_CATEGORY, false, "", ThrottleMatrixProjectOptions.DEFAULT));
         // TODO when core dep ≥1.480.3, add cloudbees-folder as a test dependency so we can check jobs inside folders
         assertProjects(alpha, p3);
         assertProjects(beta, p3, p4);
@@ -45,7 +45,7 @@ public void testGetCategoryProjects() throws Exception {
 
 
     public void testToString_withNulls(){
-        ThrottleJobProperty tjp = new ThrottleJobProperty(0,0, null, false, null, ThrottleMatrixProjectOptions.DEFAULT);
+        ThrottleJobProperty tjp = new ThrottleJobProperty(0,0, null, false, null, false, "", ThrottleMatrixProjectOptions.DEFAULT);
         assertNotNull(tjp.toString());
     }
 
@@ -55,10 +55,13 @@ public void testThrottleJob_constructor_should_store_arguments() {
         List<String> expectedCategories = Collections.emptyList();
         boolean expectedThrottleEnabled = anyBoolean();
         String expectedThrottleOption = anyString();
+        boolean expectedLimitOneJobWithMatchingParams = anyBoolean();
+        String expectedParamsToUseForLimit = anyString();
 
         ThrottleJobProperty property = new ThrottleJobProperty(expectedMaxConcurrentPerNode,
                 expectedMaxConcurrentTotal,
                 expectedCategories, expectedThrottleEnabled, expectedThrottleOption,
+                expectedLimitOneJobWithMatchingParams, expectedParamsToUseForLimit,
                 ThrottleMatrixProjectOptions.DEFAULT);
 
         assertEquals(expectedMaxConcurrentPerNode, property.getMaxConcurrentPerNode());
@@ -80,6 +83,8 @@ public void testThrottleJob_should_copy_categories_to_concurrency_safe_list() {
                 unsafeList,
                 anyBoolean(),
                 "throttle_option",
+                anyBoolean(),
+                anyString(),
                 ThrottleMatrixProjectOptions.DEFAULT);
 
         List<String> storedCategories = property.getCategories();
@@ -95,6 +100,8 @@ public void testThrottleJob_constructor_handles_null_categories(){
                 null,
                 anyBoolean(),
                 "throttle_option",
+                anyBoolean(),
+                anyString(),
                 ThrottleMatrixProjectOptions.DEFAULT);
 
         assertEquals(Collections.<String>emptyList(), property.getCategories());
diff --git a/src/test/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcherTest.java b/src/test/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcherTest.java
index 529a1870..d317f977 100644
--- a/src/test/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcherTest.java
+++ b/src/test/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcherTest.java
@@ -358,7 +358,7 @@ private String configureLogger()
                     input.setValueAttribute(logger);
                 }
                 HtmlSelect select = form.getSelectByName("level");
-                HtmlOption option = select.getOptionByValue("fine");
+                HtmlOption option = select.getOptionByValue("ALL");
                 select.setSelectedAttribute(option, true);
                 break;
             }