diff --git a/src/main/java/com/devcycle/sdk/server/local/bucketing/LocalBucketing.java b/src/main/java/com/devcycle/sdk/server/local/bucketing/LocalBucketing.java
index 923b647..8c7505e 100644
--- a/src/main/java/com/devcycle/sdk/server/local/bucketing/LocalBucketing.java
+++ b/src/main/java/com/devcycle/sdk/server/local/bucketing/LocalBucketing.java
@@ -34,14 +34,17 @@ public class LocalBucketing {
     Linker linker; // used to read/write to WASM
     AtomicReference<Memory> memRef; // reference to start of WASM's memory
     private final Set<Integer> pinnedAddresses;
+    private final Set<Integer> pinnedEventIds;
     private final HashMap<String, Integer> sdkKeyAddresses;
-    private final HashMap<Variable.TypeEnum, Integer> variableTypeMap = new HashMap<Variable.TypeEnum, Integer>();
+    private final HashMap<Variable.TypeEnum, Integer> variableTypeMap = new HashMap<>();
     private final Logger logger = Logger.getLogger(LocalBucketing.class.getName());
+    private final Map<String, String> configMetadataCache = new HashMap<>();
 
     public LocalBucketing() {
         OBJECT_MAPPER.setSerializationInclusion(JsonInclude.Include.NON_NULL);
 
         pinnedAddresses = new HashSet<>();
+        pinnedEventIds = new HashSet<>();
         sdkKeyAddresses = new HashMap<>();
 
         store = Store.withoutData();
@@ -195,17 +198,18 @@ private byte[] readAssemblyScriptUint8Array(int address) {
     }
 
     public synchronized void storeConfig(String sdkKey, String config) {
-        unpinAll();
+        unPinAllEventIds();
         int sdkKeyAddress = getSDKKeyAddress(sdkKey);
         int configAddress = newUint8ArrayParameter(config.getBytes(StandardCharsets.UTF_8));
 
         Func setConfigDataPtr = linker.get(store, "", "setConfigDataUTF8").get().func();
         WasmFunctions.Consumer2<Integer, Integer> fn = WasmFunctions.consumer(store, setConfigDataPtr, I32, I32);
         fn.accept(sdkKeyAddress, configAddress);
+        configMetadataCache.put(sdkKey, internalGetConfigMetadata(sdkKeyAddress));
     }
 
     public synchronized void setPlatformData(String platformData) {
-        unpinAll();
+        unPinAllEventIds();
         int platformDataAddress = newUint8ArrayParameter(platformData.getBytes(StandardCharsets.UTF_8));
         Func setPlatformDataPtr = linker.get(store, "", "setPlatformDataUTF8").get().func();
         WasmFunctions.Consumer1<Integer> fn = WasmFunctions.consumer(store, setPlatformDataPtr, I32);
@@ -213,7 +217,7 @@ public synchronized void setPlatformData(String platformData) {
     }
 
     public synchronized void setClientCustomData(String sdkKey, String customData) {
-        unpinAll();
+        unPinAllEventIds();
         int sdkKeyAddress = getSDKKeyAddress(sdkKey);
         int customDataAddress = newUint8ArrayParameter(customData.getBytes(StandardCharsets.UTF_8));
         Func setCustomClientDataPtr = linker.get(store, "", "setClientCustomDataUTF8").get().func();
@@ -222,7 +226,7 @@ public synchronized void setClientCustomData(String sdkKey, String customData) {
     }
 
     public synchronized BucketedUserConfig generateBucketedConfig(String sdkKey, DevCycleUser user) throws JsonProcessingException {
-        unpinAll();
+        unPinAllEventIds();
         String userString = OBJECT_MAPPER.writeValueAsString(user);
 
         int sdkKeyAddress = getSDKKeyAddress(sdkKey);
@@ -261,7 +265,7 @@ public synchronized byte[] getVariableForUserProtobuf(byte[] serializedParams) {
     }
 
     public synchronized void initEventQueue(String sdkKey, String clientUUID, String options) {
-        unpinAll();
+        unPinAllEventIds();
         int sdkKeyAddress = getSDKKeyAddress(sdkKey);
         int clientUUIDAddress = newWasmString(clientUUID);
         int optionsAddress = newWasmString(options);
@@ -272,9 +276,9 @@ public synchronized void initEventQueue(String sdkKey, String clientUUID, String
     }
 
     public synchronized void queueEvent(String sdkKey, String user, String event) {
-        unpinAll();
+        unPinAllEventIds();
         int sdkKeyAddress = newWasmString(sdkKey);
-        int userAddress = getPinnedParameter(user);
+        int userAddress = getPinnedEventId(user);
         int eventAddress = newWasmString(event);
 
         Func queueEventPtr = linker.get(store, "", "queueEvent").get().func();
@@ -283,9 +287,9 @@ public synchronized void queueEvent(String sdkKey, String user, String event) {
     }
 
     public synchronized void queueAggregateEvent(String sdkKey, String event, String variableVariationMap) {
-        unpinAll();
+        unPinAllEventIds();
         int sdkKeyAddress = getSDKKeyAddress(sdkKey);
-        int eventAddress = getPinnedParameter(event);
+        int eventAddress = getPinnedEventId(event);
         int variableVariationMapAddress = newWasmString(variableVariationMap);
 
         Func queueAggregateEventPtr = linker.get(store, "", "queueAggregateEvent").get().func();
@@ -294,7 +298,7 @@ public synchronized void queueAggregateEvent(String sdkKey, String event, String
     }
 
     public synchronized FlushPayload[] flushEventQueue(String sdkKey) throws JsonProcessingException {
-        unpinAll();
+        unPinAllEventIds();
         int sdkKeyAddress = getSDKKeyAddress(sdkKey);
 
         Func flushEventQueuePtr = linker.get(store, "", "flushEventQueue").get().func();
@@ -317,7 +321,7 @@ public synchronized FlushPayload[] flushEventQueue(String sdkKey) throws JsonPro
     }
 
     public synchronized void onPayloadFailure(String sdkKey, String payloadId, boolean retryable) {
-        unpinAll();
+        unPinAllEventIds();
         int sdkKeyAddress = getSDKKeyAddress(sdkKey);
         int payloadIdAddress = newWasmString(payloadId);
 
@@ -327,7 +331,7 @@ public synchronized void onPayloadFailure(String sdkKey, String payloadId, boole
     }
 
     public synchronized void onPayloadSuccess(String sdkKey, String payloadId) {
-        unpinAll();
+        unPinAllEventIds();
         int sdkKeyAddress = getSDKKeyAddress(sdkKey);
         int payloadIdAddress = newWasmString(payloadId);
 
@@ -337,7 +341,7 @@ public synchronized void onPayloadSuccess(String sdkKey, String payloadId) {
     }
 
     public synchronized int getEventQueueSize(String sdkKey) {
-        unpinAll();
+        unPinAllEventIds();
         int sdkKeyAddress = getSDKKeyAddress(sdkKey);
 
         Func getEventQueueSizePtr = linker.get(store, "", "eventQueueSize").get().func();
@@ -359,11 +363,22 @@ private void unpinParameter(int address) {
         unpin.accept(address);
     }
 
-    private void unpinAll() {
+    private void unPinAllEventIds() {
+        for (int address : pinnedEventIds) {
+            unpinParameter(address);
+        }
+        pinnedEventIds.clear();
+    }
+
+    private void unPinAllParameters() {
         for (int address : pinnedAddresses) {
             unpinParameter(address);
         }
+        for (int address : pinnedEventIds) {
+            unpinParameter(address);
+        }
         pinnedAddresses.clear();
+        pinnedEventIds.clear();
     }
 
     private int getPinnedParameter(String param) {
@@ -373,6 +388,13 @@ private int getPinnedParameter(String param) {
         return address;
     }
 
+    private int getPinnedEventId(String param) {
+        int address = newWasmString(param);
+        pinParameter(address);
+        pinnedEventIds.add(address);
+        return address;
+    }
+
     private int getSDKKeyAddress(String sdkKey) {
         if (!sdkKeyAddresses.containsKey(sdkKey)) {
             int sdkKeyAddress = newWasmString(sdkKey);
@@ -384,7 +406,17 @@ private int getSDKKeyAddress(String sdkKey) {
     }
 
     public String getConfigMetadata(String sdkKey) {
-        int sdkKeyAddress = getSDKKeyAddress(sdkKey);
+        if (configMetadataCache.containsKey(sdkKey)) {
+            return configMetadataCache.get(sdkKey);
+        } else {
+            int sdkKeyAddress = getSDKKeyAddress(sdkKey);
+            String metadata = internalGetConfigMetadata(sdkKeyAddress);
+            configMetadataCache.put(sdkKey, metadata);
+            return metadata;
+        }
+    }
+
+    private String internalGetConfigMetadata(int sdkKeyAddress) {
         Func getConfigMetadataPtr = linker.get(store, "", "getConfigMetadata").get().func();
         WasmFunctions.Function1<Integer, Integer> getConfigMetadata = WasmFunctions.func(
                 store, getConfigMetadataPtr, I32, I32);