diff --git a/README.md b/README.md
index 01c88f4f8cf..b3edd324c8e 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ If you are using Maven with [BOM][libraries-bom], add this to your pom.xml file:
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>libraries-bom</artifactId>
-      <version>26.54.0</version>
+      <version>26.57.0</version>
       <type>pom</type>
       <scope>import</scope>
     </dependency>
diff --git a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/spi/v1/HeaderInterceptor.java b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/spi/v1/HeaderInterceptor.java
index dba3b38e92f..b972ecdcef4 100644
--- a/google-cloud-spanner/src/main/java/com/google/cloud/spanner/spi/v1/HeaderInterceptor.java
+++ b/google-cloud-spanner/src/main/java/com/google/cloud/spanner/spi/v1/HeaderInterceptor.java
@@ -87,6 +87,8 @@ class HeaderInterceptor implements ClientInterceptor {
       CacheBuilder.newBuilder().maximumSize(1000).build();
   private final Cache<String, Map<String, String>> builtInAttributesCache =
       CacheBuilder.newBuilder().maximumSize(1000).build();
+  private final Cache<DatabaseName, Cache<String, String>> keyCache =
+      CacheBuilder.newBuilder().maximumSize(1000).build();
 
   // Get the global singleton Tagger object.
   private static final Tagger TAGGER = Tags.getTagger();
@@ -116,7 +118,7 @@ public void start(Listener<RespT> responseListener, Metadata headers) {
         try {
           Span span = Span.current();
           DatabaseName databaseName = extractDatabaseName(headers);
-          String key = databaseName + method.getFullMethodName();
+          String key = extractKey(databaseName, method.getFullMethodName());
           TagContext tagContext = getTagContext(key, method.getFullMethodName(), databaseName);
           Attributes attributes =
               getMetricAttributes(key, method.getFullMethodName(), databaseName);
@@ -201,6 +203,13 @@ private Map<String, Long> parseServerTimingHeader(String serverTiming) {
     return serverTimingMetrics;
   }
 
+  private String extractKey(DatabaseName databaseName, String methodName)
+      throws ExecutionException {
+    Cache<String, String> keys =
+        keyCache.get(databaseName, () -> CacheBuilder.newBuilder().maximumSize(1000).build());
+    return keys.get(methodName, () -> databaseName + methodName);
+  }
+
   private DatabaseName extractDatabaseName(Metadata headers) throws ExecutionException {
     String googleResourcePrefix = headers.get(GOOGLE_CLOUD_RESOURCE_PREFIX_KEY);
     if (googleResourcePrefix != null) {