diff --git a/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/CacheKeysIndex.java b/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/CacheKeysIndex.java
index 0730380..35a1cc3 100644
--- a/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/CacheKeysIndex.java
+++ b/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/CacheKeysIndex.java
@@ -94,7 +94,7 @@
     private final Counter0 persistFailures;
 
     private Metrics(MetricMaker metricMaker, String name) {
-      String sanitizedName = metricMaker.sanitizeMetricName(name);
+      String sanitizedName = CacheNameSanitizer.sanitize(metricMaker, name);
 
       indexSize =
           metricMaker.newCallbackMetric(
diff --git a/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/CacheNameSanitizer.java b/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/CacheNameSanitizer.java
new file mode 100644
index 0000000..212aae3
--- /dev/null
+++ b/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/CacheNameSanitizer.java
@@ -0,0 +1,41 @@
+// Copyright (C) 2023 The Android Open Source Project
+//
+// 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.googlesource.gerrit.modules.cache.chroniclemap;
+
+import com.google.gerrit.metrics.MetricMaker;
+import java.util.regex.Pattern;
+
+class CacheNameSanitizer {
+  private static final Pattern METRIC_NAME_PATTERN =
+      Pattern.compile("[a-zA-Z0-9_-]+([a-zA-Z0-9_-]+)*");
+
+  /**
+   * Detect if <code>cacheName</code> contains only metric name allowed characters (that matches
+   * {@link #METRIC_NAME_PATTERN}). Note that `/` regardless of being allowed in metric names is
+   * omitted as it denotes the sub-metric and cache name should not be treated as metric /
+   * sub-metric. Typical persistent cache name (e.g. `diff_summary`) adheres to it therefore it is
+   * returned without any modification. In all other cases call to {@link
+   * MetricMaker#sanitizeMetricName(String)} is performed so that name is sanitized. This way
+   * sanitization stays backward compatible but also non-typical cases are handled.
+   */
+  static String sanitize(MetricMaker metricMaker, String cacheName) {
+    if (METRIC_NAME_PATTERN.matcher(cacheName).matches()) {
+      return cacheName;
+    }
+    return metricMaker.sanitizeMetricName(cacheName);
+  }
+
+  private CacheNameSanitizer() {}
+}
diff --git a/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/ChronicleMapStoreMetrics.java b/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/ChronicleMapStoreMetrics.java
index c27be99..8966aa5 100644
--- a/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/ChronicleMapStoreMetrics.java
+++ b/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/ChronicleMapStoreMetrics.java
@@ -30,7 +30,7 @@
 
   ChronicleMapStoreMetrics(String name, MetricMaker metricMaker) {
     this.name = name;
-    this.sanitizedName = metricMaker.sanitizeMetricName(name);
+    this.sanitizedName = CacheNameSanitizer.sanitize(metricMaker, name);
     this.metricMaker = metricMaker;
 
     this.storePutFailures =
diff --git a/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/SerializationMetricsForCache.java b/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/SerializationMetricsForCache.java
index 098e8c6..380648c 100644
--- a/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/SerializationMetricsForCache.java
+++ b/src/main/java/com/googlesource/gerrit/modules/cache/chroniclemap/SerializationMetricsForCache.java
@@ -35,7 +35,7 @@
     final Timer0 serializeLatency;
 
     private Metrics(MetricMaker metricMaker, String cacheName) {
-      String sanitizedName = metricMaker.sanitizeMetricName(cacheName);
+      String sanitizedName = CacheNameSanitizer.sanitize(metricMaker, cacheName);
 
       deserializeLatency =
           metricMaker.newTimer(
diff --git a/src/test/java/com/googlesource/gerrit/modules/cache/chroniclemap/CacheNameSanitizerTest.java b/src/test/java/com/googlesource/gerrit/modules/cache/chroniclemap/CacheNameSanitizerTest.java
new file mode 100644
index 0000000..ec469e4
--- /dev/null
+++ b/src/test/java/com/googlesource/gerrit/modules/cache/chroniclemap/CacheNameSanitizerTest.java
@@ -0,0 +1,49 @@
+// Copyright (C) 2023 The Android Open Source Project
+//
+// 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.googlesource.gerrit.modules.cache.chroniclemap;
+
+import static com.google.common.truth.Truth.assertThat;
+import static com.googlesource.gerrit.modules.cache.chroniclemap.CacheNameSanitizer.sanitize;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import com.google.gerrit.metrics.MetricMaker;
+import org.junit.Test;
+
+public class CacheNameSanitizerTest {
+  @Test
+  public void shouldNotSanitizeTypicalCacheName() {
+    String cacheName = "diff_summary";
+
+    assertThat(sanitize(mock(MetricMaker.class), cacheName)).isEqualTo(cacheName);
+  }
+
+  @Test
+  public void shouldNotSanitizeCacheNameWithHyphens() {
+    String cacheName = "cache_name-with-hyphens";
+
+    assertThat(sanitize(mock(MetricMaker.class), cacheName)).isEqualTo(cacheName);
+  }
+
+  @Test
+  public void shouldFallbackToMetricMakerSanitization() {
+    MetricMaker metricMaker = mock(MetricMaker.class);
+    String sanitizedName = "sanitized";
+    when(metricMaker.sanitizeMetricName(anyString())).thenReturn(sanitizedName);
+
+    assertThat(sanitize(metricMaker, "very+confusing.cache#name")).isEqualTo(sanitizedName);
+  }
+}
diff --git a/src/test/java/com/googlesource/gerrit/modules/cache/chroniclemap/ChronicleMapCacheTest.java b/src/test/java/com/googlesource/gerrit/modules/cache/chroniclemap/ChronicleMapCacheTest.java
index 58cc4ec..7bf2f6b 100644
--- a/src/test/java/com/googlesource/gerrit/modules/cache/chroniclemap/ChronicleMapCacheTest.java
+++ b/src/test/java/com/googlesource/gerrit/modules/cache/chroniclemap/ChronicleMapCacheTest.java
@@ -592,7 +592,7 @@
   @Test
   public void shouldSanitizeUnwantedCharsInMetricNames() throws Exception {
     String cacheName = "very+confusing.cache#name";
-    String sanitized = "very_confusing_cache_name";
+    String sanitized = "very_0x2B_confusing_0x2E_cache_0x23_name";
     String percentageFreeMetricName = "cache/chroniclemap/percentage_free_space_" + sanitized;
     String autoResizeMetricName = "cache/chroniclemap/remaining_autoresizes_" + sanitized;
     String maxAutoResizeMetricName = "cache/chroniclemap/max_autoresizes_" + sanitized;