diff --git a/paimon-common/src/main/java/org/apache/paimon/rest/RESTTokenFileIO.java b/paimon-common/src/main/java/org/apache/paimon/rest/RESTTokenFileIO.java
index fb210dda435f..a4312470007b 100644
--- a/paimon-common/src/main/java/org/apache/paimon/rest/RESTTokenFileIO.java
+++ b/paimon-common/src/main/java/org/apache/paimon/rest/RESTTokenFileIO.java
@@ -55,6 +55,7 @@
 import static org.apache.paimon.rest.RESTApi.TOKEN_EXPIRATION_SAFE_TIME_MILLIS;
 import static org.apache.paimon.rest.RESTCatalogOptions.DLF_OSS_ENDPOINT;
 import static org.apache.paimon.rest.RESTCatalogOptions.IO_CACHE_ENABLED;
+import static org.apache.paimon.utils.Preconditions.checkArgument;
 
 /** A {@link FileIO} to support getting token from REST Server. */
 public class RESTTokenFileIO implements FileIO {
@@ -82,6 +83,24 @@ public class RESTTokenFileIO implements FileIO {
 
     private static final Logger LOG = LoggerFactory.getLogger(RESTTokenFileIO.class);
 
+    /** Sets the maximum number of cached FileIO instances. */
+    public static void setFileIOCacheMaximumSize(long maximumSize) {
+        checkArgument(maximumSize > 0, "Maximum cache size must be positive.");
+        FILE_IO_CACHE
+                .policy()
+                .eviction()
+                .orElseThrow(IllegalStateException::new)
+                .setMaximum(maximumSize);
+    }
+
+    static long fileIOCacheMaximumSize() {
+        return FILE_IO_CACHE
+                .policy()
+                .eviction()
+                .orElseThrow(IllegalStateException::new)
+                .getMaximum();
+    }
+
     private final CatalogContext catalogContext;
     private final Identifier identifier;
     private final Path path;
diff --git a/paimon-common/src/test/java/org/apache/paimon/rest/RESTTokenFileIOTest.java b/paimon-common/src/test/java/org/apache/paimon/rest/RESTTokenFileIOTest.java
index 9bab3e1a8976..4b64a682a764 100644
--- a/paimon-common/src/test/java/org/apache/paimon/rest/RESTTokenFileIOTest.java
+++ b/paimon-common/src/test/java/org/apache/paimon/rest/RESTTokenFileIOTest.java
@@ -47,6 +47,20 @@
 /** Tests for {@link RESTTokenFileIO}. */
 class RESTTokenFileIOTest {
 
+    @Test
+    void testSetFileIOCacheMaximumSize() {
+        long originalMaximumSize = RESTTokenFileIO.fileIOCacheMaximumSize();
+        try {
+            RESTTokenFileIO.setFileIOCacheMaximumSize(2000);
+            assertThat(RESTTokenFileIO.fileIOCacheMaximumSize()).isEqualTo(2000);
+            assertThatThrownBy(() -> RESTTokenFileIO.setFileIOCacheMaximumSize(0))
+                    .isInstanceOf(IllegalArgumentException.class)
+                    .hasMessage("Maximum cache size must be positive.");
+        } finally {
+            RESTTokenFileIO.setFileIOCacheMaximumSize(originalMaximumSize);
+        }
+    }
+
     @Test
     void testCreateBlobPresignedUrlRequiresBoundRootAndDelegates() throws IOException {
         Path tableRoot = new Path("oss://bucket/table");