Update gRPC keepalive defaults to 10s interval, 5s timeout, enable without calls

Change keepAliveTimeMs from 55s to 10s, keepAliveTimeoutMs from 20s to 5s,
and enable keepAliveWithoutCalls by default in both ConnectParam (V1) and
ConnectConfig (V2).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: haorenfsa <haorenfsa@gmail.com>

Author: haorenfsa

sdk-core/src/main/java/io/milvus/param/ConnectParam.java

@@ -209,9 +209,9 @@ public static class Builder {
         private String uri;
         private String token;
         private long connectTimeoutMs = 10000;
-        private long keepAliveTimeMs = 55000;
-        private long keepAliveTimeoutMs = 20000;
-        private boolean keepAliveWithoutCalls = false;
+        private long keepAliveTimeMs = 10000;
+        private long keepAliveTimeoutMs = 5000;
+        private boolean keepAliveWithoutCalls = true;
         private long rpcDeadlineMs = 0; // Disabling deadline
 
         private String clientKeyPath;

sdk-core/src/main/java/io/milvus/v2/client/ConnectConfig.java

@@ -35,9 +35,9 @@ public class ConnectConfig {
     private String password;
     private String dbName;
     private long connectTimeoutMs = 10000;
-    private long keepAliveTimeMs = 55000;
-    private long keepAliveTimeoutMs = 20000;
-    private boolean keepAliveWithoutCalls = false;
+    private long keepAliveTimeMs = 10000;
+    private long keepAliveTimeoutMs = 5000;
+    private boolean keepAliveWithoutCalls = true;
     private long rpcDeadlineMs = 0; // Disabling deadline
 
     private String clientKeyPath;
@@ -324,9 +324,9 @@ public static class ConnectConfigBuilder {
         private String password;
         private String dbName;
         private long connectTimeoutMs = 10000;
-        private long keepAliveTimeMs = 55000;
-        private long keepAliveTimeoutMs = 20000;
-        private boolean keepAliveWithoutCalls = false;
+        private long keepAliveTimeMs = 10000;
+        private long keepAliveTimeoutMs = 5000;
+        private boolean keepAliveWithoutCalls = true;
         private long rpcDeadlineMs = 0;
         private String clientKeyPath;
         private String clientPemPath;

sdk-core/src/test/java/io/milvus/client/MilvusServiceClientTest.java

@@ -283,6 +283,17 @@ void connectParam() {
         );
     }
 
+    @Test
+    void connectParamDefaults() {
+        ConnectParam connectParam = ConnectParam.newBuilder()
+                .withHost("dummyHost")
+                .withPort(19530)
+                .build();
+        assertEquals(10000, connectParam.getKeepAliveTimeMs());
+        assertEquals(5000, connectParam.getKeepAliveTimeoutMs());
+        assertTrue(connectParam.isKeepAliveWithoutCalls());
+    }
+
     @Test
     void testConnect() {
         ConnectParam connectParam = ConnectParam.newBuilder()

sdk-core/src/test/java/io/milvus/v2/client/MilvusClientV2Test.java

@@ -485,6 +485,16 @@ private static void VerifyClass(String clsName, CheckConfig config) {
         checkGetAndSet(cls, config);
     }
 
+    @Test
+    void connectConfigDefaults() {
+        ConnectConfig config = ConnectConfig.builder()
+                .uri("http://dummyHost:19530")
+                .build();
+        Assertions.assertEquals(10000, config.getKeepAliveTimeMs());
+        Assertions.assertEquals(5000, config.getKeepAliveTimeoutMs());
+        Assertions.assertTrue(config.isKeepAliveWithoutCalls());
+    }
+
     @Test
     void testV2BuilderClasses() {
         CheckConfig config = new CheckConfig();