disable byte-based auto-flush by default

Author: jerrinot

core/src/main/java/io/questdb/client/Sender.java

@@ -557,7 +557,7 @@ final class LineSenderBuilder {
         private static final int DEFAULT_TCP_PORT = 9009;
         private static final int DEFAULT_UDP_PORT = 9007;
         private static final int DEFAULT_WEBSOCKET_PORT = 9000;
-        private static final int DEFAULT_WS_AUTO_FLUSH_BYTES = 128 * 1024; // 128KB
+        private static final int DEFAULT_WS_AUTO_FLUSH_BYTES = 0;
         private static final long DEFAULT_WS_AUTO_FLUSH_INTERVAL_NANOS = 100_000_000L; // 100ms
         private static final int DEFAULT_WS_AUTO_FLUSH_ROWS = 1_000;
         private static final int MIN_BUFFER_SIZE = AuthUtils.CHALLENGE_LEN + 1; // challenge size + 1;
@@ -731,7 +731,7 @@ public LineSenderBuilder asyncMode(boolean enabled) {
          * <br>
          * This is only used when communicating over WebSocket transport.
          * <br>
-         * Default value is 128KB.
+         * Default value is 0, which disables byte-based auto-flush.
          *
          * @param bytes maximum bytes per batch
          * @return this instance for method chaining

core/src/main/java/io/questdb/client/cutlass/qwp/client/QwpWebSocketSender.java

@@ -68,7 +68,7 @@
  * Configuration options:
  * <ul>
  *   <li>{@code autoFlushRows} - Maximum rows per batch (default: 1000)</li>
- *   <li>{@code autoFlushBytes} - Maximum bytes per batch (default: 128KB)</li>
+ *   <li>{@code autoFlushBytes} - Maximum bytes per batch (default: disabled)</li>
  *   <li>{@code autoFlushIntervalNanos} - Maximum age before auto-flush (default: 100ms)</li>
  * </ul>
  * <p>
@@ -89,7 +89,7 @@
  */
 public class QwpWebSocketSender implements Sender {
 
-    public static final int DEFAULT_AUTO_FLUSH_BYTES = 128 * 1024; // 128KB
+    public static final int DEFAULT_AUTO_FLUSH_BYTES = 0;
     public static final long DEFAULT_AUTO_FLUSH_INTERVAL_NANOS = 100_000_000L; // 100ms
     public static final int DEFAULT_AUTO_FLUSH_ROWS = 1_000;
     public static final int DEFAULT_IN_FLIGHT_WINDOW_SIZE = 128;