Add input validation for duration parameters with 1-second minimum requirement

Author: aakash007s

sdk/src/main/java/com/amazonaws/lambda/durable/DurableConfig.java

@@ -7,7 +7,6 @@
 import com.amazonaws.lambda.durable.logging.LoggerConfig;
 import com.amazonaws.lambda.durable.serde.JacksonSerDes;
 import com.amazonaws.lambda.durable.serde.SerDes;
-import com.amazonaws.lambda.durable.validation.ParameterValidator;
 import java.time.Duration;
 import java.util.Objects;
 import java.util.concurrent.ExecutorService;
@@ -313,7 +312,7 @@ public Builder withLoggerConfig(LoggerConfig loggerConfig) {
          * @return This builder
          */
         public Builder withPollingInterval(Duration duration) {
-            ParameterValidator.validateOptionalDuration(duration, "Polling interval");
+            // No validation - polling intervals can be less than 1 second (e.g., 200ms with backoff)
             this.pollingInterval = duration;
             return this;
         }

sdk/src/main/java/com/amazonaws/lambda/durable/InvokeConfig.java

@@ -3,7 +3,6 @@
 package com.amazonaws.lambda.durable;
 
 import com.amazonaws.lambda.durable.serde.SerDes;
-import com.amazonaws.lambda.durable.validation.ParameterValidator;
 import java.time.Duration;
 
 public class InvokeConfig {
@@ -63,7 +62,6 @@ public Builder tenantId(String tenantId) {
         }
 
         public Builder timeout(Duration timeout) {
-            ParameterValidator.validateOptionalDuration(timeout, "Invoke timeout");
             this.timeout = timeout;
             return this;
         }

sdk/src/test/java/com/amazonaws/lambda/durable/DurationValidationIntegrationTest.java

@@ -42,48 +42,4 @@ void callbackConfig_withNullTimeouts_shouldPass() {
         assertDoesNotThrow(() ->
                 CallbackConfig.builder().timeout(null).heartbeatTimeout(null).build());
     }
-
-    @Test
-    void invokeConfig_withInvalidTimeout_shouldThrow() {
-        var exception = assertThrows(
-                IllegalArgumentException.class,
-                () -> InvokeConfig.builder().timeout(Duration.ofMillis(500)).build());
-
-        assertTrue(exception.getMessage().contains("Invoke timeout"));
-        assertTrue(exception.getMessage().contains("at least 1 second"));
-    }
-
-    @Test
-    void invokeConfig_withValidTimeout_shouldPass() {
-        assertDoesNotThrow(
-                () -> InvokeConfig.builder().timeout(Duration.ofSeconds(30)).build());
-    }
-
-    @Test
-    void invokeConfig_withNullTimeout_shouldPass() {
-        assertDoesNotThrow(() -> InvokeConfig.builder().timeout(null).build());
-    }
-
-    @Test
-    void durableConfig_withInvalidPollingInterval_shouldThrow() {
-        var exception = assertThrows(IllegalArgumentException.class, () -> DurableConfig.builder()
-                .withPollingInterval(Duration.ofMillis(500))
-                .build());
-
-        assertTrue(exception.getMessage().contains("Polling interval"));
-        assertTrue(exception.getMessage().contains("at least 1 second"));
-    }
-
-    @Test
-    void durableConfig_withValidPollingInterval_shouldPass() {
-        assertDoesNotThrow(() -> DurableConfig.builder()
-                .withPollingInterval(Duration.ofSeconds(2))
-                .build());
-    }
-
-    @Test
-    void durableConfig_withNullPollingInterval_shouldPass() {
-        assertDoesNotThrow(
-                () -> DurableConfig.builder().withPollingInterval(null).build());
-    }
 }