time.Sleep(time.Second * 40)
	// Assert whether the connection pool of tx is successfully converted to the *gorm.PreparedStmtDB type.
	AssertEqual(t, ok, true)
	// Assert whether the number of statement keys stored in the PreparedStmtDB is 0 after 40 seconds.
	// If it is not 0, it means the statements in the cache have not expired as expected.
	AssertEqual(t, len(conn.Stmts.Keys()), 0)

```
curl -v $(go run presigned.go)
...
...
> GET /functionbucket/testobject?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=minioadmin%2F20230205%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20230205T173023Z&X-Amz-Expires=1000&X-Amz-SignedHeaders=host&lambdaArn=arn%3Aminio%3As3-object-lambda%3A%3Atoupper%3Awebhook&X-Amz-Signature=d7e343f0da9d4fa2bc822c12ad2f54300ff16796a1edaa6d31f1313c8e94d5b2 HTTP/1.1
> Host: localhost:9000
> User-Agent: curl/7.81.0

    /*
     * (non-Javadoc)
     *
     * @see org.seasar.extension.timer.TimeoutTarget#expired()
     */
    @Override
    public void expired() {
        if (clientConnectionManager == null) {
            logger.warn("clientConnectionManager is null.");
            return;
        }

        try {
            // Close expired connections
            clientConnectionManager.closeExpired();

    /*
     * (non-Javadoc)
     *
     * @see org.seasar.extension.timer.TimeoutTarget#expired()
     */
    @Override
    public void expired() {
        if (clientConnectionManager == null) {
            logger.warn("clientConnectionManager is null.");
            return;
        }

        try {
            // Close expired connections
            clientConnectionManager.closeExpiredConnections();

}
```

These credentials can now be used to perform MinIO API operations, these credentials automatically expire in 1hr. To understand more about credential expiry duration and client grants STS API read further [here](https://github.com/minio/minio/blob/master/docs/sts/client-grants.md).

## Explore Further

        public MonitorTarget(final JobLog jobLog) {
            this.jobLog = jobLog;
        }

        /**
         * Called when the timeout expires. Updates the job log if the job is still running.
         */
        @Override
        public void expired() {
            if (jobLog.getEndTime() == null) {
                jobLog.setLastUpdated(ComponentUtil.getSystemHelper().getCurrentTimeAsLong());

  /** If a cookie incorrectly defines multiple 'Expires' attributes, the last one defined wins.  */
  @Test fun lastExpiresAtWins() {
    assertThat(
      parseCookie(
        0L,
        url,
        "a=b; " +
          "Expires=Thu, 01 Jan 1970 00:00:02 GMT; " +
          "Expires=Thu, 01 Jan 1970 00:00:04 GMT; " +
          "Expires=Thu, 01 Jan 1970 00:00:01 GMT; " +
          "Expires=Thu, 01 Jan 1970 00:00:03 GMT",

                DirectoryCacheScope.IMMEDIATE_CHILDREN);

        // Make the cache entry expired
        DirectoryCacheEntry entry = directoryLeaseManager.getCacheEntry(directoryPath);
        entry.setMaxAge(1); // 1ms to expire immediately
        try {
            Thread.sleep(10);
        } catch (InterruptedException e) {
            // Ignore
        }

    }

    @Test
    public void test_expired_method_exists() throws Exception {
        assertNotNull(HotThreadMonitorTarget.class.getMethod("expired"), "expired method should exist");
    }

    @Test
    public void test_expired_method_can_be_called() {
        try {
            target.expired();
        } catch (Exception e) {
            // Expected that it may fail due to missing dependencies in test environment

	if allAtEOF {
		return io.EOF
	}
	return nil
}

// triggerExpiryAndRepl applies lifecycle and replication actions on the listing
// It returns true if the listing is non-versioned and the given object is expired.
func triggerExpiryAndRepl(ctx context.Context, o listPathOptions, obj metaCacheEntry) (skip bool) {
	versioned := o.Versioning != nil && o.Versioning.Versioned(obj.name)

	// skip latest object from listing only for regular