@Bean
    public HttpClient httpClient() {
        return HttpClientBuilder.create()
                .setConnectionManager(httpClientConnectionManager())
                .setKeepAliveStrategy(CustomConnectionKeepAliveStrategy.INSTANCE)
                .build();
    }
Get the timeout time of the connection from the connection pool,
and throw ConnectionPoolTimeoutException when timeout
inlong-manager/manager-dao/src/test/java/org/apache/inlong/manager/dao/RestTemplateConfig.java