504 Gateway Time-out issue in Spring Boot Rest call for heavy record(more than 80K)

Question

I am getting 504 Gateway Time-out issue Spring Boot Rest call using HTTP GET call for heavy record(more than 80K), I am calling other service to get data using RestTemplate object resClient, code as below:

public ResponseEntity<String> getData(String endPointUrl, Map<String, Object> parameterMap, String smToken) throws Exception {
        HttpHeaders headers = new HttpHeaders();
        headers.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
        headers.add("Cookie", smToken);
        //headers.setContentType(MediaType.APPLICATION_JSON_UTF8);
        HttpEntity<Map<String, Object>> entity = new HttpEntity<Map<String, Object>>(parameterMap, headers);
        ResponseEntity<String> responseEntity = null;
        try {
            SSLUtil.turnOffSslChecking();
            LOGGER.info("Start call to end point : " +endPointUrl+ " at :"+ (new Date().toString()) );
            //resClient.getMessageConverters()
            //.add(0, new StringHttpMessageConverter(Charset.forName("UTF-8")));
            responseEntity = resClient.exchange(endPointUrl, HttpMethod.POST, entity,String.class);
            LOGGER.info("End of call to end point : " +endPointUrl+ " at :"+ (new Date().toString()) );
            LOGGER.debug("Response from end point: " + responseEntity);
        } catch (Exception e) {
            LOGGER.error("Exception while making a http call to " + endPointUrl,e);
            throw e;
        }

        return responseEntity;
    }

While debugging I am seeing Response from other service call It takes more than 4 minutes, but rather than waiting it by that time to get response it use to come out only after 3 minutes. How can we make it to wait for response coming from other service call?

I tried to resolve this issue with increasing timeout time to 5 minutes using attribute server.connection-timeout=300000 in application.properties, but I am getting empty response. I am not sure If this is right approach or not. Please help me on this issue.

Answer 1

504 Gateway Time-out issue is generally thrown by proxy server that means server is closing connection. If client close connection then you will get Connectiontimeout error.