Description of the issue

=========================

Hi Team,

While integrating the Kong Gateway, we are facing an issue with backend API calls. Sometimes the requests are processed successfully, but other times they fail.

Flow:

When a request comes from the frontend, it goes through the Kong Gateway (deployed on Railway Cloud). The gateway should then route the request to our backend service API. However, the behavior is inconsistent — some requests work as expected, while others fail.

Could you please provide guidance or suggestions on how to fix this issue?

Railway environment : Production

Error Logs

========

Getting below message

requestId:

"9CPeketYRk6STd52DcO5xA"

timestamp:

"2025-09-22T15:20:56.713906654Z"

method:

"GET"

path:

"/employees"

host:

"cloom-crud-kong-gateway-production.up.railway.app"

httpStatus:

499

upstreamProto:

"HTTP/1.1"

downstreamProto:

"HTTP/2.0"

responseDetails:

"client has closed the request before the server could send a response"

totalDuration:

299732

upstreamAddress:

"http://[fd12:adcb:5716:0:9000:48:e846:d438]:8000"

clientUa:

"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36"

upstreamRqDuration:

299732

txBytes:

0

rxBytes:

771

srcIp:

"49.206.130.220"

edgeRegion:

"asia-southeast1-eqsg3a"

upstreamErrors:

"[{"deploymentInsta…

Link to GitHub repo/code or template you're using, if applicable : Its not applicable since its a private repo

CLOOM-CRUD-Kong-Gateway

]=======================

Docker file code

===========

FROM kong:3.3

COPY kong.yml /etc/kong/kong.yml

EXPOSE 8000 8443 8001 8444

# Railway dynamic PORT

ENV KONG_PROXY_LISTEN=0.0.0.0:${PORT:-8000}

ENV KONG_DATABASE=off

ENV KONG_DECLARATIVE_CONFIG=/etc/kong/kong.yml

CMD ["kong", "docker-start"]

CLOOM-CRUD-Kong-Gateway

======================

kong.yml file code

===========

formatversion: "2.1"

services:

- name: employees-service

protocol: https

host: cloom-crud-backend-production-0113.up.railway.app

port: 443

path: /api

connect_timeout: 10000

read_timeout: 10000

write_timeout: 10000

routes:

- name: employees-route

paths:

- /employees$

strip_path: false

regex_priority: 10

plugins:

- name: cors

config:

origins: ["*"]

methods: ["GET", "POST", "OPTIONS"]

headers: ["Accept", "Authorization", "Content-Type"]

credentials: true

max_age: 3600