Using NGINX as a load balancer for a Go-based API in Docker containers
h/t to @zerefwayne for the idea🔥🔥🔥!
PURPOSE
This repo demonstrates how to use NGINX as a reverse proxy/load balancer serving a web application based on an API written in Go, and running in Docker containers 🔀.
(It also demos how to use GitHub Actions for scalable CI/CD) 📈.
DOCUMENTATION
You can find the full explanation for the original repo on codeburst.
USAGE
Spin-up the containers hosting the API server - there are 5 by default, but can be scaled up/down:
docker-compose up -d --build
...then make an HTTP request against the load balancer:
curl -X GET localhost/hi
DOCKER HUB IMAGE
You can spin-up a pre-built image on Docker Hub by pulling the image to your server:
docker pull jasonsalas/nginx-loadbalancer-go-api:latest
...or, you can also run this load balancer application on your server as a pre-built disk image by running the following commands in a terminal:
docker-compose -f docker-compose-for-docker-hub.yml up -d
Then, you'll need to verify which randomized port the API server your server is listening on (it'll be bound to port 5000 on the image):
docker-compose ps -a
For example, let's assume the port is 12345. Use this port to make a HTTP request to the load balancer's endpoint:
curl -X GET localhost:12345/hi