Docker Laravel Load Balancing

How it works

This project demo how to use HAProxy as a load balancing stands in front of Nginx webservers which serve Laravel Application behind

Flow:

Request -> HAProxy -> Nginx instances -> Laravel app

How to run

From root project, run:

docker-compose up --build --scale webserver=3

Option --scale webserver=3 will create 3 instances of webserver service (you can choose any number of instances you like)

Then Run the following command to setup .env file:

cp .env.example .env
docker-compose exec app php artisan key:generate

Now access localhost:8000 and try refresh browser, each time you'll see your request is served by a different webserver instance

Deep dive

Laravel Horizon

Laravel Horizon is running at localhost:8000/horizon

You can disable it by comment ENABLE_HORIZON in Dockerfile

Laravel Task Scheduling

Laravel Task Scheduling is configured at app/Console/Kernel.php and auto run for you, you can check by opening storage/log/laravel.log, if you see Scheduler is running, that means everything is fine

You can disable it by comment ENABLE_CRONTAB in Dockerfile

Database management

Database management server is running at localhost:8080