Distributed Deployment

To deploy your application to multiple servers, You need to change the app configuration to support distributed deployment. ## Session sharing To enable session sharing between servers, you need to configure your application to use a shared session store. You can use a Redis server to store session data, then configure your application to use it. **.env** ```bash YAO_SESSION_STORE=redis YAO_SESSION_HOST=your-redis-server-ip YAO_SESSION_PORT=yout-redis-server-port YAO_SESSION_PASSWORD=your-redis-server-password YAO_SESSION_DB=5 # Redis database number ``` Make sure each server has access to the Redis server and the same session configuration. ## Database Connection If you're using a database, you need to configure the database connection for each server. **.env** ```bash YAO_DB_DRIVER=mysql YAO_DB_PRIMARY="webuser:webpass@tcp(127.0.0.1:3306)/website?charset=utf8mb4&parseTime=True&loc=Local" YAO_DB_SECONDARY="webuser:webpass@tcp(127.0.0.1:3306)/website?charset=utf8mb4&parseTime=True&loc=Local" # Optional, Read-Replica ``` Make sure each server has access to the database server and the same database configuration. ## Data Synchronization If your application writes data to the filesystem, you need to synchronize the data between servers. or you can use a shared storage solution like NFS, GlusterFS, or AWS EFS to store the data. **.env** ```bash YAO_DATA_ROOT=/path/to/shared/storage ``` ## Load Balancer To distribute traffic across multiple servers, you can use a load balancer. A load balancer evenly distributes incoming requests to various servers using different algorithms such as Round-Robin, Least Connections, or IP Hash. You can choose between a hardware load balancer or a software-based solution like NGINX, HAProxy, or AWS ELB. **NGINX Configuration** ```nginx http { upstream app_servers { # List of your application servers server app_server_1_ip:5099; server app_server_2_ip:5099; server app_server_3_ip:5099; # Optional: configure load balancing algorithms # least_conn; # Least connections method # ip_hash; # IP hash method for session persistence } server { listen 80; # Port the load balancer will listen on server_name your-domain.com; # Your domain or IP address location / { proxy_pass http://app_servers; # Forward traffic to app servers proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; } } } ```