Zero-Downtime Deployment Basics for Laravel

A professional deployment avoids downtime and surprises.

    Key ideas:
    - deploy code first
    - run compatible migrations
    - warm caches
    - restart workers gracefully
    
    ## Safe deployment flow
    
    ```mermaid
    flowchart TD
      A[Deploy New Code] --> B[Cache config/routes]
      B --> C[Run Safe Migrations]
      C --> D[Restart Queue Workers]
      D --> E[Health Check]
    ```
    
    A crucial rule: migrations should be backward-compatible when you have multiple running instances.
    
    In the next tutorial, we will implement feature flags for controlled rollouts.