Building a SaaS application on Railway

Building a SaaS application on Railway involves creating a software as a service (SaaS) business that provides value to users without requiring them to install or maintain the software. A SaaS can be as simple as a Slack Bot or a ToDo app, but it can also be a full-blown software suite. Building a SaaS application requires understanding project requirements and expectations, creating a Minimal Viable Product (MVP) to test the idea, choosing a tech stack that provides the best developer experience, and deploying the application on Railway. The application will have features such as job posting pages for hiring managers and job seeker pages, authentication using Clerk, and a resource route for downloading resumes. To deploy the application on Railway, a script is added to the package.json file to run database migration in production before starting the server, and the application is deployed by pushing code to a GitHub repository and creating a new account on Railway. The deployment will crash due to missing credentials, but attaching a persistent volume and adding environment variables fixes this issue. Finally, a custom domain is added using Cloudflare for DNS setup and CDN proxy, which provides DDoS protection, bot detection, rate limiting, and CDN caching.