Application Updates: Improvements to Image Processing, CDN, & Deployment
What developments have taken place today?
Today’s commits focused on improving the stability, logging, and functionality of several core application components – the Lighthouse API, the CDN, image processing, and user profile management. Significant improvements were made to error handling, reporting, and deployment processes.
The Lighthouse API received substantial updates, including comprehensive logging with detailed operational information, enhanced URL validation for improved security, and a more efficient temporary file management system using server-side files. The addition of try...catch blocks provides robust error handling and graceful shutdown capabilities via SIGTERM. Report size validation was also implemented to prevent oversized reports from being sent back to clients. Furthermore, the API now uses Puppeteer with explicit configuration changes to optimize performance and security.
The CDN underwent a modernization effort by shifting from an older resizing method (imaging) to the govips library, resulting in enhanced image processing capabilities and organization. A dedicated directory was created for resized images, and the image handling function itself remains unchanged, streamlining operations. Additionally, HTTPS support with HTTP/2 was added for both cdn.remotedaemon.com and www.cdn.remotedaemon.com.
Several improvements were also made to service monitoring and management. The order of heartbeat checks for services was standardized alphabetically for consistent health assessment. A heartbeat mechanism was implemented using Redis, ensuring continuous service monitoring. The Docker configuration now includes restart policies and healthcheck configurations, guaranteeing service availability. Furthermore, the deployment process for the cdn component has been automated with Supervisor, simplifying maintenance and ensuring automatic restarts.
Finally, changes were introduced to user profile management, incorporating a new package for generating CDN image paths, integrating a FileRepository dependency, updating database schema (adding a file_id column), and modifying template rendering to display profile pictures. These improvements enable efficient image delivery through the CDN and seamless integration with user profiles.
These changes collectively represent significant progress in enhancing application reliability, performance, maintainability, and user experience by implementing robust logging, streamlining processes, and improving security measures.