Improving SQL Query Performance for Accessibility Features in a Cross-Platform Mobile App
I've been researching this but I'm having a hard time understanding I'm trying to configure I'm stuck trying to I'm stuck on something that should probably be simple... Currently developing a cross-platform mobile application with a focus on enhancing accessibility for users with disabilities. Part of this involves retrieving a large dataset from a PostgreSQL database, where I've noticed performance lags during data loading. The app uses React Native for the frontend, with the backend set up using Express.js and Sequelize ORM. To optimize the experience, I implemented pagination in my SQL queries; however, when fetching data, accessibility features like screen reader compatibility seem to introduce additional load times. Here's the query I've been using: ```sql SELECT id, title, description FROM products WHERE available = true ORDER BY created_at DESC LIMIT 10 OFFSET $1; ``` While this works, it feels sluggish. I initially tried indexing the `available` column, which improved query speed, yet the records fetched still take about 2-3 seconds due to the size of the dataset. Additionally, I've explored creating a view to summarize the data that screens readers might focus on, but it introduces complexity in maintaining the view with every data change. Here's what the view looks like: ```sql CREATE VIEW accessible_products AS SELECT id, title, description FROM products WHERE available = true; ``` This approach did not yield significant improvements either. I also considered using `LIMIT` with a `WHERE` clause to filter results better, but that didn't change the timing noticeably. Are there specific SQL optimizations or best practices to improve loading times for accessibility features without compromising user experience? Could restructuring the data model help? Any insights or suggestions would be appreciated! What's the best practice here? Am I approaching this the right way? I'm working with Sql in a Docker container on Debian. Thanks for taking the time to read this! Thanks for taking the time to read this! This is my first time working with Sql latest. I'd be grateful for any help.