Loading a large number of products, such as 100,000, into the POS screen in Odoo can significantly slow down the loading time due to the amount of data being processed. Here are some strategies to optimize the performance:

1. Use Product Caching

• Caching: Implement a caching mechanism to reduce the time taken to load the products. Cached data can be loaded faster than querying the database each time.
• Indexed Caching: Cache frequently accessed products or categories, so they load instantly.

2. Lazy Loading or Pagination

• Lazy Loading: Instead of loading all products at once, load products in chunks as needed. For example, load the first 1000 products and then load more as the user scrolls.
• Pagination: Divide the product list into pages and load only the first page initially.

3. Product Search Optimization

• Search Indexing: Ensure that the product search in the POS is optimized with proper indexing in the database. This reduces the time taken to fetch product details when searching.

4. Reduce the Data Sent to the Frontend

• Minimize Data: Limit the amount of product data being sent to the frontend. Only send essential information needed for displaying the products in the POS.
• Optimize Images: Compress and reduce the size of product images loaded in the POS to improve load times.

5. Enable Product Load Limiting

• Limit Products per Session: Consider limiting the number of products loaded in a POS session. For example, load only the top-selling products by default, and allow the user to search for less frequently sold products.

6. Optimize the POS Database Queries

• Database Indexing: Ensure that the database is properly indexed, especially on the fields frequently used in the POS, such as product name, barcode, or category.
• Optimized Queries: Review and optimize the SQL queries used to fetch products in the POS. Sometimes complex queries can be simplified for better performance.

7. Use a Separate Server for POS

• Dedicated POS Server: If feasible, use a dedicated server for the POS application. This can help balance the load and improve response times.

8. Consider Product Archiving

• Archive Old Products: Archive products that are no longer sold or frequently used to reduce the total number of active products in the POS.

9. Monitor and Profile Performance

• Performance Monitoring: Use performance monitoring tools to identify bottlenecks in the POS loading process. Tools like Odoo's built-in performance profiler can help pinpoint slow queries or processes.

10. POS Configuration and Updates

• Configuration: Ensure that the POS is configured correctly with the latest updates and patches. Odoo frequently releases performance improvements.
• Odoo Version Update: If possible, check if upgrading to a newer version or applying the latest Odoo patches can help with performance.

By implementing these strategies, you should be able to reduce the loading time significantly, making the POS experience smoother and more efficient.