Important Notice - Forums is archived
To simplify things and help our users to be more productive, we have archived the current forum and focus our efforts on helping developers on Stack Overflow. You can post new questions on Stack Overflow or join our Discord channel.

Vaadin lets you build secure, UX-first PWAs entirely in Java.
Free ebook & tutorial.
Vaadin table performance
I'm prototyping Vaadin for use in our application but I'm hitting a performance problem with tables. If I have ~200 products in the result set and they are divided over a number of categories (and each category having a detail-table) I end up with a wall-clock-roundtrip of over 30 seconds(!).
The category header is a HorizontalLayout with two labels and a Table and the category products is a table. The number of items in the category header detail table is usually 1-3 and the products in a category 1-5. The total number of tables is around 300 which is sub-optimal but is there any way of optimizing performance (fixing withs etc)?
Thanks in advance,
Nik
Even dropping the header information and using a Grid for the products takes ~20sec