aklein-1s opened a new issue, #34673:
URL: https://github.com/apache/superset/issues/34673
### Bug description
I'm creating a very simple handlebar chart to test this component and I
noticed that I have big delays to render it. It's rather fluid with 1 column,
but when I add 3 column, the browser freeze during about 10 seconds, and after
that, it is very slow.
I think I have understood the problem, when I have one column, I choose the
"aggregate" query mode, and I have only 18 rows to render, but if I choose "raw
records", all records are displayed, so it freeze too.
My example :
`<table class="events">
{{#each data}}
<tr>
<td class="icon"><!--<img
src="/static/assets/images/superset-logo-horiz.png" />--></td>
<td class="content">
<dl>
<dt><strong>{{this.type_evt}}</strong></dt>
<dd></dd>
</dl>
</td>
</tr>
{{/each}}
</table>`
So, I need server pagination for handlebars to avoid this, but I found [this
thread](https://github.com/apache/superset/issues/29657) which indicates that
the server pagination doesn't work on handlebar.
Is there a workaround about that ?
I don't know how to use handlebars without server pagination, but I guess it
isn't possible with good performance, or it requires a small dataset.
Is it planned to add server pagination for the handlebars ?
Thank you.
### Screenshots/recordings
_No response_
### Superset version
5.0.0
### Python version
3.9
### Node version
16
### Browser
Firefox
### Additional context
_No response_
### Checklist
- [x] I have searched Superset docs and Slack and didn't find a solution to
my problem.
- [x] I have searched the GitHub issue tracker and didn't find a similar bug
report.
- [x] I have checked Superset's logs for errors and if I found a relevant
Python stacktrace, I included it here as text in the "additional context"
section.
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