dash-common-issues

name	dash-common-issues
description	Sub-skill of dash: Common Issues.
version	1.0.0
category	data-analysis
type	reference
scripts_exempt	true

Common Issues

Common Issues

Issue: Callback not firing

# Check component IDs match exactly
# Verify Input/Output/State decorators
# Check for circular dependencies

Issue: Slow initial load

# Use loading states
dcc.Loading(
    children=[dcc.Graph(id="graph")],
    type="circle"
)

Issue: Memory leaks

# Clear caches periodically
# Use background callbacks for long operations
# Limit data in client-side stores

Issue: Multiple callback outputs

# Use allow_duplicate=True for same output
@callback(
    Output("output", "children", allow_duplicate=True),
    Input("button2", "n_clicks"),
    prevent_initial_call=True
)