10 Principles for Keeping the Vibe while Coding Streamlit Apps
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A practical guide covering 10 core principles for building Streamlit apps correctly, especially when using AI-assisted (vibe) coding. Topics include understanding Streamlit's full-script rerun model, using session state for persistence, caching expensive operations with @st.cache_data and @st.cache_resource, managing secrets securely, handling empty/error states, batching inputs with forms, assigning unique widget keys in loops, showing progress indicators, using @st.fragment for partial reruns, structuring projects for deployment, and leveraging Streamlit's built-in components before writing custom solutions.
Table of contents
1. Understand that your script reruns completely on every interaction2. Cache expensive operations, always3. Never hardcode secrets: use st.secrets4. Handle empty and error states gracefully5. Use forms when you need to batch inputs6. Add unique keys to widgets in loopsGet Chanin Nantasenamat ’s stories in your inbox7. Show progress for long operations8. Use @st.fragment for partial reruns9. Structure your project for deployment from the start10. Use Streamlit’s built-in features before custom solutionsWrapping UpResources28 Impressions