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No Dockerfile, no CLI, no YAML — connect a repo, and the platform builds and deploys automatically. The dashboard is clean and self-explanatory. Developers new to cloud deployment consistently cite Render as the easiest on-ramp to production hosting.","Covers the standard web app deployment pattern well: HTTP services, workers, cron, databases, and static sites. Docker is supported, and private networking is first-class. However the platform does not offer managed Kubernetes, GPU machines, or fine-grained infrastructure control. Advanced networking, multi-region active-active, and custom VM configurations are out of scope.","Flat-rate VMs with up to 32 GB RAM and 8 CPUs are available for demanding workloads, and zero-downtime deploys keep services live during updates. The free tier's 30–50 second cold start after inactivity is a significant limitation for demos and hobby projects, but paid tiers are always-on. 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Reach for Panel if the same code needs to run in Jupyter and as a deployed app, or Dash once the dashboard gets complex enough that Streamlit's full-script rerun starts to feel slow.",{"question":641,"answer":642},"Do I need PostgreSQL, or can this just read a CSV?","For a quick prototype, pandas can read a CSV or API response directly with no database at all. PostgreSQL earns its place once the data is already there, needs to stay in sync with a live application, or is too large to reload into memory on every run.",{"question":644,"answer":645},"Which hosting option works for which framework?","Streamlit Community Cloud only runs Streamlit apps. Hugging Face Spaces, Render, and a Hetzner VPS all run any of the three frameworks: if there's a real chance the dashboard will move from Streamlit to Panel or Dash later, starting on one of those keeps the hosting decision independent of the framework one.",{"question":647,"answer":648},"Why does the dashboard query PostgreSQL every time someone moves a slider?","Because Streamlit reruns the whole script on each interaction, including the query at the top. Two built-in features fix it. st.connection manages the database connection for you, so the app doesn't open a new one on each rerun, and its query method caches results. For queries you write yourself, wrap the function that loads data in st.cache_data with a time-to-live that matches how fresh the data needs to be, for example ten minutes, so widget changes filter the cached DataFrame instead of hitting the database. Load a broad dataset once, filter in pandas, and the app stays responsive with many viewers.",{"question":650,"answer":651},"How do I connect a hosted dashboard to PostgreSQL safely?","Keep credentials out of the code and give the app as little access as possible. Store the connection details in the host's secrets manager (Streamlit Community Cloud and Hugging Face Spaces both have one) rather than committing them to the repository, and connect as a dedicated read-only database user limited to the tables the dashboard shows. Managed hosts run on the public internet, so the database has to accept connections from outside, with SSL required. If the database lives on a private network, host the dashboard next to it instead, on a VPS or a platform with private networking, so the database never needs to be exposed.",{"summary":653,"starting_cost_label":654,"has_free_tier":3,"line_items":655},"This stack is almost entirely free. 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