{"version":"1.0","type":"rich","title":"Async node-postgres sample code","description":"This example demonstrates a web server that tracks and reports visitor counts using an asynchronous PostgreSQL workflow. It uses Express routes and the `node-postgres` library to insert a timestamp into a `visit` table and then query the total count, returning the result as an HTTP response. The code highlights both modern async/await syntax with `await query(...)` and a callback-style alternative using `errto` for error handling, showing two equivalent approaches for database interactions.","provider_name":"VizHub AI Studio","provider_url":"https://next.vizhub.com","html":"<iframe src=\"https://next.vizhub.com/viz/gist-341d0c4e66da5935c89b420d789f6643?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"1\"></iframe>","width":960,"height":500,"cache_age":3600}