Different applications of data streaming apart from multimedia content

Exploring the various applications of streaming, particularly when sending data from a server to a visual client such as a web browser or an application, has sparked my curiosity. While I grasp the fundamental idea of transmitting data in chunks rather than waiting for it to fully arrive, I wonder about additional scenarios where this method could be beneficial. For instance, aside from loading audio, video, or images, are there other practical use cases for streaming textual data or JSON files?

javascriptnode.jsstreamstreaming

Answer №1

When faced with the task of extracting millions of records from a MySQL table and saving them into a CSV file without running out of memory, I opted to use streaming. Instead of attempting to retrieve all records at once using a raw findAll query, which could lead to memory issues as the table grows, I implemented multiple queries each fetching about 50k records by utilizing limit and offset parameters.

After retrieving each chunk of data, I streamed it out and then repeated the process recursively until all records were extracted. This approach allowed me to efficiently handle large datasets and prevent memory overload. Users could easily download the resulting CSV file by hitting a designated REST endpoint.

If interested, there's an article that discusses a similar method but for PostgreSQL using the COPY operator: https://medium.com/geoblinktech/how-to-export-a-postgresql-table-as-csv-with-node-js-streams-578d53434e80

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