2. Which NoSQL data model do you need? The four main types of NoSQL data models are key-value, document, column store, and graph. Each one fits a different use case.

Even when open source goes wrong, you are not necessarily going to do better with a proprietary solution. Many development firms try to sell their proprietary systems so they can lock in clients.

If lots of data arrives in a burst, the database or a front-end program may need to buffer it in RAM while it writes to permanent storage, to avoid data loss.

Redash can create dashboards from various data sources that display charts, pivot tables, cohorts, boxplots, counters, funnels, maps, sankeys, sunbursts and word clouds. Here’s how to use it.

Use a DSN-less connection (i.e. with no data source defined on the server) to connect the program to your database for simplicity. You will need to use HTML to format the data.