Uibuilder: How to send data when a client connects or reloads the page


#1

Please note the new page in the uibuilder WIKI that explains how to immediately send data to new clients connecting to the page.

This is great with the new file-based global variables in Node-RED as it is very easy to save the data that you want to have sent to a new client when they connect (or when they reload the page in the browser).

The WIKI entry has an example flow and explains the issue and the resolution.

Combine this with the entry on caching and cache replay as they are related. However, using the new global variable features for retaining variables so they are recovered after a restart reduces the need for caching.