In any programming languages and processing logic you need to store information and retrieve them. In Node-Red we are processing data in messages separately and somehow data needs to be stored in between these messages. This is what the context stores are used for.
In this video we learn how to use the context in Node-Red through some home automation examples. Also learn the different context stores, persistent storage option, get tips and trick by going through examples and talk about don't dos.
Chapters:
0:00 Intro
1:03 Agenda
2:49 The basics
5:18 Store and read data to/from context
8:27 Compare data to last value
10:14 Min/Max calculation
13:28 Message counter
15:04 Time activated motion sensor
17:45 Thermostat example
21:03 Delete context data
22:06 Storage options/Persistent storage
25:52 Context in function node
36:23 Don't dos
39:31 Outro
