Redis in-memory storage
Recollection
© Lead Image © redspruce,123RF.com
Include binary data and image files in your IoT projects with Redis, an open source, in-memory data structure store.
For many Internet of Things (IoT) projects, a message-queuing system like MQTT (message-queuing telemetry transport) is all you need to connect sensors, devices, and graphic interfaces. However, if you have requirements for high throughput or you are storing special data types (e.g., binary data or image files), you should take a look at Redis.
Redis (Remote directory server) [1] is an open source, in-memory data structure store that can be used as a database, cache, and message broker. It supports a wide range of data structures, such as strings, hashes, lists, sets, bitmaps, HyperLogLogs, and geospatial indexes. Redis servers can be loaded locally, or they are available as web-hosted solutions. Redis libraries are available for a wide variety of programming languages.
In this article, I show you how to set up a Redis system with two examples. The first is a flame scanner that connects an Arduino module to a Node-RED web dashboard. The second example is a Raspberry Pi weather station, in which a webcam image is stored in a Redis server and a PHP web page shows the data.
[...]
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
US / Canada
UK / Australia
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
Support Our Work
Linux Magazine content is made possible with support from readers like you. Please consider contributing when you’ve found an article to be beneficial.
News
-
Linux Kernel 6.14 Released
The latest Linux kernel has arrived with extra Rust support and more.
-
EndeavorOS Mercury Neo Available
A new release from the EndeavorOS team ships with Plasma 6.3 and other goodies.
-
Fedora 42 Beta Has Arrived
The Fedora Project has announced the availability of the first beta release for version 42 of the open-source distribution.
-
Dash to Panel Maintainer Quits
Charles Gagnon has stepped away as maintainer of the popular Dash to Panel Gnome extension.
-
CIQ Releases Security-Hardened Version of Rocky Linux
If you're looking for an enterprise-grade Linux distribution that is hardened for business use, there's a new version of Rocky Linux that's sure to make you and your company happy.
-
Gnome’s Dash to Panel Extension Gets a Massive Update
If you're a fan of the Gnome Dash to Panel extension, you'll be thrilled to hear that a new version has been released with a dock mode.
-
Blender App Makes it to the Big Screen
The animated film "Flow" won the Oscar for Best Animated Feature at the 97th Academy Awards held on March 2, 2025 and Blender was a part of it.
-
Linux Mint Retools the Cinnamon App Launcher
The developers of Linux Mint are working on an improved Cinnamon App Launcher with a better, more accessible UI.
-
New Linux Tool for Security Issues
Seal Security is launching a new solution to automate fixing Linux vulnerabilities.
-
Ubuntu 25.04 Coming Soon
Ubuntu 25.04 (Plucky Puffin) has been given an April release date with many notable updates.