Book Image

Building IoT Visualizations using Grafana

By : Rodrigo Juan Hernández
5 (1)
Book Image

Building IoT Visualizations using Grafana

5 (1)
By: Rodrigo Juan Hernández

Overview of this book

Grafana is a powerful open source software that helps you to visualize and analyze data gathered from various sources. It allows you to share valuable information through unclouded dashboards, run analytics, and send notifications. Building IoT Visualizations Using Grafana offers how-to procedures, useful resources, and advice that will help you to implement IoT solutions with confidence. You’ll begin by installing and configuring Grafana according to your needs. Next, you’ll acquire the skills needed to implement your own IoT system using communication brokers, databases, and metric management systems, as well as integrate everything with Grafana. You’ll learn to collect data from IoT devices and store it in databases, as well as discover how to connect databases to Grafana, make queries, and build insightful dashboards. Finally, the book will help you implement analytics for visualizing data, performing automation, and delivering notifications. By the end of this Grafana book, you’ll be able to build insightful dashboards, perform analytics, and deliver notifications that apply to IoT and IT systems.
Table of Contents (21 chapters)
1
Part 1: Meeting Grafana
4
Part 2: Collecting Data from IoT Devices
8
Part 3: Connecting Data Sources and Building Dashboards
12
Part 4: Performing Analytics and Notifications
15
Part 5: Integrating Grafana with Other Platforms

What about WebSocket?

WebSocket takes the best of both worlds: HTTP and persistent connections.

It uses a handshake to establish communication.

The connection starts with an HTTP GET from the client. In the request, the client specifies an upgrade to WebSocket. You can see this in the following example:

GET /chat HTTP/1.1
Host: server.example.com
Upgrade: websocket
Connection: Upgrade
Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
Origin: http://example.com
Sec-WebSocket-Protocol: chat, superchat
Sec-WebSocket-Version: 13

After the request from the client, the server can accept it, as follows:

HTTP/1.1 101 Switching Protocols
Upgrade: websocket
Connection: Upgrade
Sec-WebSocket-Accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo=
Sec-WebSocket-Protocol: chat

Then, the client and the server can start to exchange data until one of them decides to close the connection.

As you can see, unlike HTTP, WebSocket allows exchanging data without the need to...