Exploring a Juno’s Web3 Dapp Architecture

I developed a web-based drawing application — icdraw.com — on the Internet Computer blockchain in just a single weekend, thanks to the smooth integration provided by Juno 🛰️. In this blog post, I present some insights into the architecture of the front-end application I’ve built.

Architecture

From a fundamental perspective, developing a JavaScript frontend application running entirely on blockchain using Juno does not differ significantly in terms of architecture compared to traditional Web2 serverless solutions.

At the heart of the application lies a library responsible for evaluating the user’s authentication status, enabling or disabling access to different features based on this assessment. Each of these features has the capability to interact with and manipulate data and files on the blockchain, allowing for read, write, update, or delete operations. The only minor distinction is that modifying a state on the blockchain introduces a slight delay of a few seconds compared to saving data on a centralized server. This delay is due to the requirement of certifying the information through a consensus round.