Building An #Offline Friendly #Image #Upload System — Smashing Magazine
▻https://www.smashingmagazine.com/2025/04/building-offline-friendly-image-upload-system

https://files.smashing.media/articles/building-offline-friendly-image-upload-system/1-upload-system-flow-chart.png

- The user selects an image.
The process begins by letting the user select their image.
– The image is stored locally in #IndexedDB.
Next, the system checks for network connectivity. If network connectivity is available, the system uploads the image directly, avoiding unnecessary local storage usage. However, if the network is not available, the image will be stored in IndexedDB.
– The #service_worker detects when the network is restored.
With the image stored in IndexedDB, the system waits to detect when the network connection is restored to continue with the next step.
– The background sync processes pending uploads.
The moment the connection is restored, the system will try to upload the image again.
– The file is successfully uploaded.
The moment the image is uploaded, the system will remove the local copy stored in IndexedDB.

localForage
▻http://localforage.github.io/localForage

localForage is a JavaScript library that improves the offline experience of your web app by using an asynchronous data store with a simple, localStorage-like API

Digital Democracy: OpenStreetMap Without Servers [Part 2]: A peer-to-peer #osm database
▻http://www.digital-democracy.org/blog/osm-p2p

osm-p2p is a decentralized peer-to-peer database for storing and editing OpenStreetMap nodes, ways, and relations. It includes a node.js server that implements the core functionality of the OSM API, or it can be used completely in the browser using IndexedDB for persistent storage.Someone can make edits, replicate to a USB drive, bring the USB drive to another village, replicate, and then bring the USB drive back to replicate again. The replication copies data both ways, so after this procedure both villages will have the complete dataset.

https://images.digital-democracy.org/assets/osm-p2p-sync-screencast.gif

#p2p

Jquery IndexedDB Plugin
►http://nparashuram.com/jquery-indexeddb

#html5 #client #bdd #jquery

A Simple TODO list using HTML5 IndexedDB
►http://www.html5rocks.com/en/tutorials/indexeddb/todo

IndexedDB is new in HTML5. Web Databases are hosted and persisted inside a user’s browser. By allowing developers to create applications with rich query abilities it is envisioned that a new breed of web applications will emerge that have the ability to work online and off-line.

This example code demonstrates how to create a very simple todo list manager. It is a very high level tour of some of the features available in HTML5.

#html5 #html5_apps #html5_offline #mobile #webdev #IndexedDB