Overview [1] [2]#

Service Worker are typically a component of a Progressive Web Application and provide a scriptable network proxy in the web browser to manage the web/HTTP Requests programmatically.

Service Workers lie between the network and device to supplement the content.

Service Worker are capable of using the cache mechanisms efficiently and allow error-free behavior during offline periods.

Service Workers are an incredibly powerful, and equally as confusing, technology behind a Progressive Web Application

Service Worker is a script that your browser runs in the background, separate from a Web page, opening the door to features that don't need a Web page or user interaction.

Properties of Service Workers#

• Trigger and keep alive by the relationship to the events, not by the documents
• Generic in nature
• Event-driven with time limit scripting contexts and running at the origin
• With natural endpoints for a wide range of runtime services
• Have a state
• With a script URL
• Containing registration
• Allocated ID or UUID
• With life cycle events
• Have script resource map
• Can skip waiting for the flags!! Benefits of Service Workers
• Capable of handling the push notification easily
• Synchronization of data in the background
• Capable of responding to the resource requests originate elsewhere
• Receive centralized updates!! More Information

There might be more information for this subject on one of the following:

• Application Shell Architecture
• Fetch API
• Progressive Web Application
• XMLHttpRequest

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• [#1] - What are Progressive Web Apps? - based on information obtained 2017-08-02-
• [#2] - Progressive_web_app - based on information obtained 2017-08-02-