#Tutorial

WebSockets look to be supported reasonably well in Cache. I have yet to use them in production so I am wondering how well it has worked for other developers.

In particular what happens when the browser does not support WebSockets, or when a firewall blocks the connection.

Have you had to write your own long polling fall-back?

I've read the documentation and found this interesting article...

https://community.intersystems.com/post/asynchronous-websockets-quick-tutorial

Hey there,

I posted a reply to the recent video https://community.intersystems.com/post/new-video-building-data-driven-web-apps#comment-132511
with a slew of questions. Wondering if someone can take a look a address my questions on that post or on this new thread.

Hi this is my first post, so a little about my background. I've been programming in PHP/JavaScript for about 10 years.
I've got quite a bit of knowledge surrounding object orientated programming and know the basics.

Last year I looked into the Mirth integration engine and did some work around that.

I've now moved jobs and I'm doing some work (surprise, surprise) with Ensemble.

InterSystems IRIS supports publish and subscribe message delivery. Publish and subscribe refers to the technique of routing a message to one or more subscribers based on the fact that those subscribers have previously registered to be notified about messages on a specific topic.

This article demonstrates how several InterSystems IRIS capabilities can work together:

• Publish/Subscribe
• Email
• Workflow
• Alerts
• PPG (that's general capability though)

In this article we would send emails about:

• New workflow tasks
• Unassigned workflow tasks
• Uncompleted workflow tasks
• Ensemble alerts

Email recipients would be determined using Publish/Subscribe operation and each user would receive only digest email whenever possible.