Solved

Can I open a persistent conection using cfhttp?

Posted on 2009-04-14
3
250 Views
Last Modified: 2013-12-24
If I use cfhttp tag in coldfusion to output data from an oracle database, can I maintain a persistent connection so that when the database values change in oracle, the page is updated without refreshing the page?

If not, is there another tag that will do this?
0
Comment
Question by:steveweems
3 Comments
 
LVL 19

Expert Comment

by:Jones911
ID: 24142979
No you will have to poll.
0
 

Author Comment

by:steveweems
ID: 24143109
Can you explain polling?  Is there a coldfusion tag for that?
0
 
LVL 36

Accepted Solution

by:
SidFishes earned 125 total points
ID: 24143448
just to elaborate... an http call can never be "persistent" by designs its a get and forget method. A call to a server happens once, and then server knows nothing about later calls (session variables were invented for this reason..to maintain state)

cfhttp is doing exactly what a browser would do so therefore, it can only do what a browser can do (and less in fact as it doesn't handle javasacript or other things like flash well)

You could use cfschedule to do a cfhttp call every x minutesand but you'd still have to handle screen updates but this probably won;t do what you want

You can "simulate" a persistent connection by doing an ajax call using a JS timer and updating behind the scenes but these are distinct calls to the server/db. This is the way most screen updates are handled in the web 2.0 world but they only look like they're not hitting the server/db... they actually do.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Splitting up a coldfusion site into 2 separate sites in IIS 3 88
Redundant SQL Servers Without Clustering 7 94
Problem to get function 52 100
Web Site Hosting 10 80
This is a guide to setting up a new WHM/cPanel Server to be used for web hosting accounts. It is intended for web hosting company administrators and dedicated server owners. For under $99 per month (considering normal rate of Big Data Cetnters like …
Periodically we have to update or add SSL certificates for customers. Depending upon your hosting plan you may be responsible for the installation and/or key generation. In the wake of Heartbleed many sites were forced to re-key. We will concen…
This tutorial gives a high-level tour of the interface of Marketo (a marketing automation tool to help businesses track and engage prospective customers and drive them to purchase). You will see the main areas including Marketing Activities, Design …
In this video I am going to show you how to back up and restore Office 365 mailboxes using CodeTwo Backup for Office 365. Learn more about the tool used in this video here: http://www.codetwo.com/backup-for-office-365/ (http://www.codetwo.com/ba…

896 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now