Re: [WebDNA] Timer
This WebDNA talk-list message is from 2009
It keeps the original formatting.
numero = 101735
interpreted = N
texte = Hi Chris, I do not mean to offend but I find no reports of "trigger bugs fixed" in the mail list archive. Instead I see several reports of failed triggers over a long time, including this post made just days ago: >> WebDNA Version 6 >> In the ISP Sandbox settings there are "Sandbox Options" >> for Emailer and Triggers. > > These are buggy in 6.0a so keep them checked on that > version. They should be fixed in the CICADA (6.1.x build) > but, I have yet to test the fix thoroughly. In this post Mr. Brooke seems to feel the bug may not yet be fixed even in the new version, thus I hesitate to trust triggers given the fact that timed event actions are mission critical for us. On 1/3/09, christophe.billiottet@webdna.us
wrote: > A way to do that would be to add a "timestamp" to a small "witness > database" with only one record, any time the main database or the file > is updated (you must add a small [Replace] command to update the last > value). Then you can compare the last counter value with the last one > you had and send the response to your users. A WebDNA trigger should > be fine. > > You could also flag the event with just a "1" in your witness > database, then reset it to "0" each time you send the notification to > your users. > > You can also use the [FileInfo] and [ModTime] but it will not work > with the WebDNA database, since it is not written to disk. I guess > this would also be slower. > > There are many ways to do this. > > chris > > > > > On Jan 3, 2009, at 2:51, Jason Adams wrote: > >> Sorry for the delayed response, Christmas holidays and all. Happy New >> Year everyone! >> >> Dylan, after reading your response I think I need to explain in more >> detail. I need the software to check on the status of a database and a >> plain text file every few seconds. When the software detects that the >> database or the file has changed, it must send a response to all >> connected visitors. >> >> I'll be keeping connections open to these visitors for the sole >> purpose of sending them an update every few seconds. An update will be >> sent whether or not something has changed since the last update. This >> is necessary to keep visitors informed that they are still online and >> connected. >> >> I've read that triggers are buggy so I don't think I should rely on >> them until they are fixed. This checking and updating capability is >> absolutely critical to the application, so this may mean it should be >> done with cron. If this software can interface with cron and run cron >> events can someone post a code example to help me get started? >> >> I run Linux servers exclusively, and I could have hundreds of servers >> running this distributed online system at any given moment. They are >> generic servers, not all the same OS and not all the same hosts, so >> I'll need software that works on all of them. From what I've read it >> looks like the company is building such a new version for Linux so >> maybe this is good timing. >> >> ----------- >> Jason >> >> >> >> On 12/21/08, Dylan Wood wrote: >>> Jason- >>> >>> As long as the event your talking about yields some sort of evidence >>> that it occurred, you can use webdna to detect that. then trigger >>> your >>> own process whatever it may be. WebDNA can read files and folders, >>> so >>> if the event you are talking about impacts the file system, you >>> should >>> be able to detect it. >>> >>> On Dec 21, 2008, at 5:28 AM, Jason Adams wrote: >>> >>>> Hello I'm new here and new to WebDNA. Hoping to get some help from >>>> anyone who knows. Can WebDNA detect server events then send data to >>>> all logged in visitors incrementally? >>>> >>>> I may need to build a site that sends data from the server >>>> incrementally, every second or every few seconds, if it has changed >>>> since the last incrementing event. Wondering if WebDNA can do this? >>>> >>>> ----------- >>>> Jason >>>> --------------------------------------------------------- >>>> This message is sent to you because you are subscribed to >>>> the mailing list . >>>> To unsubscribe, E-mail to: >>>> archives: http://mail.webdna.us/list/talk@webdna.us >>>> old archives: http://dev.webdna.us/TalkListArchive/ >>> >>> --------------------------------------------------------- >>> This message is sent to you because you are subscribed to >>> the mailing list . >>> To unsubscribe, E-mail to: >>> archives: http://mail.webdna.us/list/talk@webdna.us >>> old archives: http://dev.webdna.us/TalkListArchive/ >>> >> --------------------------------------------------------- >> This message is sent to you because you are subscribed to >> the mailing list . >> To unsubscribe, E-mail to: >> archives: http://mail.webdna.us/list/talk@webdna.us >> old archives: http://dev.webdna.us/TalkListArchive/ > > --------------------------------------------------------- > This message is sent to you because you are subscribed to > the mailing list . > To unsubscribe, E-mail to: > archives: http://mail.webdna.us/list/talk@webdna.us > old archives: http://dev.webdna.us/TalkListArchive/ > -- ----------- Jason
Associated Messages, from the most recent to the oldest:
Hi Chris, I do not mean to offend but I find no reports of "trigger bugs fixed" in the mail list archive. Instead I see several reports of failed triggers over a long time, including this post made just days ago: >> WebDNA Version 6 >> In the ISP Sandbox settings there are "Sandbox Options" >> for Emailer and triggers. > > These are buggy in 6.0a so keep them checked on that > version. They should be fixed in the CICADA (6.1.x build) > but, I have yet to test the fix thoroughly. In this post Mr. Brooke seems to feel the bug may not yet be fixed even in the new version, thus I hesitate to trust triggers given the fact that timed event actions are mission critical for us. On 1/3/09, christophe.billiottet@webdna.us wrote: > A way to do that would be to add a "timestamp" to a small "witness > database" with only one record, any time the main database or the file > is updated (you must add a small [replace] command to update the last > value). Then you can compare the last counter value with the last one > you had and send the response to your users. A WebDNA trigger should > be fine. > > You could also flag the event with just a "1" in your witness > database, then reset it to "0" each time you send the notification to > your users. > > You can also use the [fileinfo] and [ModTime] but it will not work > with the WebDNA database, since it is not written to disk. I guess > this would also be slower. > > There are many ways to do this. > > chris > > > > > On Jan 3, 2009, at 2:51, Jason Adams wrote: > >> Sorry for the delayed response, Christmas holidays and all. Happy New >> Year everyone! >> >> Dylan, after reading your response I think I need to explain in more >> detail. I need the software to check on the status of a database and a >> plain text file every few seconds. When the software detects that the >> database or the file has changed, it must send a response to all >> connected visitors. >> >> I'll be keeping connections open to these visitors for the sole >> purpose of sending them an update every few seconds. An update will be >> sent whether or not something has changed since the last update. This >> is necessary to keep visitors informed that they are still online and >> connected. >> >> I've read that triggers are buggy so I don't think I should rely on >> them until they are fixed. This checking and updating capability is >> absolutely critical to the application, so this may mean it should be >> done with cron. If this software can interface with cron and run cron >> events can someone post a code example to help me get started? >> >> I run Linux servers exclusively, and I could have hundreds of servers >> running this distributed online system at any given moment. They are >> generic servers, not all the same OS and not all the same hosts, so >> I'll need software that works on all of them. From what I've read it >> looks like the company is building such a new version for Linux so >> maybe this is good timing. >> >> ----------- >> Jason >> >> >> >> On 12/21/08, Dylan Wood wrote: >>> Jason- >>> >>> As long as the event your talking about yields some sort of evidence >>> that it occurred, you can use webdna to detect that. then trigger >>> your >>> own process whatever it may be. WebDNA can read files and folders, >>> so >>> if the event you are talking about impacts the file system, you >>> should >>> be able to detect it. >>> >>> On Dec 21, 2008, at 5:28 AM, Jason Adams wrote: >>> >>>> Hello I'm new here and new to WebDNA. Hoping to get some help from >>>> anyone who knows. Can WebDNA detect server events then send data to >>>> all logged in visitors incrementally? >>>> >>>> I may need to build a site that sends data from the server >>>> incrementally, every second or every few seconds, if it has changed >>>> since the last incrementing event. Wondering if WebDNA can do this? >>>> >>>> ----------- >>>> Jason >>>> --------------------------------------------------------- >>>> This message is sent to you because you are subscribed to >>>> the mailing list . >>>> To unsubscribe, E-mail to: >>>> archives: http://mail.webdna.us/list/talk@webdna.us >>>> old archives: http://dev.webdna.us/TalkListArchive/ >>> >>> --------------------------------------------------------- >>> This message is sent to you because you are subscribed to >>> the mailing list . >>> To unsubscribe, E-mail to: >>> archives: http://mail.webdna.us/list/talk@webdna.us >>> old archives: http://dev.webdna.us/TalkListArchive/ >>> >> --------------------------------------------------------- >> This message is sent to you because you are subscribed to >> the mailing list . >> To unsubscribe, E-mail to: >> archives: http://mail.webdna.us/list/talk@webdna.us >> old archives: http://dev.webdna.us/TalkListArchive/ > > --------------------------------------------------------- > This message is sent to you because you are subscribed to > the mailing list . > To unsubscribe, E-mail to: > archives: http://mail.webdna.us/list/talk@webdna.us > old archives: http://dev.webdna.us/TalkListArchive/ > -- ----------- Jason
"Jason Adams"
DOWNLOAD WEBDNA NOW!
Top Articles:
Talk List
The WebDNA community talk-list is the best place to get some help: several hundred extremely proficient programmers with an excellent knowledge of WebDNA and an excellent spirit will deliver all the tips and tricks you can imagine...
Related Readings:
& not allowed in db by definition? (1999)
Ad Serving Software (2002)
Sorting Numbers (1997)
WebMerchant and PC Auth Hub (1999)
REPOST: Overwiting SKU in Cart (2002)
Moment of Thanks (1997)
Truncated Sendmail (1998)
web delivery (1997)
Emailer Timing out (1999)
Polls (2003)
WebCat2b12 CGI Mac - [shownext] problem (1997)
WebCat2 - [format thousands] (1997)
WebCatalog-NT?'s (1996)
Re[2]: Enhancement Request for WebCatalog-NT (1996)
Advice needed. (1998)
WebDNA creates DUPLICATE SHOPPING CART NUMBERS (2004)
Incorrect Value Display (2000)
Languages (1997)
SetHeader (1997)
Browser Info.txt (1997)