Re: Using caching and threading to load a page quickly
Another approach would have the feed fetching functionality in a separate template which is run as a scheduled task every 2 minutes. That task can shove the parsed (and potentially formatted) feed into the application scope. (With a lock.) And then your main page can output that variable (with a lock). Then your home page would load as fast as it would as if the feed were local. Based on all the information exchanged so far, this is the approach I'd recommend. Just fetch it periodically and store it locally. Don't wait for a user to request it first (as you're doing in another post). Dave Watts, CTO, Fig Leaf Software 1-202-527-9569 http://www.figleaf.com/ http://training.figleaf.com/ Fig Leaf Software is a Veteran-Owned Small Business (VOSB) on GSA Schedule, and provides the highest caliber vendor-authorized instruction at our training centers, online, or onsite. ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:359448 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: Using caching and threading to load a page quickly
Thanks Jonah, I am sorry for the late reply. The WordPress's RSS feed is stable but due to excessive resource usage, the newswebsite has been suspended a few times after which we had to call the Hosting company to restore it. To have the rest of the page load and then the feed display later, you'll have to use AJAX to pull in a separate CF page clientside. (You'd still use caching in the feed.cfm so it'd only be slow occasionally.) Would the following code http://collabedit.com/tmjwj/history function as expected in an environment with less users than actual production? If the newswebsite is suspended because it is using too many resources on shared hosting, the thread reading the feed will timeout in 30 seconds, so there will be no results. Will News feed not available be shown? Or, since the variable #feedResult.entriesNews# had a value from the last successful read, those results will be displayed? Another approach would have the feed fetching functionality in a separate template which is run as a scheduled task every 2 minutes. That task can shove the parsed (and potentially formatted) feed into the application scope. (With a lock.) And then your main page can output that variable (with a lock). Then your home page would load as fast as it would as if the feed were local. So, as you suggest, I need to get the feed, write to the machine running CF server which will be used if the RSS feed is unavailable, in case the newswebsite is suspended again. I will make the feed loading a scheduled task and have to call it in the Application.cfm(I know most people have already moved to Application.cfc) and if no response is used, use the previous feed obtained from the past successful fetch. I appreciate your assistance and time. ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:359404 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Using caching and threading to load a page quickly
Hi All, I have a main index page which is in ColdFusion which gets a RSS feed from another website(Newswebsite which is a WordPress 3.9.2 website running on shared hosting). The Newswebsite is on shared hosting so takes about 7 seconds to load(a little slow, I know, but the decision to go with a shared hosting was done to save on costs by the purchasing people). Now, people don't want the main index page to take 7 seconds to load. I estimate using caching of the RSS feed so that updates are retrieved from the feed only every 2 minutes and having a thread so that the main index page loads(in 2 seconds or less) without waiting for the RSS feed can alleviate the issue. The thread which fetches the data from RSS feed can display the feeds on the main index page after the data is retrieved. 1. If the idea is viable, would something like the below work? - cftry cfset rssUrl = http://www.testsite.com/?feed=rss2; !--- Caching the RSS feed from newssite so that it is checked every 2 minutes only--- cfcache action = cache timespan = #createtimespan(0,0,2,0)# !--- Start a thread and wait for it to read the RSS feed from newssite --- cfthread action=run name=thread1 cffeed action=read source=#rssUrl# query=entriesNews properties=info timeout = 180 /cfthread cfthread action=join name=thread1 timeout=7000 / cfset feedResult=cfthread[thread1] !--- Display feed information if it was obtained in 7 seconds --- cfif isDefined(feedResult.entriesNews) ul cfoutput query=entriesNews startrow=1 maxrows=3 cfset tempTextNews = #title# cfif len(tempTextNews) gt '75' li a class=NewsEvents href=#rssLink# target=_blank#Left(tempTextNews, 75)#...more/a /li cfelse li a class=NewsEvents href=#rssLink# target=_blank#title#...more/a /li /cfif /cfoutput /cfif /cfcache cfcatch type=any !--cfdump var=#entriesNews# --- !--cfdump var=#info# --- News Feed not available /cfcatch /ul /cftry - 2. Are there other better ways to tackle the issue? I want the other parts of the main index page which is in ColdFusion to load and not get delayed because getting data from the RSS feed of news website takes 7 seconds. Any suggestions would be appreciated. Thanks ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:359368 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
Re: Using caching and threading to load a page quickly
To have the rest of the page load and then the feed display later, you'll have to use AJAX to pull in a separate CF page clientside. (You'd still use caching in the feed.cfm so it'd only be slow occasionally.) Another approach would have the feed fetching functionality in a separate template which is run as a scheduled task every 2 minutes. That task can shove the parsed (and potentially formatted) feed into the application scope. (With a lock.) And then your main page can output that variable (with a lock). Then your home page would load as fast as it would as if the feed were local. On 9/28/14, 10:23 PM, Chris h wrote: Hi All, I have a main index page which is in ColdFusion which gets a RSS feed from another website(Newswebsite which is a WordPress 3.9.2 website running on shared hosting). The Newswebsite is on shared hosting so takes about 7 seconds to load(a little slow, I know, but the decision to go with a shared hosting was done to save on costs by the purchasing people). Now, people don't want the main index page to take 7 seconds to load. I estimate using caching of the RSS feed so that updates are retrieved from the feed only every 2 minutes and having a thread so that the main index page loads(in 2 seconds or less) without waiting for the RSS feed can alleviate the issue. The thread which fetches the data from RSS feed can display the feeds on the main index page after the data is retrieved. 1. If the idea is viable, would something like the below work? - cftry cfset rssUrl = http://www.testsite.com/?feed=rss2; !--- Caching the RSS feed from newssite so that it is checked every 2 minutes only--- cfcache action = cache timespan = #createtimespan(0,0,2,0)# !--- Start a thread and wait for it to read the RSS feed from newssite --- cfthread action=run name=thread1 cffeed action=read source=#rssUrl# query=entriesNews properties=info timeout = 180 /cfthread cfthread action=join name=thread1 timeout=7000 / cfset feedResult=cfthread[thread1] !--- Display feed information if it was obtained in 7 seconds --- cfif isDefined(feedResult.entriesNews) ul cfoutput query=entriesNews startrow=1 maxrows=3 cfset tempTextNews = #title# cfif len(tempTextNews) gt '75' li a class=NewsEvents href=#rssLink# target=_blank#Left(tempTextNews, 75)#...more/a /li cfelse li a class=NewsEvents href=#rssLink# target=_blank#title#...more/a /li /cfif /cfoutput /cfif /cfcache cfcatch type=any !--cfdump var=#entriesNews# --- !--cfdump var=#info# --- News Feed not available /cfcatch /ul /cftry - 2. Are there other better ways to tackle the issue? I want the other parts of the main index page which is in ColdFusion to load and not get delayed because getting data from the RSS feed of news website takes 7 seconds. Any suggestions would be appreciated. Thanks ~| Order the Adobe Coldfusion Anthology now! http://www.amazon.com/Adobe-Coldfusion-Anthology/dp/1430272155/?tag=houseoffusion Archive: http://www.houseoffusion.com/groups/cf-talk/message.cfm/messageid:359369 Subscription: http://www.houseoffusion.com/groups/cf-talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/groups/cf-talk/unsubscribe.cfm
