I have a strange issue with Joomla content caching, the articles themselves take up to 10 mins to refresh their titles, images, text.
i have disabled System - Page Cache
Note i am also using cloud flare
Thank You.
If I'm not mistaken, cloud flare has some serious problems with caching. Check with them and they may send you some lines that you have to throw in your .htaccess to disable their caching.
If you have specifically enabled page rules in CloudFlare to cache static content, then it's possible this is CloudFlare related, It's easy enough to check by deleting any page rules which could cause this.
I have dozens of Joomla sites using CloudFlare and I've never seen that there was a problem combining them, or that ClouldFlare would try and cache articles by default.
As you will know, by default CloudFlare will cache static content like javascript and CSS files, but from what you describe, it's seems unlikely that this could be a cause.
I know you mention that articles are being cached, but if you have double checked that
- Extensions > Plugins > System - Page Cache is disabled
- You have cleared System > Page Cache
- You don't have any other caching enabled on your site
- You haven't specified custom ExpiresByType or mod_headers settings in .htaccess
then try setting System > Global Configuration > System > Cache to Off and on the same window if you have selected memcache(d) for the cache handling, change it to File.
These last settings under System > Cache should only affect module caching, not article caching but it doesn't hurt to rule it out.
Good luck!
Related
On the, The Net Ninja Youtube channel I see the Ninja has disabled cache in his Laravel 6 tutorial. Just curious what's the benefit over enabling when coding?
So that changes made to resources loaded into the page, such as images, stylesheets, and scripts are always refreshed and reloaded when the page itself is reloaded (so you don't need to remember to press Shift+F5 or Ctrl+Shift+R).
When caching is enabled the browser may prefer its cached versions which may be stale instead of always using the latest-built assets.
However disabling caching is unnecessary if you use a content-addressing scheme for off-page resources (i.e. the URI of a script file or stylesheet includes its content hash (SHA-256, etc)).
Using Joomla System - Page Cache, my webpage is now around 4-5 sec.
But i have few pages which will be shown only to registered users. I just checked its taking around 10-15 sec. When i inspected using chrome, i can see few things, i have livechat, which is taking around 2 sec, and few things. But live chat is showing in homepage also. but that page is speed.
Wanted to know is Joomla system cache plugin will not work for registered users visible page. or any other plugin i can use to speed up this type of pages.
Joomla have one JCH Optimize plugin which will decrease your website load speed.
It will compress all css and js file into one file.That file will store in cache so website speed will be up.
This plugin will be helpful to you.
Thanks
Are you using Joomla.
for some components only had the problem of page cache. if u need to clear cache.
and you need to speed up the joomla site
follow the basic step:
Enable Gzip Compression
Using the Gzip Compression feature, you can compress your website pages before sending them to the user. After that, they will be uncompressed by the user’s browser. And this process takes less time than transferring uncompressed pages.
Enable Cache System
Optimization Settings (Images, CSS, Java Scripts…)
Now Check Your Joomla Website Speed
it may use full to speed up your site.
Wanted to know is Joomla system cache plugin will not work for registered users visible page.
Per the Joomla! Documentation, Page Caching:
Only caches pages for guest visitors (not for logged in visitors)
or any other plugin i can use to speed up this type of pages.
Aside from JCH Optimize (which was already mentioned), another component I recommend is JotCache, which is far better than just the Joomla! default cache.
You may, also, use GTmetrix to analyze your site against both Google PageSpeed and Yahoo! Yslow.
Finally, you may try using a CDN to speed up resource delivery. Here are a few:
MaxCDN
Amazon CloudFront
Azure CDN
CDN77
CDNetworks
CDNlion
CacheFly
EdgeCast Networks
KeyCDN
SkyparkCDN
You can use CDN for Joomla! to incorporate the CDN technology.
Overall, your best bet is going to be a combination of the CDN and JCH settings to trim down the overall weight of the site using GTmetrix to compare the site after each change.
Further reading: Joomla Performance & Speed
I have a WordPress site that is doing a few weird things, and I believe it is because it is being cached. I changed the contents of a CSS stylesheet file, and the change took around 10 minutes before it appeared live.
I can't however find any caching mechanism setup. I've looked through cPanel and can't see anything setup there. The IP of the site resolves to the IP that cPanel is showing.
I've looked for plugins in WordPress and can't see any caching plugins (although if it was a caching plugin, would accessing a stylesheet be cached?).
Any tips on how I can see if the page is being cached on the server or by a plugin?
Put a JavaScript bug on the page which crafts a random URL and requests it. Compare the number of page requests to random URL requests. But there are lots of scenarios where a browser can cache a page in the absence of caching information.
If your website is behind Cloud Flare network or such, this is normal behavior.
Try running next command (Windows Command prompt/Linux terminal):
ping www.yoursite.com
and visit resolved IP address in browser - this may tell you if you are behind caching network.
Take a look at this article: http://www.mobify.com/blog/beginners-guide-to-http-cache-headers/
Lately I've become somewhat obsessed with page speed optimization and I wanted to find out can CMS caching mechanism (For example Joomla cache), Gzip compression and Cloudflare work all together in perfect harmony?
I understand how each system works by itself (more or less), but I don't understand would they work together. Is it even recommended to use all of them at once?
If I use cloudflare do CMS cache and Gzip even matter?
P.S What other tools do you use?
can CMS caching mechanism (For example Joomla cache), Gzip compression and Cloudflare work all together in perfect harmony?
Yes, plus they all do slightly different things.
Cloudflare caches the static content, eg images and stylesheets. Fresh page HTML is still downloaded by every visitor on every page.
Gzip compression comes into play both with Cloudflare and your server. By default Cloudflare automatically compresses content passing through it's system, Files not passing through Cloudflare can be compressed by your server, Caching and gzip compression by htaccess , though since you are using Joomla, the easiest way to enable this is from
the control panel > system > global configuration > server > Gzip Page Compression.
This will decrease download times for the page HTML and the dynamic content produced by Joomla.
Using Joomla cache will typically reduce page load times because instead of Joomla using modules and plugins to recalculate the dynamic page content everytime for every visitor, it will simply use the saved cache content. You can cache Joomla content by page, by module or by plugin, here's one good explanation of the differences.
It's worth spending some time testing with a tool like WebPageTest to find the best Joomla cache option for your specific site. I've sometimes had significant savings with this.
It's makes sense to have all 3 working on your site, it will reduce server load and speed up page display.
Good luck!
Just a heads up. Some content in certain browsers can experience byte range request issues if you have gzip enabled while using cloudfare.
For instance, depending on server, Safari will (most likely) not play mp4 video served through cloudfare and gzip enabled server. Gzip can interfere with byte-range separation of requests.
I ran into this issue before and figured I would share in case anyone runs into any of these issues.
If you want to have gzip enabled, but experience issues with certain files, you can disable gzip for those specific files in .htaccess by adding this:
<IfModule mod_headers.c>
<FilesMatch "\.mp4$">
RewriteRule ^(.*)$ $1 [NS,E=no-gzip:1,E=dont-vary:1]
</FilesMatch>
Just replace .mp4 with file type if issues with any others.
Why it is sometime necessary to do Cache management to disable and Index management to re-index in magento.I am new in magento so if you know then reply this kindly.
In your development environment its advised to disable the cache because you tend to make the changes in the template / layout files often so to get it reflected on the frontend / website you are advised to disable the cache in your development environment. But don't do it in PRODUCTION.
And coming to Index Management, set it as "Save on Update" mode so that each time if you make some changes to your products, categories or attributes its getting re-indexed automatically and avoids the necessity to re-index it every time manually.
Specifically, "Block" data are the html blocks that the MVC generates to present to the frontend and even in the admin sometimes. Because of the caching and also session information, you need to log out of admin and back in for some changes to appear.
Depending on site volume, there might not be a penalty for turning off caching. If I'm doing a quick styling fix, I'll disable the block cache for a couple minutes.