CouponCodePlugin

Hello, I will tackle the items one by one below.
One thing that you need to keep in mind is that the recommendations may not relate to items on your website. Therefore, you should identify which items are from your website and which are not. There are some items that you can do nothing to rectify except from removing them from your website.

Overview
I am using WebPageTest.org and you can view the results here: http://www.webpagetest.org/result/130226_Q4_ES6/1/details/

There are a number of issues that I can see from the very start. First and most obscure, your website is causing a 301 (permanent redirect). This is a major issue and you should investigate what is causing it. If you are redirecting from http:// to http://www. I do not think you should be using a 301.
Loading of myblogtrainer.de and the redirection to http://www.myblogtrainer.de takes 1233ms, which is pretty massive. Even after the redirect, it then takes 3848ms to load, which again is absolutely massive. These loading times are one of the main reasons your website is taking over 6 seconds to load a 356kb page on a 5mbps connection.
This is before any major part of your website has been loaded.
The best way to solve this issue is to simply find another host who is better and has faster servers. Many hosts cram as many customers as they can onto a single server, causing it to be much slower. The server that you are on has more than 10’500 other websites on the same server. That is an awful lot.
Our system usually has one site per server/ip. Our smaller websites are added to a group server where we tend to have 10 or so sites per server/ip. This is one of the areas that google and other search engines will likely look at when deciding how relevant your website is. The more websites on the same server, the less relevant your website is deemed to be.

Leverage browser caching
You can view the details here: http://www.webpagetest.org/result/130226_Q4_ES6/1/performance_optimization/#cache_static_content

Browser caching is telling users browsers to keep certain items as they may be needed later. When the website is loaded again, all the cached items are loaded from the users computer, which makes it load a lot faster.

Using the link above, you can see the items that are not being cached in the browser. You can only effect the items that are on your website, not items on other websites.

Under Browser Caching in WTC, I select all options except the last 3 in General, All options except the last 2 in CSS & JS, all options under html & xml, all options except the last two in media & other files.

These are the settings that I use and they are also the same settings that I use on all of my own websites.

If you check the link above showing the items that are not cached by the browser, many of them are for gravicon, which I have stopped using as it seems to cause more issues than it solves. If they ever allow their images to be cached, I may add it to my sites again.
The only other item is google analytics and this can not be browser cached as it needs to load each time to log your users.

Changing your settings as detailed above, then clearing all your cache should solve this issue and allow browser caching of all the files on your website.

Minimize redirects
This is more of a nightmare. Redirects are when an address is loaded, but it forwards the user to another address. The more redirects, the longer the connection takes to complete.

To solve this issue, you should address the 301 issue mentioned at the top as that is one redirect as well as being a pretty major issue. Next, you should address gravicon as all of the other redirects are for gravicon.

The other issues that I would also address would be minify as that will reduce your css and js files down to one each, providing your theme and plugins work with it. If they do not, you may need to add the files one by one using manual mode.

I hope this helps you get started. Caching is like a whole new world. I have been using WTC on all my sites for over a year, but I am still learning new stuff. This is mainly because WTC comes with no manual at all and therefore you are left to wildly guess each new feature they add and how it works and should be used.

Best wishes
Dave

Hello, one of the main advantages of GNU / GPL is that you can edit the coding and provide updated versions. This is ideally used in cases such as this when the plugin has fallen into disrepair.
If you can contact me via http://couponcodeplugin.com/contact-us/ and we can provide a mirror or put it on the wordpress repository. Another option would be to add it to a site like dropbox.
Please let me know wherever we can help as it seems this is a really good option for wordpress and there are no other options like it.

Best wishes
Dave

No problem, I just wanted to check in.
As mentioned, I can provide you with access to our server so that you can test it with the latest php version.

Thank you
Dave

I am not sure why you would want to waste time removing this as it is in the code and not displayed to users unless they check the source code.

@selfagency cloudflare can cause more issues than it solves. All of my serious sites do not use cloudflare.
I have seen ping times go through the roof for no good reason as well as “website is offline” messages when I am logged into the server and can clearly see that it is online and has 99% free resources.
Cloudflare is free and you get what you pay for.
Instead, I used max CDN and had 4 CDN addresses for each site. This caused the loading time to be less than a second. With times like this, adding cloudflare would do nothing at all.
However, that being said, I do use cloudflare for sites that are free and will not make any money. This is done to save a bit of money when compared with a high end CDN.

You should monitor your ram to make sure it drops and see what processes are running. You should see it drop. If not, disable the plugin and all its settings, then start over and activate one feature at a time, checking your resource usage before activating the next feature.
You should also do a speed test with something like pingdom or webpagetest.org so that you can see where the bottlenecks are (as Otto mentioned). Then you can see what the issues are and address them.

Any reply? Sadly, it seems that so many plugins are in direct violation with the repository rules or license.

There seems to be something wrong with your site.
When I follow your link: http://www.designrapid.com/wordpress-plugins-security-issue/
It looks like a mobile site. When I click on next page: http://www.designrapid.com/wordpress-plugins-security-issue/?wpmp_tp=1
It shows like a normal website and looks totally different to page one.

Also, there seem to be a lot of letters missing. For example, instead of saying “We” it says “e”.

Hello, I got a white screen when I activated this on our test blog. Sorry for hijacking this thread, but I think it is very likely the same issue and I hope I can help to resolve it for other users.

I am using the latest version of wordpress with no other plugins activated and the default theme is active.
I have a dedicated 16 processor server with more than enough resources and more than enough ram assigned per account.

Server Errors
Checked the server error logs and could not see any recent issues, only old issues that I have previously addressed.

Debug
Flipped on wordpress debug mode in wp-config.php by adding:
define(‘WP_DEBUG’, true);

Two errors were found which relate to the plugin:

Notice: Only variable references should be returned by reference in /wp-content/plugins/live-dashboard/live-dashboard.php on line 64

Fatal error: Call-time pass-by-reference has been removed; If you would like to pass argument by reference, modify the declaration of apply_filters(). in /wp-content/plugins/live-dashboard/lib/live-admin/functions.php on line 27

I suspect these two errors to be the culprit for the white screen.

Looking forward to being able to test this plugin and see what it can do.

Thanks