Your hosting requirement and expectation of server performance largely depends upon the task you are handling. For instance, when you are hosting only a single page website or a blog on a shared hosting server you might find your experience a really satisfactory one. Now consider a situation where by switching to a cPanel VPS suddenly you experience an array of issues that were previously was unknown to you. Suddenly you began to deal with issues like server load, spammers, downtime, etc.
There is no reason to curse your decision for switching to cPanel VPS. Actually VPS is always better than shared server because it provides all the advantages of dedicated server at a fraction of cost needed for it. Actually your mistake lies in choosing an unmanaged VPS. But since you have selected an unmanaged VPS we can provide here some simple tips to manage high server load on your virtual server.
1. Caching is important way out
Caching can play a really important role to reduce server load. You probably know this and already are using this but we further recommend using this at diverse levels to minimize the load. There are various ways to do it. Let us explain some of them.
A CDN can be a really effective way to implement caching throughout and reduce the load to a great extent.
A Good Caching Plugin can also help you reduce the load significantly. A caching plugin that can quickly convert WordPress posts into static HTML pages can be a great solution to reduce overload and enhance loading speed for your posts.
Browser level caching is another way to serve your repeated users with fast page loading. This is often an ignored by most web managers but can be effective if you have repeated or regular users.
2. Fight Spam and strengthen security
Without fighting spam you just cannot ensure optimum server performance simply because they often create the bulk of server load and interfere with server side tasks. Spammers often are accounted for making lot of resources busy for serving their behind the scene activities. Let us come straight as what you can do to prevent this.
There are some great anti-spamming tools included in the cPanel like ConfigServer Security & Firewall (CSF) and cpHulk. These tools offer all that you need to protect your server from spamming activities. ModSecurity management suite is also another excellent anti-spamming tool.
A CDN like Cloudflare can be greatly helpful to automatically block majority of Spambots.
For your WordPress blog or site, a WordPress Security Plugin can be effective. From securing the login area to making important changes to further decrease chances of being intercepted and hacked, such plugins can play effective role.
Installing a Firewall to prevent cracking your server password is recommended to tighten the security.
3. Optimize your WordPress
WordPress sites are seen as most vulnerable to wide range of security flaws. First of all, ensure updating WordPress including the themes and plugins at a regular basis. Every update comes with some kind of security fixes and you should never miss them.
There are certain unnecessary plugins that can utilize a good portion of your server resource and consequently can create overload. To optimize speed turn off all the plugins those are unnecessary.
Certain WordPress addons like WP-Optimize can be great to remove spam comments, transient objects, etc. and drive performance. You can also optimize loading speed by some simple ways like turning off anonymous and unknown FTP accounts, turning off mailman etc.
4. Keep backend jobs at minimum
Sometimes lot of backend housekeeping jobs create a good load on the server and in such times you need to minimize such tasks to boost the server space and optimize speed. Besides serving visitors a WHM server keeps itself busy with lot of other backend tasks like preparing logs, creating backups, etc. You can turn off logs that are not necessary, keep frequency of backups at minimum, etc. to reduce the load on the server.
5. Monitoring the server
Finally, there is no better way to get a picture of your server load than keeping a constant vigil on it. A good monitoring plugin would tell you from time to time regarding the server load in days, weeks and months. Besides such tools can also inform you with granular level server utilization data and you can easily make out in which areas you need to optimize certain things to enhance performance and speed.
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