I am vps 2 core 4gb ram user. I wonder how much realtime traffic my vps can handle. My website at https://mobiappdaily.com is a one site sharing app sales on ch play and app stores that is reducing traffic to just over 5,000 but vps is running really slow, hope everyone can help.
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In case someone else that wants to read a bit more about server and Droplet optimization stumbles upon this question, I’ll post the typical issues/resolutions to such cases. They are almost every time connected with two things - Website Optimization and Server/Droplet Optimization.
Let’s start with Server Optimization.
When looking at Server/Droplet Optimization, there are a few necessary services/packages that are universal.
The first one would be Server-side caching. Server cache is an umbrella term covering a number of different types of caching. This includes Content Delivery Network (CDN) caching, object caching, and opcode caching. Depending on what you want to achieve you might need one or the other. Usually, though, you can have all 3 types of caching as it shouldn’t interfere with your Website/App. I won’t go into more details about what each caching does as this post will become 3 pages long. There are multiple documents providing services/packages for each of the server-type caching.
Next would be using PHP-FPM (if your Website is using PHP of course). PHP-FPM is an efficient method on how to minimize the memory consumption and rise the performance for the Websites with heavy traffic. It is significantly faster than traditional CGI-based methods in multi-user PHP environments.
Another solution would be Database Caching. A database cache supplements your primary database by removing unnecessary pressure on it, typically in the form of frequently accessed read data. The cache itself can live in a number of areas including your database, application or as a standalone layer. Usually, for this kind of caching is being used Redis.
Apache NPM modules. If you are using Apache, you are using one of three NPM modules. Most certainly if you haven’t configured anything on it and have used the default configuration, you are using NPM_Prefrok which is the most outdated one and thus the slower. I’ll recommend using one of the other two - NPM_Worker and NPM_Event depending on your situation. Again, I would urge you to read more about these 3 and what is applied in which case.
Apache Workers. Basically, the Apache workers are equivalent to a room full of seats. These seats are the projection to your website. When someone opens your website, it’s like one person going to this room and sitting on one of the chairs. When the limit is reached, in order for a person to load your website, another one needs to close it. So basically, I’ll suggest increasing that value as well.
Those were the basic optimizations on a server level, let’s start with your Website/App
If you are using a CMS like WordPress, Magento, Joomla, Opencart or anything of the same matter, there will be plugins/addons. These addons can be very powerful if used correctly. The most helpful plugins are:
If you are not using a CMS, you’ll need to try and do what these plugins are doing manually.
Usually, Websites/Apps are slow because of a couple of reasons which range from too many requests or big images to a bunch of unnecessarily big JS or CSS files. Optimizing these whether you are using a Plugin or doing it manually is enough.
I hope this was helpful.
Well it really depends on how well is your Application and Droplet optimized althoug this also has it’s limits.
You can think about adding SWAP to your Droplet however it’s a shortterm solution.
Swap is a portion of hard drive storage that has been set aside for the operating system to temporarily store data that it can no longer hold in RAM. This lets you increase the amount of information that your server can keep in its working memory, with some caveats. The swap space on the hard drive will be used mainly when there is no longer sufficient space in RAM to hold in-use application data.
The information written to disk will be significantly slower than information kept in RAM, but the operating system will prefer to keep running application data in memory and use swap for the older data. Overall, having swap space as a fallback for when your system’s RAM is depleted can be a good safety net against out-of-memory exceptions on systems with non-SSD storage available.
However if you’ve already optimized both your app and Droplet it might be a good thing to look for an upgrade of the resources you have.