VPS – Blog SERVER.UA

What happens to a VPS when it runs out of RAM

On January 21, 2026

A server rack with several servers, next to a yellow warning sign, and above them a resource fill indicator that changes from the green zone to red. — RAM shortage as a critical moment for stable server operation

Random access memory, or RAM, is the resource where a server stores data that programs need to operate “right now.” This includes website code, databases, cache, operating system processes, and system services. Unlike disk storage, RAM works very fast but has a limited capacity. On a VPS, the amount of RAM is fixed by the tariff plan, and the server cannot automatically use more memory than it has been allocated. As a result, the stability of a VPS directly depends on whether there is enough RAM to handle the current load.

What Is an API and Why It Exists in Almost Every Service

By Микола

On January 8, 2026

In Servers

Illustration of a waiter with the inscription API taking an order from a user at a table and passing it to the kitchen with the inscription Server. — API as a universal way of interaction between different parts of a service

API stands for Application Programming Interface, which is a software interface for interaction between different systems. Simply put, an API is a set of clear rules that allow one program to communicate with another, send a request, and receive a response. End users usually do not see APIs and rarely think about their existence, yet they use them constantly. Logging in with Google, paying by card on a website, displaying the weather, exchange rates, or delivery status — all of this works thanks to APIs.

How Background Processes Consume VPS Resources

By Микола

On December 26, 2025

In Servers

Servers with a high load indicator, background processes in the form of service windows, and overheating and overconsumption of VPS resources icons. — Impact of internal system processes on VPS load

VPS is often perceived as a “clean” server where all resources are available only to a specific website or application. The user expects that if nothing unnecessary is running, the CPU, memory, and disk will be used minimally. In reality, even in a state of relative idle, a server is never completely empty. Dozens of processes constantly run in the background, invisible at first glance, but it is precisely they that gradually consume VPS resources.

Why IP Reputation Is Crucial for VPS

By Микола

On December 15, 2025

In Servers

An IP address with allow and block marks next to the VPS server, symbolizing the IP reputation. — IP reputation directly affects the stability and trust of a VPS

When a website, mail server, or API runs on a VPS, it receives its own IP address — a unique numerical identifier on the network. For internet services, this address has its own reputation, similar to a company’s business reputation. IP reputation is formed based on the server’s behavior: what requests it sends, which services run on it, and whether spam, phishing, or other suspicious activity is detected from it. A poor IP reputation can result in emails not reaching recipients, websites being blocked by browsers, and external services refusing to work with it.

Is “Fail-Proof” Hosting Possible and Why 100% Uptime Is a Myth

By Микола

On December 9, 2025

In Servers

A worried user thinks about 100% uptime and possible server failure. — 100% uptime is unattainable even for the most stable servers

In today’s digital environment, every business wants to be sure that its website or application is always available. Users do not tolerate delays, and companies understand that even a few minutes of downtime can lead to financial losses, reduced trust, or indexing issues in search engines. That is why VPS and dedicated server services often highlight uptime — the percentage of time the infrastructure operates without interruption. However, in real engineering, an absolute 100% uptime is unattainable. Even if the servers are expensive, the data center is certified, and the network is fully redundant, physical and organizational limitations still exist. To understand why “fail-proof” hosting is more of a marketing term, it is important to examine how VPS and dedicated servers actually work.

How a Hypervisor Divides a Physical Server into VPS

By Микола

On November 7, 2025

In Servers

The physical server is divided into several independent VPSs. — Partitioning hardware resources into separate virtual environments

Not so long ago, to launch a website or an online service, it was necessary to rent or purchase a whole physical server. This is expensive, difficult to administer, and comes with excessive capacity that often remains unused. The situation changed with the appearance of virtualization — a technology that allows creating several independent virtual servers on a single physical server. Each of them operates as if it has its own processor, memory, disk space, and operating system. The key element of this process is the hypervisor. It acts as a “conductor” that controls the distribution of resources and ensures the stable operation of each VPS.

10 Tips for Choosing the Right Server Configuration for a Startup

By Микола

On October 30, 2025

In Servers

A system administrator is configuring a server at a laptop, with a cloud, servers, and a checklist of parameters shown nearby. — Optimal server configuration is the foundation of a successful startup

Launching a startup is always a mix of ideas, speed, and technology. At the early stage, it’s not enough to build a product — you also need to ensure its stability. The server is the foundation of any online project, and its configuration determines whether your website can handle the first wave of users, how fast pages will load, and how easily the system can scale in the future. A wrong choice can cost time, money, and customer trust — so it’s worth approaching this decision carefully.

Website Launch Checklist on a New VPS

By Микола

On October 29, 2025

In Servers

A server, a monitor with a rocket on the screen, and a checklist with completion marks indicating readiness for launch. — Checking the VPS before launching the site is the key to stable project operation

Launching a website on a new VPS is more than just uploading files. It’s a full process that includes configuring the server, connecting a domain, installing a security certificate, checking the website’s functionality, and optimizing its speed. If each stage is completed carefully, the website will run stably, quickly, and without issues — even under heavy load.

Advantages of Using NVMe Storage on VPS in 2025

By Микола

On October 28, 2025

In Servers

NVMe drive next to a VPS server and an up arrow indicating increased performance. — NVMe increases VPS speed and stability

In the modern internet, every second counts. The loading speed of a website affects not only the first impression of a user but also search engine rankings, conversion rates, and even brand trust. If a page loads slowly — the user leaves. That’s why more and more businesses are switching to VPS with NVMe drives, which by 2025 have become the new standard of performance. This technology not only provides lightning-fast read and write speeds but also ensures stability, energy efficiency, and long-term server reliability. NVMe (Non-Volatile Memory Express) is not just another evolution of SSDs — it’s a protocol designed specifically for flash storage that allows the system to work without delays and fully unlock the potential of modern hardware.

How to Set Up Server Security Before Launching a Website

By Микола

On October 23, 2025

In Security

A laptop, a server, and a shield with a lock are elements that emphasize data protection before launching a site. — Server security before launching a site is the basis for stable operation and user trust

When your website is ready to go live, the most important step is ensuring that the server hosting it is properly secured. Many project owners focus on design, speed, or content but forget the essential foundation — protection against attacks and data leaks. On the internet, every server is a potential target for hackers, so security cannot be postponed. Proper preparation before launch helps avoid most risks and ensures stable website operation from day one.

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