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KernelCare ePortal for Larger Hosting Infrastructures

Centralized patch distribution with staggered groups for different hosting servers

KernelCare ePortal centralizes the distribution and deployment of live patches across large Linux fleets. This article explains when the additional platform is worthwhile and how to manage patch rings, mirroring, replication, and security controls effectively.

Using Redis Lua Scripts Correctly for Atomic Operations

Conceptual representation of an isolated Redis Lua script flow between multiple clients and a consistent key-value pair.

Redis Lua scripts combine reading, checking, and writing into a single, isolated server operation. This article explains KEYS and ARGV, EVAL and functions, cluster limits, error handling, and safe patterns for limits and reservations.

Configuring the NGINX Resolver Cache Correctly

Conceptual diagram of an NGINX reverse proxy with a DNS resolver cache and dynamic backend addresses.

Here's how to configure the NGINX resolver for dynamic backends: DNS TTL, valid, resolver_timeout, variable proxy_pass targets, and dynamic upstreams are clearly separated from one another.

How Can You Tell if a Chat Platform Is Reputable? An Overview of Security Criteria

A reputable chat platform can be identified by clear criteria: a German headquarters that complies with the GDPR, transparent moderation, a minimum age requirement, and a transparent process for handling reports. As a German chat community, Knuddels meets these criteria and demonstrates how technical security and community culture can be combined in practice. Anyone who evaluates providers themselves will find a specific checklist here. Anyone who works professionally with servers, hosting packages […]

Server Infrastructure 2026: A Guide to Choosing the Best WordPress Provider

By 2026, database-driven content management systems such as WordPress will place the highest demands on the underlying server architecture. For system administrators and webmasters, simply providing web space is no longer enough to meet the growing demands of Core Web Vitals and dynamic traffic spikes. What’s needed are uncompromising all-in-one infrastructures that combine performance tuning, robust security mechanisms, and legal compliance in a […]

Smart Home Without the Cloud: The Case for Local Control on Your Own Hardware

A locally operated smart home runs on its own hardware rather than in the manufacturer’s cloud: automations work even without an internet connection, control and automation data can remain within the home, and individual devices from different manufacturers can be combined. The trade-off is that you’re responsible for updates, backups, and remote access. The key factor is whether the desired devices have local interfaces. If you’re already running servers, […]

Comparing MariaDB Flush Methods: Optimizing the INNODB FLUSH Setting

Server Rack with MariaDB Database and Optimized Flush Methods

Learn how to optimally configure MariaDB flush methods and `innodb_flush` using `O_DIRECT`, `fsync`, and `innodb_flush_log_at_trx_commit`. This guide provides practical database tuning tips for HDD, SSD, and cloud environments, with a focus on performance and data security.

Analyzing and Optimizing Linux SoftIRQ Usage

Linux server with visualized SoftIRQ utilization in a modern data center

Learn how to systematically analyze and optimize Linux SoftIRQ utilization to boost your servers' Linux performance through targeted netdev tuning and improved interrupt distribution.

Technical SEO Analysis 2026: The Best Website Check and Audit Tools for Day-to-Day Server Operations

A high-performance server and a properly configured caching setup are only half the battle if faulty code or broken redirects sabotage your rankings. For administrators and webmasters, regular SEO analysis is essential for identifying technical bottlenecks early on. However, a simple website check quickly becomes insufficient for complex infrastructures. When dealing with hundreds of thousands of URLs, deep […]

Kernel Same-Page Merging: KSM for Better Virtualization Performance

Linux Kernel Samepage Merging for Efficient Virtualization in the Data Center

Learn how Kernel Samepage Merging (KSM) in the Linux kernel optimizes RAM usage and enables more virtual machines to run on the same hardware. This article explains how it works, how to configure it, and its impact on virtualization performance—including practical tips for administrators.

Is an Office subscription a money pit? How webmasters save hundreds of euros with used licenses

For self-employed individuals and webmasters, professional office software isn’t a luxury—it’s an indispensable tool. Whether it’s creating quotes, doing bookkeeping in Excel, or preparing a project presentation for a new client, the programs in the Microsoft Office suite are firmly established in the business world. However, the costs—especially for popular subscription models like Microsoft […]

Location, Security, and Scalability: Criteria for Choosing the Right Data Center

Outsourcing a company’s IT infrastructure to an external data center is one of the most fundamental strategic decisions for modern businesses. It involves not only transferring hardware but also a significant degree of responsibility for availability, security, and performance. The wrong choice can lead to latency issues, security vulnerabilities, or unforeseeable costs. Therefore, this process involves much more than […]

2,000-watt balcony power plant: How much continuous load does it actually cover?

A balcony solar power system with a module capacity of 2,000 Wp generates approximately 1,600 to 1,900 kilowatt-hours per year in Germany—enough to cover a large portion of the base load for many tech-savvy households. A maximum of 800 watts can still be fed into the grid. How generation and continuous consumption can be balanced, and when the jump from 800 to 2,000 Wp makes sense for you […]

Compliance in the Digital Age: How Modern ISMS Software Makes Regulatory Obligations Manageable

The days when corporate compliance was handled simply by filing away policies and conducting occasional employee training sessions are finally over. Regulatory requirements for companies are growing rapidly. Whether it’s the NIS 2 Directive, the GDPR, the Supply Chain Due Diligence Act (LkSG), or industry-specific requirements such as DORA—compliance has become a complex, ongoing management task. At the intersection of law, organization, and […]

How do you choose the best web hosting provider?

Choosing a web hosting provider is one of the most important decisions when building a website. Anyone planning an online project—whether a blog, a company website, or an online store—faces a seemingly overwhelming array of plans, technologies, and service promises. The market is particularly fragmented in Germany, where, in addition to large providers, there are many specialized service providers with different areas of focus. A […]

Securing Web Applications: Vulnerabilities You Should Be Aware Of

If you run your own website, when it comes to security, you probably think first of all about your passwords, backups, or SSL. While this is generally correct, it’s unfortunately not enough for complex applications. As soon as you start using user accounts, database queries, interfaces, and forms—among other things—hackers gain new avenues of attack that you need to be aware of as early as […]