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Top 10 Logical Errors and How to Avoid Them
Reading Time: < 1 minuteSyntax errors are usually easy to catch. The compiler or interpreter tells you exactly where something is wrong. Logical errors are different. The program runs, sometimes even passes basic tests, but quietly produces incorrect results. These mistakes are often the most expensive and hardest to find. This article explains the top 10 logical errors developers […]
How to Measure Application Performance Like a Pro
Reading Time: 5 minutesApplications today are expected to load quickly, stay responsive, scale under load, and rarely fail. Users do not care how elegant the code is if pages are slow or requests time out. For developers and engineers, measuring performance is not a nice-to-have skill, it is part of building reliable systems. This article explains how to […]
What Is Multithreading and Why Does It Matter?
Reading Time: 6 minutesModern applications are expected to be fast, responsive, and capable of doing many things at once. Web servers handle thousands of requests, games update physics and graphics in parallel, and desktop apps keep user interfaces smooth while running background tasks. One of the key techniques that makes this possible is multithreading. Understanding what multithreading is […]
The Most Important Programming Concepts Beginners Overlook
Reading Time: 5 minutesMany beginners believe that learning to code simply means learning a programming language. A bit of syntax, a few video tutorials, a small project or two, and they feel ready to move forward. But what truly separates a beginner who repeatedly gets stuck from someone who steadily grows is not a new framework or a […]
CPU vs GPU: Which One Should Your App Rely On?
Reading Time: 4 minutesNot that long ago, choosing compute for your application was simple: you just bought a faster CPU. Today, with GPUs powering machine learning, data analytics, and high-performance workloads, the question is no longer “how many cores?” but rather “CPU or GPU — which one should my app rely on?” In this article, we’ll look at […]
How an Operating System Manages Processes
Reading Time: 6 minutesEvery modern operating system is constantly juggling dozens, hundreds, or even thousands of running programs. Web browsers, databases, background services, and system daemons all compete for CPU time, memory, and I/O. At the center of this orchestration is one key concept: the process. In this article, we’ll explore how an operating system (OS) manages processes: […]
What Exactly Happens When You Run a Program?
Reading Time: 5 minutesWe run programs all the time: double-click an icon, type a command in the terminal, or tap an app on a phone. But under the hood, starting a program is a surprisingly complex chain of events involving the operating system, the CPU, memory, and various runtime components. In this article, we’ll walk through what exactly […]
The Most Common Memory Leaks — And How to Prevent Them
Reading Time: 3 minutesMemory leaks remain one of the most persistent and costly issues in modern software development. They slow down applications, increase latency, degrade server performance, and can even take down entire services in production environments. Contrary to popular belief, memory leaks occur not only in low-level languages like C or C++, but also in high-level environments […]
RAM vs ROM: What’s the Real Difference?
Reading Time: 3 minutesDespite being among the most commonly used hardware terms, RAM and ROM are still frequently misunderstood. Many users assume that ROM is simply “phone storage,” or believe that increasing RAM will magically speed up every device. This confusion isn’t surprising — modern electronics blur the lines between different types of memory. In this guide, you’ll […]
Why Your Application Is Slow: Identifying Performance Bottlenecks
Reading Time: 5 minutesWhat “Slow” Really Means to Your Users Before you open a profiler or tweak a single line of code, you need to understand how “slow” shows up in real use. Often, the same word hides multiple different problems. Slow startup: the app takes a long time to launch or initialize. Slow screen transitions: navigating between […]
From Investigation to System-Level Insight
The origins of 1st Class Investigations are rooted in analytical thinking and technical scrutiny. Historically, investigation has meant more than observation — it has required understanding hidden mechanisms, detecting anomalies, and interpreting signals that are not immediately visible.
In the digital era, many of these investigative principles apply directly to computing systems. Software, hardware, and networked environments operate through layers of abstraction that conceal critical behavior. Performance issues, unexpected execution paths, memory leaks, and background processes often mirror the same patterns once associated with physical surveillance or technical monitoring.
This platform applies investigative logic to modern systems. Articles explore how applications execute instructions, how operating systems manage processes, and how architectural decisions influence performance and stability. By breaking down complex topics into clear explanations, the site bridges the gap between surface-level usage and internal operation.
Understanding systems at this level is essential not only for developers and engineers, but for anyone concerned with reliability, transparency, and control. Hidden processes — whether in software or infrastructure — can affect security, efficiency, and trust. Identifying them requires both technical knowledge and an investigative mindset.
1st Class Investigations continues this tradition by documenting how systems behave under real-world conditions. The focus is not on trends or tools, but on mechanisms: why things slow down, how resources are consumed, and where unintended behavior originates. In doing so, the site preserves the core investigative spirit while applying it to the digital systems that shape modern life.