Posts

fio: File System Performance Benchmarking

fio is a versatile tool for stress testing and benchmarking disks and filesystems. It can generate a wide variety of I/O patterns, report latency and throughput statistics, and help you compare hardware or configuration changes. Installation Debian/Ubuntu sudo apt-get update sudo apt-get install fio CentOS/RHEL sudo yum install fio macOS (Homebrew) brew install fio To build from source, clone the repository and run make && sudo make install: git clone https://github.com/axboe/fio.git cd fio make sudo make install Verify the installation with fio --version.

Friday, August 22, 2025 | 2 minutes Read

Kafka Basics: Theory and Python Examples

Apache Kafka is a distributed platform for handling real‑time event streams. It provides three main capabilities: Publish and subscribe to streams of events. Store those streams durably and reliably for as long as needed. Process streams of events as they occur or later. Events, Producers, and Consumers An event (or record/message) captures that “something happened” in your system. Client applications that write events are called producers, while those that read events are consumers.

Tuesday, August 19, 2025 | 4 minutes Read

GitHub Actions Basics

GitHub Actions is GitHub’s built-in automation platform. It lets you build, test, and deploy your code right from GitHub. Key Concepts Workflow: Automated process defined in a YAML file inside .github/workflows/. Event: Trigger that starts a workflow, such as a push, pull request, or schedule. Job: A set of steps executed on the same runner. Step: An individual task in a job that can run commands or actions. Action: Reusable extension that performs a specific task. Actions can come from the marketplace or your repository. Runner: The server that executes your jobs. GitHub-hosted runners cover common environments, or you can use self-hosted runners. Example Workflow Create a file named .github/workflows/ci.yml in your repository:

Thursday, May 30, 2024 | 2 minutes Read