In this post, I will build a minimal ping-pong server and client in Rust using tokio-tungstenite, and use the client to measure real round-trip times across 100 exchanges (collecting min, avg, and max latency) using a Cloudflare Tunnel between them. I want to use this test for a future blog post where I will try to encapsulate other protocols in it.
While building a TCP server (TcpListener) in Rust, I needed to process connections one at a time. I kept noticing that new connections were being accepted but never actually processed, they just hung in standby until the client gave up and disconnected. In this post, I will walk through a minimal TCP server that uses a Semaphore to force max concurrent connections.
In the future, I want to start building battery powered projects, so understanding power consumption becomes critical. In this post, I will explore deep sleep power consumption on the ESP32-C6 board using Rust with Embassy and Esp-hal. Beyond simply putting the board to sleep, I’ll also examine the key factors that affect deep sleep current on this board, such as providing the correct voltage to the battery pin.
To keep an eye on my services and servers by monitoring how resources are being used and whether something is about to break, I took some time to explore what tools and services exist that are open-source and lightweight. I found that Beszel fits in nicely: it’s quick to deploy and easy to understand.
Recently, I set out to explore how to read and write the memory of a running process in Rust. Programming isn’t just about writing code that runs—it’s also about understanding what happens under the hood. Sometimes it is necessary to understand how memory works, for debugging, or even implement a simple IPC mechanism without going through sockets or shared memory. This experiment turned into a neat experiment that combines Linux internals (process_vm_readv/process_vm_writev), unsafe Rust, and a reminder of why process isolation is such an important security boundary.
Docker’s default storage location (/var/lib/docker) can fill up quickly, especially on systems with limited space like a Raspberry Pi’s SD card. This guide walks you through installing Docker on Debian and moving its storage to an external disk for better performance and management. Let’s dive in!
For future projects and out of personal curiosity, I want to explore authentication management platforms beyond Keycloak, which I’ve already used. In this post, I’ll take a look at Casdoor, an Identity and Access Management (IAM) and Single Sign-On (SSO) solution with a user-friendly UI, built in Go 😎. I chose Casdoor for its extensive third-party login support, customizable login themes, and a unique payment integration feature. Let’s see how it performs! 🚀
