This Razer Keypad Tries to Fix Awkward PC Game Controls

How Symmetric Encryption (Fernet) Keeps Local Credentials Safe on Disk

Desktop apps that talk to servers over SSH or an API often need to remember a password or key between launches. Asking the user to retype it every time isn't realistic, but saving it as plain text in…

• Symmetric encryption (Fernet) protects local credentials by encrypting data with AES and HMAC.
• Fernet combines encryption, signing, timestamping, and Base64 encoding for secure storage.
• Key management is crucial; Fernet stores a key in a hidden directory with duplicate backup.

3h ago ·dev.to

What Is DPI? 72 vs 300 vs 600 DPI Explained

What Is DPI? 72 vs 300 vs 600 DPI Explained DPI stands for Dots Per Inch. It is commonly used when preparing images for printing. Different projects may require different DPI settings.

• DPI stands for Dots Per Inch, a measure of image resolution.
• 72 or 300 DPI are common settings for screen and print tasks respectively.
• DPIFix tool helps adjust image DPI for various formats.

2h ago ·dev.to

The CancellationToken That Never Propagated: A Subtle ASP.NET Core Timeout Bug I Missed in Code Review

The CancellationToken That Never Propagated: A Subtle ASP.NET Core Timeout Bug I Missed in Code Review In the early stages of my career, I believed that if an HTTP request had a timeout set, the…

• ASP.NET Core bug caused application instability under heavy load
• Missing cancellation propagation to background tasks led to issues
• Fix involved propagating CancellationToken to cancel background work

2h ago ·dev.to

Building a Zero-Lag Client-Side Python Visualizer with Pyodide & WebAssembly

Understanding code execution, call stacks, and pointer mutations can be tricky—especially when debugging complex algorithms, recursion, or data structures like linked lists and trees.

2h ago ·dev.to