Tech Tutorials

Hands-on with A1 Croatia's prepaid eSIM: EUR 3 online ordering with credit returned, the 180/92/270-day validity mechanics behind the "EUR 2 per year" claim, and which platforms actually deliver SMS while roaming in China.

Cloudflare Workers Free can run a small read-only API, but the daily request and CPU limits shape what belongs there. A practical guide to scope, secrets, caching, rate limits, and launch checks.

This tutorial encrypts Hermes data, sends daily backups to private Cloudflare R2 with Rclone and Cron, applies retention, and tests recovery.

This 2026 guide compares low-cost VPS plans from $7 yearly by hardware, network quality, renewal terms, reliability, region, and suitable workloads.

This WordPress guide improves LCP, INP, and CLS using image priority, faster servers, delayed JavaScript, reserved dimensions, caching, and testing.

Is Tailscale cross-region networking worth the effort? Real tests across home, office and cloud servers: latency, throughput, stability and cost, with setup tips.

Why Tailscale is still my go-to for intranet access after months of use: compared with frp, ZeroTier and port forwarding, covering setup, Tailnet config and pitfalls.

A practical fix for VirtualBox performance issues caused by Intel's hybrid P-core/E-core architecture, covering CPU affinity optimization and BIOS-level adjustments, with real benchmark data.

Tired of renewing free SSL certificates every 3 months on platforms like Alibaba Cloud and Tencent Cloud? This guide walks you through Cloudflare's 15-year free SSL certificate application process, which even supports wildcard domains.

A complete guide to deleting GitHub credentials on Windows 10 & 11, covering environment setup through commit and push — perfect for developers new to the Git workflow.