network failure — 3 Technical Articles

Nov 18, 2025 · Operations

What Triggered the Massive Cloudflare Outage on Nov 18 2025?

On November 18 2025 Cloudflare suffered a widespread network failure that crippled its CDN, DNS, and reverse‑proxy services, causing global sites like ChatGPT and X to return 502‑504 errors before engineers applied temporary mitigations and gradually restored service.

CDNCloudflareOutage

0 likes · 5 min read

What Triggered the Massive Cloudflare Outage on Nov 18 2025?

Liangxu Linux

Aug 6, 2022 · Operations

When Core Switches Suddenly Die: The Hidden SSD Time‑Bomb in Network Gear

A network engineer recounts a terrifying outage caused by a firmware‑related SSD bug that locks core switches after 28,224 hours of use, explains the emergency troubleshooting steps taken, and highlights the need for better vendor recall mechanisms to protect critical infrastructure.

Hardware ReliabilitySSD bugTroubleshooting

0 likes · 8 min read

When Core Switches Suddenly Die: The Hidden SSD Time‑Bomb in Network Gear

Programmer DD

Oct 8, 2020 · Databases

Why MySQL Transactions Hang After Network Failure and How to Kill Stuck Sessions

This article explains how MySQL transactions behave when a client’s network connection is abruptly lost, why the server does not automatically abort the transaction, and provides practical scripts and configuration tips to detect and kill long‑running idle transactions.

Database OperationsMySQLTimeout

0 likes · 15 min read

Why MySQL Transactions Hang After Network Failure and How to Kill Stuck Sessions

What Triggered the Massive Cloudflare Outage on Nov 18 2025?

When Core Switches Suddenly Die: The Hidden SSD Time‑Bomb in Network Gear

Why MySQL Transactions Hang After Network Failure and How to Kill Stuck Sessions

What Triggered the Massive Cloudflare Outage on Nov 18 2025?