BestHub
Sign in
Xiao Liu Lab
Xiao Liu Lab
Nov 10, 2025 · Operations

Why a Healthy Frontend Still Returns 504 Errors: An MTU Mismatch Case Study

A production incident showed that despite flawless frontend health metrics and no logged errors, a subset of users experienced 504 Gateway Timeout errors caused by an MTU mismatch in the network path, highlighting the need for end‑to‑end connectivity checks beyond application monitoring.

504 timeoutMSS clampingMTU
0 likes · 9 min read
Why a Healthy Frontend Still Returns 504 Errors: An MTU Mismatch Case Study
Selected Java Interview Questions
Selected Java Interview Questions
Sep 22, 2025 · Backend Development

Quickly Diagnose Spring Boot + Nacos + MySQL Microservice Failures

This guide provides a step‑by‑step troubleshooting workflow for Spring Boot microservices using Nacos as a config/registry and MySQL as the database, covering log inspection, process checks, port listening, network connectivity, configuration validation, database connectivity, system resources, startup commands, and an optional one‑click diagnostic script.

LinuxMySQLNacos
0 likes · 9 min read
Quickly Diagnose Spring Boot + Nacos + MySQL Microservice Failures