Using MySQL Offline Mode to Disconnect Client Connections

This article explains how MySQL's offline_mode variable and the pt‑kill tool can be used by DBAs to place a server in maintenance mode, instantly dropping non‑privileged client connections, preventing new ones, and providing a safe way to perform maintenance or backups.

Database MaintenanceOFFLINE_MODEPT-kill

0 likes · 8 min read

Using MySQL Offline Mode to Disconnect Client Connections

Aikesheng Open Source Community

Oct 29, 2019 · Databases

Automatic Member Fencing with OFFLINE_MODE in MySQL Group Replication

The article explains how MySQL Group Replication handles unintended member exits, introduces the OFFLINE_MODE option added in 8.0.18, and shows how DBAs can configure and query the system to maintain high availability during failures.

Database AdministrationGroup ReplicationOFFLINE_MODE

0 likes · 5 min read

Automatic Member Fencing with OFFLINE_MODE in MySQL Group Replication

Youzan Coder

Aug 2, 2019 · Mobile Development

Implementation of Offline Mode Switching in an iOS Retail Client

The article explains how the Youzan iOS retail client implements a robust offline‑mode switching system that detects network or service faults—via Reachability, RealReachability, and a QoS‑based error pipeline—allows manual or automatic activation, manages state with a finite‑state machine, and prepares for future data‑sync handling.

Mobile DevelopmentOFFLINE_MODEclient architecture

0 likes · 11 min read

Implementation of Offline Mode Switching in an iOS Retail Client