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MySQL InnoDB Lock Monitoring: Detecting and Killing Blocking Transactions
Monitor InnoDB lock contention with performance_schema.data_locks, find blocking transactions, kill them safely, and prevent escalation with short transactions and proper timeouts.
MySQL 8.4 GTID Replication: Setup, Failover, and Monitoring
MySQL 8.4 GTID replication eliminates binlog position tracking and makes failover deterministic. Learn to configure GTID mode, initialize replicas correctly, and use Orchestrator for automated failover.
MySQL Query Cache Removal: Why It Was Removed and Modern Alternatives
Understand why MySQL removed the query cache in 8.0 and what to use instead: application-level Redis caching, ProxySQL query cache, and pre-computed summary tables.
gh-ost: Trigger-Free Online MySQL Schema Migrations
Migrate MySQL schema changes online with gh-ost using binlog streaming instead of triggers. Covers dynamic throttling via Unix socket, postpone-cut-over flag, and test-on-replica mode.
pt-online-schema-change: Zero-Downtime MySQL ALTER TABLE
Perform zero-downtime MySQL schema changes with pt-online-schema-change. Covers how it works, throttle settings, max-load protection, and when to use gh-ost instead.
InnoDB Buffer Pool Tuning: Sizing, Hit Ratio, and Warm-Up Strategies
Tune the InnoDB buffer pool for maximum MySQL performance. Covers sizing to 70-80% RAM, monitoring hit ratio, dynamic resize, warm-up on restart, and pollution prevention.
Diagnosing and Fixing MySQL Binlog Replication Failures
MySQL replication errors 1062 and 1032 stop your replica SQL thread silently. Learn to diagnose binlog failures, fix data drift with pt-table-sync, and configure GTID-safe replication.
MySQL JSON Columns: Operators, Generated Column Indexes, and Partial Updates
Use MySQL JSON columns effectively with path operators, functional indexes via generated columns, JSON_CONTAINS filtering, and partial updates with JSON_SET.
Password Management in MySQL 8: Policies, Reuse, and Dual Passwords
MySQL 8 introduced comprehensive password management — password validation policies, reuse history, expiration, and dual passwords for zero-downtime credential rotation.
MySQL GTID Replication: Online Migration and Setup Guide
Enable MySQL GTID replication with zero downtime using the 6-step online migration. Covers MASTER_AUTO_POSITION, GTID-incompatible statements, and status monitoring.
MySQL User Permissions Best Practices: Least Privilege and Password Policy
Harden MySQL user permissions with host-scoped grants, validate_password plugin, account locking, and privilege auditing. Essential for SOC2 and PCI-DSS compliance.
MySQL Audit Logging: MariaDB Audit Plugin, General Log, and Trigger-Based Auditing
Implement MySQL audit logging for SOC2, PCI-DSS, and HIPAA compliance. Covers MariaDB Audit Plugin, general query log, trigger-based auditing, and SIEM integration.
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