MySQL
8.4 LTSHigh-Concurrency ACIDMySQL InnoDB tuning references, deadlock & lock wait timeout triage, InnoDB Cluster + Router HA architecture blueprints, and OCP 8.0 DBA exam topic map.
Runbooks
Emergency drills & step-by-step operational triage procedures
Content for this module is currently in engineering preparation for MySQL.
PostgreSQL Runbooks assetsError Codes
Error codes, crisis symptoms & root-cause resolutions
MySQL ERROR 1045 Access denied: root Password Reset Guide
Four causes of MySQL 1045, meaning of using password: YES/NO, and safe credential recovery via --init-file.
MySQL Deadlock ERROR 1213: Graph Analysis and Permanent Prevention
Root causes of MySQL 1213 deadlock, parsing LATEST DETECTED DEADLOCK output, gap lock concurrency issues, and resilient application retry design.
MySQL Lock wait timeout exceeded: Finding Blocking Sessions
Finding the blocking transaction using performance_schema, safe KILL decision matrices, and permanent locking reduction.
MySQL 1452 Foreign Key Constraint Fails: Cause and Fix
Distinction between 1452 and 1451, charset and data type mismatch, finding orphan rows, and safe bulk data loading procedures.
MySQL "No space left on device" and "Table is full" Resolution
Distinction between ERROR 28 and ERROR 1114, binlog and undo bloat, inode exhaustion, and non-destructive disk reclamation.
CheatSheets
Quick CLI, syntax reference cards & downloadable PDF posters
InnoDB Tuning Reference
Buffer pool sizing formula (70-80%), redo log and flush policies, I/O capacity, production my.cnf template, and SHOW ENGINE INNODB STATUS triage guide.
MySQL Backup & Recovery
Logical backups with mysqldump and MySQL Shell dumpInstance, physical backups with Percona XtraBackup, Point-in-Time Recovery via binary logs, and the CLONE plugin.
MySQL OCP 8.0 DBA Exam Topic Map
All 7 domains of Oracle 1Z0-908 MySQL 8.0 Database Administrator exam: Architecture, Install/Config, Security, Monitoring, Query Optimization, Backup/Recovery, HA, and pitfalls.
Architectural Blueprints
End-to-end HA, DR, RAG & enterprise infrastructure designs
MySQL InnoDB Cluster + Group Replication + MySQL Router Architecture
Native MySQL high-availability architecture driven by Paxos group replication protocol. Runs in single-primary mode to eliminate write conflicts and routes traffic transparently via MySQL Router.
Engineering Deep Dive
Engine internals, memory layout, kernel interaction & algorithms
Content for this module is currently in engineering preparation for MySQL.
PostgreSQL Engineering Deep Dive assetsUpcoming Modules Under Development for MySQL
Our engineering team is actively authoring production guides across the following 8 domain modules.
Tuning & Parameters
Parameter templates & workload-specific fine-tuning guides
Metrics & Observability
Metric thresholds, Prometheus/Grafana dashboards & alerting formulas
SQL Scripts & Toolbox
Health checks, lock triage & diagnostic SQL scripts
Migrations & Upgrades
Major version upgrades, zero-downtime data migration & cross-engine cutovers
Security & Hardening
Hardening, CIS benchmarks, pgaudit, TDE & regulatory audits
Field Notes
Real-world production outages, incident analysis & post-mortems
Interactive Calculators
Hardware sizing tools, config generators & RPO/RTO calculators