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Jean-Marie Renouard - Web and Data Technologist
  • Programming
  • Production
  • MySQL
  • PostgreSQL
  • Français
Jean-Marie Renouard - Web and Data Technologist
  • MySQL, Production

MySQLTuner v2.9.1: Introducing AI-Driven Database Audits and Deep Diagnostics

Discover the new features in MySQLTuner v2.9.1: AI-focused JSON output, Model Context Protocol (MCP) server, deep InnoDB and HA cluster diagnostics, SQL linter, and HA E2E test harness.

  • Jean-Marie Renouard
  • 29/07/2026
  • MySQL, Production

MySQLTuner v2.9.0: Introducing Interactive HTML Reports for Database Optimization

Discover the new Interactive HTML Reports in MySQLTuner v2.9.0! Learn about the self-contained dashboard, resource saturation heatmap, and visual performance indicators.

  • Jean-Marie Renouard
  • 05/07/2026
  • MySQL, Production

Hardening Database Audits: Security and Data Protection Improvements in MySQLTuner

Hardening database audits: learn how MySQLTuner-perl was secured against symlink attacks and credential exposure in log files in the latest v2.8.44 releases.

  • Jean-Marie Renouard
  • 05/07/2026
  • MySQL, Programmation

Modernizing Legacy Perl: How MySQLTuner Reached 92% Test Coverage and Zero-Dependency Autonomy

How do you modernize legacy Perl? Take a look behind the scenes at how the MySQLTuner team achieved a massive leap from 55% to 92% test coverage without using external mocking libraries.

  • Jean-Marie Renouard
  • 05/07/2026
  • MySQL, Production

What’s New in MySQLTuner v2.8.44: A Deep Dive into the Latest 3 Months of Performance Tuning Evolution

Discover the latest features in MySQLTuner v2.8.44! Learn about the new zero-dependency HTML reports, advanced SQL dump compression, and core-aware cache optimization recommendations.

  • Jean-Marie Renouard
  • 05/07/2026
  • Linux, Programmation

Mastering Readline Shortcuts under Linux: Boost Your Command-Line Productivity

Master GNU Readline keyboard shortcuts to double your command-line efficiency and speed up your terminal navigation.

  • Jean-Marie Renouard
  • 26/06/2026
  • PostgreSQL, Production

Live Migration with pgcopydb: Zero Downtime Thanks to Follow Mode

Learn how to use pgcopydb's --follow option and logical replication slots to achieve near-zero downtime live migrations of PostgreSQL databases.

  • Jean-Marie Renouard
  • 15/06/2026
  • PostgreSQL, Production

Technical Architecture and Parallelization in pgcopydb

A deep dive into pgcopydb's multi-process architecture, table chunking features, and parallel index rebuilding capabilities for faster migrations.

  • Jean-Marie Renouard
  • 15/06/2026
  • PostgreSQL, Production

pgcopydb: Redefining PostgreSQL Database Migration

Discover pgcopydb, a high-performance open-source tool by Dimitri Fontaine that revolutionizes PostgreSQL database migration by overcoming the limits of pg_dump.

  • Jean-Marie Renouard
  • 15/06/2026
  • MySQL, Production

Hardening Database Audits: Security and Data Protection Improvements in MySQLTuner

Security auditing tools occupy a unique position in an organization’s security posture. Because they require elevated privileges to read system variables, query databases, and analyze log files, these tools themselves must be highly secure. A vulnerability in an auditing utility…

  • Jean-Marie Renouard
  • 29/05/2026
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