Surgical InnoDB Buffer Pool tuning, high-availability replication (InnoDB Cluster / Group Replication), live SQL profiling, and direct expertise from the MySQLTuner co-author.
Elite Consultancy & Open-Core Publisher • Critical DB, DevOps & Platform Engineering
High-Performance Mission-Critical Databases with Total Operational Control
Elite engineering consultancy and Open-Core publisher anchored on Security, High Availability, and Performance. We operate and automate your mission-critical databases using modern DevOps and Platform Engineering technologies (GitOps, Kubernetes DBaaS), introducing rational and secure AI directly within databases for efficient, sovereign data processing—without vendor lock-in.
$
lightpath-ctl check-platform --cluster=prod-data-platform --verify-pillars
[PLATFORM]
Cloud-Native DBaaS: Kubernetes v1.30 (GitOps Synced)
[SECURITY]
CIS Benchmarks: 100% Passed (TLS 1.3 • Data-at-Rest Encrypted)
[AVAILABILITY]
HA Quorum: Multi-AZ Synchronous (RPO: 0.00s • Failover: < 2s)
[PERFORMANCE]
P99 Query Latency: 1.1ms (Buffer Pool Hit: 99.85% • Zero Drifts)
[IN-DB AI]
Embedded Intelligence: pgvector & In-Engine Models (Zero Data Egress • DORA Compliant)
MySQLTuner • CIS Benchmarks Tools • In-Database AI
Free Diagnostic
The 3 Pillars & Platform Engineering
Security, Availability, Performance: Modern Database Engineering
From deep storage engine internals to declarative Kubernetes DBaaS platforms, we eliminate latency bottlenecks and guarantee sovereign data independence.
Performance Pillar
Extreme Storage Engine Tuning & Query Profiling
By the co-author of MySQLTuner: surgical memory sizing (Buffer Pool, log buffers, execution plan caches), live production SQL profiling, deadlock elimination, and composite indexing for sub-millisecond latencies.
P99 Query Latency
18.4ms → 1.1ms (-94%)
InnoDB Buffer Pool Hit Rate
99.85%
MySQL 8.4 LTS
PostgreSQL 16
MariaDB 11.4
Query Profiler
InnoDB Internals
Buffer Pool Tuning
Platform Engineering
Platform Engineering & GitOps DBaaS
Industrializing databases on Kubernetes (CloudNativePG, native operators). Self-service developer data platforms, Infrastructure as Code (Terraform, Ansible), and drift-free GitOps pipelines.
- Self-service Kubernetes DBaaS
- GitOps pipelines & Schema as Code
- Zero-downtime deployments & migrations
Kubernetes
CloudNativePG
Terraform
GitOps
Security Pillar
CIS Security & Data Integrity
Automated hardening and compliance powered by our Open Source CIS Benchmarks Tools suite (v2.9.1, 18 CIS & DISA STIG benchmarks, 887 controls, 100% Python PSL Air-Gapped). Least-privilege RBAC, TLS 1.3 / TDE encryption, and SIEM exports.
CIS Tools v2.9.1
18 Benchmarks / 887 Controls
DISA STIG
TLS 1.3
Availability Pillar
High Availability & DRP Resilience
Distributed, multi-zone topologies with zero downtime: Galera clusters, synchronous/asynchronous replication, and Raft consensus. Seamless automated failover, zero data loss (RPO=0), and battle-tested DRP strategies.
Galera Cluster
Multi-AZ HA
Quorum Raft
PRA / PCA
In-Database AI & Secure Data Processing Pillar
In-Database AI: Secure, Rationalized Data Processing with Zero Data Egress
Extract maximum value from your data where it actually resides without costly, opaque external GPU infrastructure. We integrate AI rationally and securely directly inside your database engines (PostgreSQL pgvector, pg_ai, local embedding models, in-engine vector search): automated classification, high-velocity semantic queries, anomaly detection, and security guardrails with zero network latency, zero data egress, and native DORA & GDPR compliance.
PostgreSQL pgvector
Zéro Data Egress
pg_ai & Modèles In-Engine
Recherche Sémantique
Conformité DORA & RGPD
MCP Data Connectors
Souveraineté Totale
The 5 Database Families • 12 Engines
Mastery of the Open Source & Distributed Database Ecosystem
Explore the 12 database engines we architect, secure, and tune in mission-critical production. Filter by family or swipe through the carousel.
Memory optimization (shared_buffers, work_mem), Patroni HA clusters, declarative partitioning, advanced indexing (GIN/BRIN), and Oracle / SQL Server migrations.
Synchronous multi-master MariaDB Galera Clusters (up to 250 TB operated in production at RENATER), intelligent MaxScale routing, and zero-downtime resilience.
Sovereign Open Source drop-in replacement for Redis (Linux Foundation): sub-millisecond distributed caching, multi-threaded I/O engine, and full license freedom.
In-memory data structures, ultra-high-throughput real-time session state, Redis Cluster / Sentinel topologies, and seamless migration paths to sovereign Valkey.
Operations on massive document estates (600+ MongoDB databases at BNP Paribas / BP2I): WiredTiger tuning, horizontal sharding, multi-DC Replica Sets, and Percona MongoDB.
Masterless distributed clusters with zero SPOF (23 banking clusters at BP2I and 12 TB IoT at EDF Datanumia): wide-column modeling, JVM/compaction tuning, and multi-DC replication.
Real-time NoSQL engine with Hybrid Memory Architecture (DRAM + native NVMe Flash) built to sustain millions of transactions per second at sub-millisecond P99 latency.
Ultra-fast C++ shard-per-core NoSQL database (Cassandra CQL & DynamoDB compatible), eliminating JVM Garbage Collection pauses for predictable extreme throughput.
Distributed NewSQL and HTAP database (TiKV row store + TiFlash columnar engine) with native MySQL compatibility: elastic horizontal scaling and Raft consensus.
Leading CNCF Kubernetes operator for declarative PostgreSQL lifecycle management: automated failover, continuous S3/Barman backups, and zero-downtime rolling updates.
Engineering self-service data platforms on Kubernetes: tuned StatefulSets, low-latency local NVMe CSI storage, K8ssandra / Percona operators, and strict network isolation.
Platform Engineering, IaC, GitOps & CI/CD
Platform Engineering & DevOps Automation Stack
From Ansible, Terraform, and OpenTofu to ArgoCD, Jenkins, Rundeck, Ansible Tower, GitLab CI, and GitHub Actions: we industrialize the entire lifecycle of your data platforms.
Idempotent playbooks and roles to industrialize database cluster provisioning, CIS Benchmarks hardening, rolling patching, and drift-free configuration management.
Enterprise automation control plane (operated at BNP Paribas / BP2I): RBAC governance, multi-stage operational workflows, self-service REST API, and full audit trails.
Declarative, modular multi-cloud data infrastructure provisioning (120+ AWS RDS instances and EKS clusters at EDF Datanumia) with strict state governance.
Sovereign Linux Foundation Open Source successor to Terraform: native end-to-end state encryption, drop-in HCL compatibility, and zero proprietary license risk.
Declarative GitOps engine for Kubernetes: continuous reconciliation between Git repositories and production database clusters, drift detection, and instant rollbacks.
Enterprise Pipelines-as-Code (Groovy) automation in banking environments (La Banque Postale): automated PostgreSQL/Patroni provisioning, backups, and load testing.
Secure operational runbook execution and SRE self-service: one-click DRP failovers, guided diagnostics, controlled maintenance tasks, and incident auto-remediation.
End-to-end DevSecOps CI/CD pipelines: automated schema migration linting (Liquibase / Flyway), SQL regression benchmarking, and gated multi-stage deployments.
Event-driven continuous integration workflows: ephemeral database matrix testing, CIS compliance verification, security scanning, and automated release pipelines.
Containerization and orchestration for high-availability data platforms: standardized Helm charts, Kubernetes operators, resource quotas, and persistent CSI storage.
High-resolution database telemetry: dedicated exporters (mysqld_exporter, postgres_exporter, Cassandra JMX), P99 latency dashboards, and noise-free predictive alerting.
Cryptographic protection and dynamic secret management: short-lived ephemeral database credentials, automated TLS 1.3 PKI certificates, and TDE key management.
Open-Core Publisher: DB, CIS Security & Automation
MySQLTuner, CIS Benchmarks & In-Database AI
As the co-developer of MySQLTuner-perl (8,400+ GitHub stars, --agent-json mode and MCP connector), creator of the CIS Benchmarks Tools v2.9.1 suite (18 CIS & DISA STIG benchmarks, 887 zero-dependency Python PSL controls), and expert in rational in-database AI integration, Jean-Marie Renouard audits, scales, and secures your stack from disk persistence to advanced data operations.
major / MySQLTuner-perl
High-Performance Diagnostic Suite
2.9.3
Version
300+
Tuning Rules
Millions
Server Audits
jmrenouard / cis_benchmarks_tools
PyPI: cis-benchmarks-tools • 100% Python PSL
18
CIS Benchmarks
887
Security Controls
4 Modes
Local/SSH/Docker
In-Database AI • pgvector • pg_ai
Sovereign In-Engine Analytics • Zero Egress
100%
Sovereignty
0 ms
Network Egress
DORA
Conformité
Execution Pipeline
Our Engagement Methodology
A rigorous, measurable, zero-downtime engineering pipeline built for velocity.
01
Diagnostic & Mapping
Deep surgical analysis of configs, system logs, CIS compliance benchmarks, and query profiling to identify bottlenecks with certainty.
02
DevOps & Platform Automation
Pipeline industrialization (CI/CD), declarative Kubernetes DBaaS deployment, automated regression testing, and schema drift validation.
03
Engine Tuning & Long-Term Resilience
Precision tuning of InnoDB/Postgres parameters, index optimization, senior knowledge transfer, and proactive telemetry monitoring.
MySQL MariaDB PostgreSQL Valkey Redis MongoDB Cassandra Aerospike ScyllaDB TiDB CloudNativePG Kubernetes Ansible Ansible Tower Terraform OpenTofu ArgoCD Jenkins Rundeck GitLab CI GitHub Actions Grafana Vault MySQL MariaDB PostgreSQL Valkey Redis MongoDB Cassandra Aerospike ScyllaDB TiDB CloudNativePG Kubernetes Ansible Ansible Tower Terraform OpenTofu ArgoCD Jenkins Rundeck GitLab CI GitHub Actions Grafana Vault
Executive Testimonials
Endorsements from Engineering Leaders
“Jean-Marie distinguished himself by his technical mastery, rigor and responsiveness, in particular in the management of critical incidents and the optimization of our databases. Appreciated for his professionalism, I highly recommend him.”
“Jean-Marie did a great job delivering advanced database training for our enterprise clients. He has always given full satisfaction by knowing how to adapt to complex requirements. His database depth is impressive.”
Trusted by Leading Enterprises • 15 Clients
Trusted with Their Mission-Critical Data Infrastructures
Tier-1 banks, energy utilities, telecom operators, national retailers, and global media: explore our verified production engagements and real-world scale.