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Ranjan 
Master NGINX Unit polyglot architecture to run Python, PHP, and Node.js on a single port. Eliminate reverse proxy latency with dynamic JSON runtime config.
Architect high-availability MySQL 9 environments with zero-downtime physical replication. Master GTID failover, ProxySQL routing, and kernel tuning.
Scale PostgreSQL 17 to tens of thousands of concurrent connections. Optimize Linux Huge Pages, PgBouncer pooling, and shared buffers for low latency.
Deploy a low-latency WireGuard mesh overlay across multi-region Linux VPS clusters. Achieve direct peer-to-peer routing and kernel-level throughput.
Master cPanel & WHM defense-in-depth in 2026 using ModSecurity OWASP rules, CSF/LFD stateful firewalling, and ImunifyAV automated malware protection.
Master LiteSpeed worker process tuning for 100K concurrent connections. Learn kernel sysctl parameters, epoll sizing, and high-throughput production configs.
Optimize Linux block layer I/O schedulers for high-concurrency NVMe SSDs. Learn when to choose none over mq-deadline to maximize IOPS and slash tail latency.
Master the architecture of rebootless server maintenance using Linux kernel livepatching to achieve 99.999% availability in enterprise production environments.
Master the architecture of rebootless kernel maintenance using Kpatch to secure mission-critical Linux infrastructure without service interruption or maintenance windows.
Master the next generation of Kubernetes observability using eBPF to eliminate sidecar overhead and achieve deep kernel-level performance insights on high-concurrency nodes.