In-depth engineering analysis: Go GC latency optimization on 24-core nodes: GOGC, GOMEMLIMIT and memory layout. Practical diagnostics, logs and production configuration.

In-depth engineering analysis: Migrating crontab spaghetti to systemd timers: memory isolation, logs and restart policies. Practical diagnostics, logs and production configuration.

In-depth engineering analysis: eBPF XDP: dropping 14 Mpps SYN floods at the NIC driver layer. Practical diagnostics, logs and production configuration.

In-depth engineering analysis: PostgreSQL connection starvation: PgBouncer transaction mode pitfalls with prepared statements. Practical diagnostics, logs and production configuration.

In-depth engineering analysis: Why we replaced Logstash with Vector: reducing RAM from 4 GB to 120 MB. Practical diagnostics, logs and production configuration.

In-depth engineering analysis: Rust zero-allocation ring buffer for high-throughput packet processing. Practical diagnostics, logs and production configuration.

In-depth engineering analysis: Linux sysctl tuning for 100k concurrent WebSocket connections on a single node. Practical diagnostics, logs and production configuration.

In-depth engineering analysis: systemd-resolved in isolated VPC: DNS caching gotchas and split-horizon resolution. Practical diagnostics, logs and production configuration.

In-depth engineering analysis: MySQL 5.7 to 8.0 upgrade: optimizer regression with utf8mb4_0900_ai_ci collation. Practical diagnostics, logs and production configuration.

In-depth engineering analysis: Migrating from iptables-legacy to nftables on a 40G edge router. Practical diagnostics, logs and production configuration.