QUICK START:PatternsErrors & FixesSecurityBenchmarksDevOps RecipesCheatsheetsInterviewCompareTopicsHTMLCSSJavaScriptTypeScriptPythonSQLReactNext.jsNode.jsLinux & UbuntuKotlinSwiftC# / .NETJavaGoRustC++DSASystem DesignDevOpsCybersecurityAI / ML

Infrastructure Recipes

Step-by-step production configuration playbooks and code snippets for robust, scalable infrastructure.

IntermediateWeb & Load Balancing

Production NGINX Config: Reverse Proxy, WebSockets & Rate Limiting

Deploy a production-grade NGINX reverse proxy featuring WebSocket support, HTTP/3, and robust rate limiting to protect backend services.

NGINXLinuxDocker
IntermediateCI/CD & Automation

Production systemd Unit File: Sandboxing & Auto-Restart

Create highly secure systemd service unit files featuring resource limits, kernel sandboxing, and reliable auto-restart capabilities.

systemdLinux
AdvancedDatabase & Storage

PostgreSQL Zero-Downtime Schema Migrations

Execute PostgreSQL schema migrations without downtime using safe DDL operations, lock timeouts, and concurrent index creation.

PostgreSQL
IntermediateKubernetes & Containers

Kubernetes Ingress with cert-manager & Let's Encrypt

Automate SSL/TLS certificate provisioning and renewal in Kubernetes using Ingress-NGINX and cert-manager with Let's Encrypt.

KubernetesHelmcert-manager
AdvancedCI/CD & Automation

Production GitHub Actions: Docker Buildx & Cache Mounts

Optimize CI/CD pipelines with GitHub Actions by implementing Docker Buildx, multi-platform builds, and aggressive layer caching.

GitHub ActionsDocker
AdvancedObservability & Monitoring

Production Prometheus Alerting Rules: SLIs/SLOs

Deploy production-grade Prometheus alerting rules covering CPU, Memory, Disk saturation, and latency SLO violations.

PrometheusAlertmanager
ExpertObservability & Monitoring

OpenTelemetry Collector Pipeline: Tempo & Mimir

Configure an OpenTelemetry Collector pipeline to route distributed traces to Grafana Tempo and metrics to Grafana Mimir.

OpenTelemetryGrafana TempoGrafana Mimir
IntermediateNetworking & Security

Modern Linux Firewall: nftables Hardening

Secure your Linux servers using modern nftables firewall rulesets tailored for Web, Database, and SSH hardening.

nftablesLinux
AdvancedNetworking & Security

WireGuard Site-to-Site Mesh VPN for VPC Peering

Set up a highly performant, secure WireGuard site-to-site mesh VPN to connect hybrid cloud VPCs and on-premise networks.

WireGuardLinux Networking
ExpertDatabase & Storage

PostgreSQL Change Data Capture (CDC) with Debezium

Implement real-time Change Data Capture (CDC) using PostgreSQL Logical Replication, Kafka, and Debezium.

PostgreSQLDebeziumKafka
IntermediateCI/CD & Automation

Production Terraform: Multi-AZ AWS VPC

Provision a highly available, multi-tier AWS VPC architecture using Terraform, featuring public subnets, private subnets, and NAT Gateways.

TerraformAWS
AdvancedDatabase & Storage

High-Availability Redis: Sentinel Auto-Failover

Configure a High-Availability Redis architecture utilizing Master-Replica replication and Redis Sentinel for automatic failover.

RedisRedis Sentinel
AdvancedWeb & Load Balancing

FFmpeg HLS Video Transcoding & Adaptive Bitrate

Build a high-speed FFmpeg pipeline for transcoding video files into HTTP Live Streaming (HLS) format with adaptive bitrate.

FFmpegBash
ExpertWeb & Load Balancing

Apache Kafka Exactly-Once Processing

Implement Apache Kafka Idempotent Producers and Exactly-Once transactional consumers for critical financial pipelines.

KafkaJava
AdvancedDatabase & Storage

Elasticsearch ILM: Hot-Warm-Cold Architecture

Design an Elasticsearch Index Lifecycle Management (ILM) policy featuring Hot-Warm-Cold architecture and rollover triggers.

Elasticsearch