Configuring Apache as a Reverse Proxy for Backend Abstraction and Load Balancing
Learn how to implement an Apache reverse proxy using mod_proxy and mod_proxy_balancer to abstract backend servers and distribute traffic efficiently.
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Using gRPC Client‑Side Load Balancing Without an External Proxy
Learn how to configure gRPC clients to spread traffic across multiple service instances using built‑in load‑balancing policies, when it makes sense, and what trade‑offs to watch for.
grpcUsing PM2 Cluster Mode to Keep Node.js Apps Online Across CPU Cores
A single Node.js process leaves CPU cores idle and makes restarts painful. PM2 Cluster Mode spreads traffic across workers and lets you reload without dropping requests—if your app shuts down cleanly.
pm2Stopping the Bleed: Using Envoy Outlier Detection for Self-Healing Clusters
Stop a single failing instance from dragging down your entire cluster. Learn how to implement Envoy Outlier Detection to automatically eject unhealthy hosts based on real-time traffic patterns.
Deploying Cloud Armor with HTTP(S) Load Balancing: Minimal Design, Trust Boundaries, and Operational Safeguards
Deploy a global HTTP(S) Load Balancer with Cloud Armor to shield a stateless web app. Learn the minimal design, trust boundaries, operational checks, failure modes, and when to redesign.
Handling Gray Failures with Envoy Outlier Detection
Learn how to use Envoy's outlier detection to automatically eject flaky upstream hosts and prevent retry storms in microservice architectures.
pfSense Multi-WAN: Failover-Only vs. Load-Balancing Decision Guide
Decide between failover-only and load-balancing in pfSense Multi-WAN: gateway group tiers, trigger levels, monitor IP selection, policy routing, and validation steps for 2.7.x/24.03.
Azure Front Door Premium vs Application Gateway: Choosing a WAF-Protected Entry Point
Decide between Azure Front Door Premium and Application Gateway for WAF-protected HTTP entry: a comparison table, the trade-offs that matter, and curl-based validation that your origin only answers through the edge.
NGINX Rate Limiting That Actually Protects Your Backend: limit_req, Bursts, and the 429 Fix
NGINX's limit_req module smooths abusive traffic with a leaky bucket — but the defaults (503 rejections, no burst, IP keys behind a load balancer) are subtly wrong for most APIs. Here's a config that works and how to verify it.
nginx