High-Availability Ingress & Hardened Reverse Proxies: HAProxy & CaddyRené Bon Ćirić
Ingress bottlenecks, ungraceful configuration reloads, single-point-of-failure load balancers, and flawed TLS setups degrade application performance and expose critical backend services to public exploitation.
We design and deploy high-throughput, resilient ingress gateways utilizing synchronized HAProxy and hardened Caddy reverse proxies. Backed by Keepalived Virtual Router Redundancy Protocol (VRRP) for sub-second IP failover, our edge architectures feature automated Let's Encrypt/ZeroSSL TLS certificate lifecycles, intelligent DDoS mitigation rate limiting, dynamic backend health probing, and hitless graceful configuration reloads.
Architecture & Safety Invariants
Sub-Second Failover & High Availability: Redundant gateway pairs sharing Virtual IP (VIP) addresses via Keepalived ensure that host crashes or network drops trigger transparent client failover.
Peak Layer-4 & Layer-7 Performance: HAProxy handles millions of concurrent TCP/HTTP connections with sub-millisecond dispatch latencies and micro-architectural CPU affinity tuning.
Automated Modern Cryptography: Caddy provides out-of-the-box, zero-maintenance automated TLS 1.3 certificates, HTTP/3 (QUIC) performance, and modern cipher suite negotiation.
Hitless Maintenance: Zero-packet-drop runtime state synchronization and seamless reload mechanics ensure continuous uptime during configuration adjustments and patching.
Tangible Engineering Deliverables
Redundant Keepalived VRRP Gateway Pair: Twin edge gateway nodes with Virtual IP (VIP) sharing, automated track scripts, and validated sub-second failover under node reboot simulations.
Production HAProxy Layer-4/7 Routing Engine: High-throughput HAProxy deployment with stick-tables for real-time rate limiting, DDoS mitigation, and dynamic health-check monitors.
Hardened Caddy Edge Proxy with Auto-PKI: Automated TLS 1.3 certificate termination (Let's Encrypt/ZeroSSL), HTTP/3 (QUIC) transport enablement, and mTLS security routes.
Prometheus Metrics & Structured Journald Logging: Native Prometheus exporters tracking connection rates, error codes (4xx/5xx), and backend latencies with journald structured routing.
High-Availability Ingress Runbook & Chaos Drill: Complete administrative documentation detailing VIP management, certificate rotation, and chaos test verification.
FAQs
Example work
Starting at$3,500
Duration1 week
Tags
Caddy
Linux
Architect
DevOps Engineer
Infrastructure
Security
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René Bon Ćirić Ixtlahuacán de los Membrillos, Mexico
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High-Availability Ingress & Hardened Reverse Proxies: HAProxy & CaddyRené Bon Ćirić
Starting at$3,500
Duration1 week
Tags
Caddy
Linux
Architect
DevOps Engineer
Infrastructure
Security
Ingress bottlenecks, ungraceful configuration reloads, single-point-of-failure load balancers, and flawed TLS setups degrade application performance and expose critical backend services to public exploitation.
We design and deploy high-throughput, resilient ingress gateways utilizing synchronized HAProxy and hardened Caddy reverse proxies. Backed by Keepalived Virtual Router Redundancy Protocol (VRRP) for sub-second IP failover, our edge architectures feature automated Let's Encrypt/ZeroSSL TLS certificate lifecycles, intelligent DDoS mitigation rate limiting, dynamic backend health probing, and hitless graceful configuration reloads.
Architecture & Safety Invariants
Sub-Second Failover & High Availability: Redundant gateway pairs sharing Virtual IP (VIP) addresses via Keepalived ensure that host crashes or network drops trigger transparent client failover.
Peak Layer-4 & Layer-7 Performance: HAProxy handles millions of concurrent TCP/HTTP connections with sub-millisecond dispatch latencies and micro-architectural CPU affinity tuning.
Automated Modern Cryptography: Caddy provides out-of-the-box, zero-maintenance automated TLS 1.3 certificates, HTTP/3 (QUIC) performance, and modern cipher suite negotiation.
Hitless Maintenance: Zero-packet-drop runtime state synchronization and seamless reload mechanics ensure continuous uptime during configuration adjustments and patching.
Tangible Engineering Deliverables
Redundant Keepalived VRRP Gateway Pair: Twin edge gateway nodes with Virtual IP (VIP) sharing, automated track scripts, and validated sub-second failover under node reboot simulations.
Production HAProxy Layer-4/7 Routing Engine: High-throughput HAProxy deployment with stick-tables for real-time rate limiting, DDoS mitigation, and dynamic health-check monitors.
Hardened Caddy Edge Proxy with Auto-PKI: Automated TLS 1.3 certificate termination (Let's Encrypt/ZeroSSL), HTTP/3 (QUIC) transport enablement, and mTLS security routes.
Prometheus Metrics & Structured Journald Logging: Native Prometheus exporters tracking connection rates, error codes (4xx/5xx), and backend latencies with journald structured routing.
High-Availability Ingress Runbook & Chaos Drill: Complete administrative documentation detailing VIP management, certificate rotation, and chaos test verification.
FAQs
Example work
$3,500