Caddy vs Envoy Proxy
A detailed comparison to help you choose between Caddy and Envoy Proxy.
Quick Verdict
4.2/5
Caddy
0 reviews
4.2/5
Envoy Proxy
0 reviews
Both Caddy and Envoy Proxy are equally rated at 4.2/5. Caddy is a modern open source web server and load balancer with automatic HTTPS (Let's Encrypt/ZeroSSL) by default. No SSL configuration needed. Used for reverse proxying and load balancing. Envoy is an open source L7 proxy and service mesh foundation. Used as the data plane in Istio, AWS App Mesh, and Consul Connect. High performance, built for microservices and Kubernetes.
Caddy Automatic HTTPS load balancer and web server | Envoy Proxy Cloud-native proxy and service mesh sidecar | |
|---|---|---|
| Overview | ||
| Rating | 4.2 (0 reviews) | 4.2 (0 reviews) |
| Pricing model | free | free |
| Starting price | Free | Free |
| Best for | Developers and SaaS teams who want a reverse proxy or web server that handles TLS certificates automatically with minimal configuration | Platform engineering teams on Kubernetes standardising ingress, mesh and egress traffic management on one open data plane, with the in-house or vendor expertise to own a control plane. |
| Features | ||
| IPv6 | ||
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ||
| Tags | ||
| Tags | free tieropen sourceself hostable | free tieropen source |
| Visit Caddy → | Visit Envoy Proxy → | |
Caddy
Pros
- + Automatic HTTPS by default — certificate issuance and renewal built in
- + Free, Apache 2.0, single static Go binary with no runtime dependencies
- + Reverse proxy with load balancing, health checks, HTTP/2 and HTTP/3
- + On-Demand TLS for SaaS platforms issuing certs on customer domains
- + Live JSON config API plus Caddyfile; fleet-wide cert coordination via shared storage
Cons
- - Raw throughput behind Nginx at extreme concurrency
- - Smaller module ecosystem; plugins require compiling a custom binary
- - Businesses are expected to buy sponsorships ($2,999/mo+) for support
- - No SLA or contractual support from a large vendor
Envoy Proxy
Pros
- + Free forever: Apache 2.0, no seats, no per-node licence, no usage metering
- + CNCF graduated with neutral governance and multi-vendor support options
- + xDS APIs are the de facto standard control-plane interface for service meshes and gateways
- + Depth of features: HTTP/3, gRPC-aware load balancing, circuit breaking, external auth, rate limiting, hot cert rotation
- + Documented support window (four minor versions patched) and a decade of production track record
- + Extensive observability hooks: stats, tracing headers, structured access logs
Cons
- - Configuration complexity is high; production-grade setups need a control plane or serious in-house expertise
- - No SLA or commercial support bundled — community support only
- - Sidecar overhead (latency and memory per proxy) is a real cost in large mesh deployments
- - C++ codebase narrows the pool of people who can debug core-level issues
- - Troubleshooting spans both Envoy docs and whatever control plane generates your config
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