Simple VCL Puppet template with caching

gistfile1.txt

# This file is managed by Puppet. Manual changes will be destroyed.

# A naively simple config to cache items for <%= @cache_ttl %> and serve stale objects
# for up to <%= @grace_ttl %> on backend outage (data reload)

vcl 4.0;

# Default backend definition.
backend default {
  .host = "127.0.0.1";
  .port = "<%= @proxy_port %>";
  .connect_timeout = 2s;
  .first_byte_timeout = 30s;
  .probe = {
        .url = "/";
        .timeout = 15s;
        .interval = 30s;
        .window = 5;
        .threshold = 3;
  }
}

sub vcl_backend_response {
  set beresp.grace = <%= @grace_ttl %>;
  set beresp.ttl = <%= @cache_ttl %>;
}