A simple caching forward HTTP proxy.

Can use a Badger DB backend for a standalone cache proxy or a Redis backend for a shared cache proxy (multiple proxy instance can share the same cache).

Proxy something:

docker run --rm -it \
 -e UPSTREAM_URL=https://github.com \
 -p 8080:80 \
 pierredavidbelanger/cache-proxy:latest

Query it:

$ time curl localhost:8080/pierredavidbelanger/cache-proxy > /dev/null
 % Total % Received % Xferd Average Speed Time Time Time Current
 Dload Upload Total Spent Left Speed
100 88362 0 88362 0 0 123k 0 --:--:-- --:--:-- --:--:-- 123k
real 0m0.712s
user 0m0.009s
sys 0m0.005s
$ time curl localhost:8080/pierredavidbelanger/cache-proxy > /dev/null
 % Total % Received % Xferd Average Speed Time Time Time Current
 Dload Upload Total Spent Left Speed
100 88362 0 88362 0 0 84.2M 0 --:--:-- --:--:-- --:--:-- 84.2M
real 0m0.011s
user 0m0.011s
sys 0m0.000s

UPSTREAM_URL: (no default, must be set)

LOG_LEVEL: verbosity: trace, debug, info, warn, error, fatal, panic (default info)

ATTEMPT_HTTP2: should go http client attempt to use HTTP2 (default false)

TTL: time to live of the entries in the cache (default 5m)

FRONTEND_URL: (default :8080 for the go version, or :80 for the docker version)

BACKEND_URL: the cache backed, a valid redis:// (see redis options) or badger:// URL spec (default badger:///tmp/cache-proxy for the go version, or badger:///var/cache-proxy for the docker version)