Use hashicorp's LRU cache for DNS & certificates

DNS caching is also limited to 30 seconds now instead of 5 minutes

server/handler/handler.go

@@ -4,8 +4,6 @@ import (
 	"net/http"
 	"strings"
 
-	"github.com/OrlovEvgeny/go-mcache"
-
 	"github.com/rs/zerolog/log"
 
 	"codeberg.org/codeberg/pages/config"
@@ -25,7 +23,7 @@ const (
 func Handler(
 	cfg config.ServerConfig,
 	giteaClient *gitea.Client,
-	dnsLookupCache *mcache.CacheDriver, canonicalDomainCache, redirectsCache cache.ICache,
+	canonicalDomainCache, redirectsCache cache.ICache,
 ) http.HandlerFunc {
 	return func(w http.ResponseWriter, req *http.Request) {
 		log.Debug().Msg("\n----------------------------------------------------------")
@@ -110,7 +108,7 @@ func Handler(
 				trimmedHost,
 				pathElements,
 				cfg.PagesBranches[0],
-				dnsLookupCache, canonicalDomainCache, redirectsCache)
+				canonicalDomainCache, redirectsCache)
 		}
 	}
 }