dont cache if ContentLength greater fileCacheSizeLimit (#108)

Co-authored-by: 6543 <6543@obermui.de>
Reviewed-on: https://codeberg.org/Codeberg/pages-server/pulls/108
Reviewed-by: Otto <otto@codeberg.org>

Justfile

@@ -21,6 +21,10 @@ lint: tool-golangci tool-gofumpt
 fmt: tool-gofumpt
     gofumpt -w --extra .
 
+clean:
+    go clean ./...
+    rm -rf build/
+
 tool-golangci:
     @hash golangci-lint> /dev/null 2>&1; if [ $? -ne 0 ]; then \
     go install github.com/golangci/golangci-lint/cmd/golangci-lint@latest; \

server/upstream/upstream.go

@@ -199,7 +199,7 @@ func (o *Options) Upstream(ctx *fasthttp.RequestCtx, giteaClient *gitea.Client,
 	}
 	log.Debug().Msg("response")
 
-	if res != nil && ctx.Err() == nil {
+	if res != nil && res.Header.ContentLength() > fileCacheSizeLimit && ctx.Err() == nil {
 		cachedResponse.Exists = true
 		cachedResponse.MimeType = mimeType
 		cachedResponse.Body = cacheBodyWriter.Bytes()