chore: reverting the current implementation of http response caching

controllers/hls.go

@@ -6,7 +6,6 @@ import (
 	"path/filepath"
 	"strconv"
 	"strings"
-	"time"
 
 	"github.com/owncast/owncast/config"
 	"github.com/owncast/owncast/core"
@@ -14,24 +13,8 @@ import (
 	"github.com/owncast/owncast/models"
 	"github.com/owncast/owncast/router/middleware"
 	"github.com/owncast/owncast/utils"
-	log "github.com/sirupsen/logrus"
-	cache "github.com/victorspringer/http-cache"
-	"github.com/victorspringer/http-cache/adapter/memory"
 )
 
-var (
-	hlsCacheAdapter  *cache.Adapter
-	hlsResponseCache *cache.Client
-)
-
-type FileServerHandler struct {
-	HLSPath string
-}
-
-func (fsh *FileServerHandler) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
-	http.ServeFile(rw, r, fsh.HLSPath)
-}
-
 // HandleHLSRequest will manage all requests to HLS content.
 func HandleHLSRequest(w http.ResponseWriter, r *http.Request) {
 	// Sanity check to limit requests to HLS file types.
@@ -40,32 +23,6 @@ func HandleHLSRequest(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	if hlsCacheAdapter == nil {
-		ca, err := memory.NewAdapter(
-			memory.AdapterWithAlgorithm(memory.LRU),
-			memory.AdapterWithCapacity(50),
-			memory.AdapterWithStorageCapacity(104_857_600),
-		)
-		hlsCacheAdapter = &ca
-		if err != nil {
-			log.Warn("unable to create web cache", err)
-		}
-	}
-
-	// Since HLS segments cannot be changed once they're rendered, we can cache
-	// individual segments for a long time.
-	if hlsResponseCache == nil {
-		rc, err := cache.NewClient(
-			cache.ClientWithAdapter(*hlsCacheAdapter),
-			cache.ClientWithTTL(30*time.Second),
-			cache.ClientWithExpiresHeader(),
-		)
-		hlsResponseCache = rc
-		if err != nil {
-			log.Warn("unable to create web cache client", err)
-		}
-	}
-
 	requestedPath := r.URL.Path
 	relativePath := strings.Replace(requestedPath, "/hls/", "", 1)
 	fullPath := filepath.Join(config.HLSStoragePath, relativePath)
@@ -91,10 +48,6 @@ func HandleHLSRequest(w http.ResponseWriter, r *http.Request) {
 	} else {
 		cacheTime := utils.GetCacheDurationSecondsForPath(relativePath)
 		w.Header().Set("Cache-Control", "public, max-age="+strconv.Itoa(cacheTime))
-
-		fileServer := &FileServerHandler{HLSPath: fullPath}
-		hlsResponseCache.Middleware(fileServer).ServeHTTP(w, r)
-		return
 	}
 
 	middleware.EnableCors(w)