Collect garbage after cache clear and reloading router

cache.go

@@ -9,6 +9,7 @@ import (
 	"net/http"
 	"net/http/httptest"
 	"net/url"
+	"runtime"
 	"strconv"
 	"strings"
 	"time"
@@ -210,6 +211,10 @@ func getCache(key string, next http.Handler, r *http.Request) (item *cacheItem)
 
 func purgeCache() {
 	cacheR.Clear()
+	// Do manual GC
+	go func() {
+		runtime.GC()
+	}()
 }
 
 func setInternalCacheExpirationHeader(w http.ResponseWriter, expiration int) {

http.go

@@ -6,6 +6,7 @@ import (
 	"log"
 	"net/http"
 	"net/url"
+	"runtime"
 	"strconv"
 	"strings"
 	"sync/atomic"
@@ -89,6 +90,11 @@ func reloadRouter() error {
 	}
 	purgeCache()
 	d.swapHandler(h)
+	// Do manual GC
+	go func() {
+		time.Sleep(10 * time.Second)
+		runtime.GC()
+	}()
 	return nil
 }