Add some comments for recent code (#22725)

When using the main branch, I found that some changed code didn't have
comments.

This PR adds some comments.
This commit is contained in:
wxiaoguang 2023-02-03 01:39:38 +08:00 committed by GitHub
parent 368d43643f
commit ccb3851281
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
3 changed files with 32 additions and 0 deletions

View file

@ -19,6 +19,8 @@ import (
func AddCacheControlToHeader(h http.Header, maxAge time.Duration, additionalDirectives ...string) {
directives := make([]string, 0, 2+len(additionalDirectives))
// "max-age=0 + must-revalidate" (aka "no-cache") is preferred instead of "no-store"
// because browsers may restore some input fields after navigate-back / reload a page.
if setting.IsProd {
if maxAge == 0 {
directives = append(directives, "max-age=0", "private", "must-revalidate")