HTTP Caching - Asset not serving from browser cache after setting Cache-Control Header

Question

Initial Request Second Request I am using a node module(express-cache-ctrl) to enable caching on a a proxy .

app.use(cache.public(3600));

My static assets have a Cache-control header on them with max-age . I am unable to figure out why they reload on a refresh and not served from browser-cache .

Edit : `

var onProxyRes = function(proxyRes, req, res) {
    if ( proxyRes.headers["content-type"] == "text/css" || 
    proxyRes.headers["content-type"] == "application/javascript") {
    proxyRes.headers["Cache-Control"] = "public, max-age=86400";
  }

//add something here to modify proxy response };` Tried manually adding caching header on proxy response also doesn't cache assets

It seems you are using Chrome DevTool's Network panel. By default, the checkbox before "Disable cache" is checked. Have you de-select it? — shaochuancs
– shaochuancs, Commented Sep 13, 2017 at 12:14
It's weird. If cache is not disabled by DevTool, there is nothing wrong according to your screenshot. — shaochuancs
– shaochuancs, Commented Sep 13, 2017 at 12:26
@shaochuancs Btw i am setting my headers at the proxy level . i don't think that should be a problem but i am not sure now — Jeson Dias
– Jeson Dias, Commented Sep 13, 2017 at 12:34
Maybe you can set Cache-Control header at the original server and try again? — shaochuancs
– shaochuancs, Commented Sep 13, 2017 at 12:36

Jeson Dias · Accepted Answer · 2017-09-18 07:08:29Z

2

Found this in a Chrome forum , while running a https server if you have any kind of SSL error then in that case browser prevents caching over HTTPS https://bugs.chromium.org/p/chromium/issues/detail?id=110649. Works for me now

answered Sep 18, 2017 at 7:08

Jeson Dias

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