What must I do to make content such as images served over HTTPS be cached client-side?

Question

I am using Tomcat as a server and Internet Explorer 6 as a browser. A web page in our app has about 75 images. We are using SSL. It seems to be very slow at loading all the cont

Answer 1

Some browsers will cache SSL content. Firefox 2.0+ does not cache SSL resources on disc by default (for increased privacy). Firefox 3+ doesn't cache them on disc unless the Cache-control:public header appears.

So set the Expires: header correctly and Cache-control:public. e.g.

        # Expire these things
        # Three days after access time
        ExpiresDefault  "now plus 3 days"
        # This makes Firefox 3 cache images over SSL
        Header set Cache-Control public