cache-control

I'm trying to cache the response of http calls done by Retrofit(v 1.9.0) with OkHttp(2.3.0). It always made the network calls if I try to make a call without internet then java.net.UnknownHostException . RestClient public class RestClient { public static final String BASE_URL = "http://something.example.net/JSONService"; private com.ucc.application.rest.ApiService apiService; public RestClient() { Gson gson = new GsonBuilder() .setDateFormat("yyyy'-'MM'-'dd'T'HH':'mm':'ss'.'SSS'Z'") .create(); RequestInterceptor requestInterceptor = new RequestInterceptor() { @Override public void intercept

When I visit chesseng.herokuapp.com I get a response header that looks like Cache-Control:private Connection:keep-alive Content-Encoding:gzip Content-Type:text/css Date:Tue, 16 Oct 2012 06:37:53 GMT Last-Modified:Tue, 16 Oct 2012 03:13:38 GMT Status:200 OK transfer-encoding:chunked Vary:Accept-Encoding X-Rack-Cache:miss and then I refresh the page and get Cache-Control:private Connection:keep-alive Date:Tue, 16 Oct 2012 06:20:49 GMT Status:304 Not Modified X-Rack-Cache:miss so it seems like caching is working. If that works for caching then what is the point of Expires and Cache-Control:max

What’s the difference between Expires and Cache-Control headers? A Lee Cache-Control was introduced in HTTP/1.1 and offers more options than Expires . They can be used to accomplish the same thing but the data value for Expires is an HTTP date whereas Cache-Control max-age lets you specify a relative amount of time so you could specify "X hours after the page was requested". HTML Cache control is a very similar question and has a good link to a caching tutorial that should answer most of your questions (e.g., http://www.mnot.net/cache_docs/#EXPIRES ). To sum up though, Expires is recommended

I am working on a Struts 2 project. When user clicks a logout button the logout action clears the session using session.clear() . But when user clicks the back button in the browser after logout, it still displays the previous page content. I want to redirect an user to the login page, if the back button was clicked in the browser after logout. Is there anything else I should clear in my logout action to solve this problem? Any help will be greatly appreciated. Turns out that your browser is caching pages before you press the back button. The browser caching mechanism is designed so to

I have a couple of queries related to Cache-Control. If I specify Cache-Control max-age=3600, must-revalidate for a static html/js/images/css file, with Last Modified Header defined in HTTP header: Does browser/proxy cache(like Squid/Akamai) go all the way to origin server to validate before max-age expires ? Or will it serve content from cache till max-age expires? After max-age expiry (that is expiry from cache), is there a If-Modified-Since check or is content re-downloaded from origin server w/o If-Modified-Since check? a) If the server includes this header: Cache-Control "max-age=3600,

How do you add an Expires or a Cache-Control header in JSP? I want to add a far-future expiration date in an include page for my static components such as images, CSS and JavaScript files. BalusC To disable browser cache for JSP pages, create a Filter which is mapped on an url-pattern of *.jsp and does basically the following in the doFilter() method: HttpServletResponse httpResponse = (HttpServletResponse) response; httpResponse.setHeader("Cache-Control", "no-cache, no-store, must-revalidate"); // HTTP 1.1 httpResponse.setHeader("Pragma", "no-cache"); // HTTP 1.0 httpResponse.setDateHeader(