how to clear cache in gwt?

by

When you deploy a GWT-application it’s important to avoid proxies and browsers to cache the .nocache.js-files generated by GWT. One solution is to implement a servlet filter that adds the necessary HTTP-headers that control the caching behaviour.

Here’s such a filter: http://seewah.blogspot.com/2009/02/gwt-tips-2-nocachejs-getting-cached-in.html

The headers in that example are:

Date: Wed, 24 Nov 2010 20:32:43 GMT
Expires: Wed, 01 Nov 2000 00:00:00 GMT
Pragma: no-cache
Cache-Control: no-cache, no-store, must-revalidate

Date should be set to the time of the request.

Expires is best set to sometime in the past, this forces everyone to consider the content already stale.

Pragma is a tag that has been superseded by Cache-Control, but it doesn’t hurt to have it.

Cache-Control no-cache means a browser or proxy must revalidate a cached copy before releasing it to the client. no-store means no one is ever keeping a cached copy (which makes no-cache redundant). must-revalidate says the browser/proxy must obey freshness information and revalidate, also redundant with no-store.

More Related Contents:

  1. Super Dev mode in GWT
  2. GWT module may need to be (re)compiled REDUX
  3. Multiple pages tutorial in Google Web Toolkit (GWT)
  4. Date time library for gwt
  5. How can a user download a file in client side (Google Web Toolkit)
  6. Calling GWT Java function from JavaScript
  7. Using the GWT Scheduler
  8. How do I select only visible elements using XPath?
  9. Java 8 support in GWT
  10. Firing click event from code in gwt
  11. GWT.setUncaughtExceptionHandler()
  12. Using GWT Editors with a complex usecase
  13. GWT RPC data format
  14. How do I speed up the gwt compiler?
  15. Basic File upload in GWT
  16. Is a colon `:` safe for friendly-URL use?
  17. GWT: Timer and Scheduler Classes
  18. HTMLUnit doesn’t wait for Javascript
  19. Best GWT widget library? [closed]
  20. Json Java serialization that works with GWT [closed]
  21. I want to vertical-align text in select box
  22. How to use the GWT EventBus
  23. Extract all string from a java project
  24. java.lang.SecurityException: sealing violation:
  25. How do I pass a class as a parameter in Java?
  26. Regular Expressions and GWT
  27. Development Mode requires the GWT Developer Plugin
  28. “Tainted canvases may not be loaded” Cross domain issue with WebGL textures
  29. google appengine not supporting FileOutputStream
  30. GWT Custom Events

Leave a Comment