sinetja

Class NotModified

java.lang.Object

sinetja.NotModified

public class NotModified
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
NotModified()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	formatRfc2822(java.lang.Long timestamp)
static void	setClientCacheAggressively(io.netty.handler.codec.http.HttpHeaders headers) Tells the browser to cache static files for a long time.
static void	setNoClientCache(io.netty.handler.codec.http.HttpHeaders headers) Prevents client cache.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NotModified

public NotModified()

Method Detail

formatRfc2822

public static java.lang.String formatRfc2822(java.lang.Long timestamp)

setClientCacheAggressively

public static void setClientCacheAggressively(io.netty.handler.codec.http.HttpHeaders headers)

Tells the browser to cache static files for a long time. This works well even when this is a cluster of web servers behind a load balancer because the URL created by urlForResource is in the form: resource?etag

Don't worry that browsers do not pick up new files after you modified them, see the doc about static files.

Google recommends 1 year: http://code.google.com/speed/page-speed/docs/caching.html

Both Max-age and Expires header are set because IEs use Expires, not max-age: http://mrcoles.com/blog/cookies-max-age-vs-expires/

setNoClientCache

public static void setNoClientCache(io.netty.handler.codec.http.HttpHeaders headers)

Prevents client cache. Note that "pragma: no-cache" is linked to requests, not responses: http://palizine.plynt.com/issues/2008Jul/cache-control-attributes/