diff -udrT httpd-2.2.10/modules/cache/mod_cache.c httpd-2.2.10-patched/modules/cache/mod_cache.c
--- httpd-2.2.10/modules/cache/mod_cache.c	2008-05-28 00:23:12.000000000 +0800
+++ httpd-2.2.10-patched/modules/cache/mod_cache.c	2008-11-24 11:53:21.000000000 +0800
@@ -18,6 +18,9 @@
	
	#include "mod_cache.h"
	
+	// Added by agentzh:
+	#define DONT_CARE_EXPIRE_STRING 1
+	
	module AP_MODULE_DECLARE_DATA cache_module;
	APR_OPTIONAL_FN_TYPE(ap_cache_generate_key) *cache_generate_key;
	
@@ -385,17 +388,25 @@
	    /* read expiry date; if a bad date, then leave it so the client can
	     * read it
	     */
-	    exps = apr_table_get(r->err_headers_out, "Expires");
-	    if (exps == NULL) {
-	        exps = apr_table_get(r->headers_out, "Expires");
-	    }
-	    if (exps != NULL) {
-	        if (APR_DATE_BAD == (exp = apr_date_parse_http(exps))) {
-	            exps = NULL;
+	
+	    // Added by agentzh:
+	    if (conf->override_expire_set) {
+	        // Added by agentzh:
+	        exps = DONT_CARE_EXPIRE_STRING;
+	        exp = r->request_time + conf->override_expire;
+	    } else {
+	        exps = apr_table_get(r->err_headers_out, "Expires");
+	        if (exps == NULL) {
+	            exps = apr_table_get(r->headers_out, "Expires");
+	        }
+	        if (exps != NULL) {
+	            if (APR_DATE_BAD == (exp = apr_date_parse_http(exps))) {
+	                exps = NULL;
+	            }
+	        }
+	        else {
+	            exp = APR_DATE_BAD;
	        }
-	    }
-	    else {
-	        exp = APR_DATE_BAD;
	    }
	
	    /* read the last-modified date; if the date is bad, then delete it */
@@ -1136,6 +1147,19 @@
	    return NULL;
	}
	
+	// Added by agentzh:
+	static const char *set_cache_override_expire(cmd_parms *parms, void *dummy,
+	                                   const char *arg)
+	{
+	    cache_server_conf *conf;
+	
+	    conf =
+	        (cache_server_conf *)ap_get_module_config(parms->server->module_config,
+	                                                  &cache_module);
+	    conf->override_expire = (apr_time_t) (atol(arg) * MSEC_ONE_SEC);
+	    conf->override_expire_set = 1;
+	    return NULL;
+	}
	static const char *set_cache_factor(cmd_parms *parms, void *dummy,
	                                    const char *arg)
	{
@@ -1221,6 +1245,10 @@
	    AP_INIT_TAKE1("CacheLastModifiedFactor", set_cache_factor, NULL, RSRC_CONF,
	                  "The factor used to estimate Expires date from "
	                  "LastModified date"),
+	    // Added by agentzh:
+	    AP_INIT_TAKE1("CacheOverrideExpire", set_cache_override_expire, NULL, RSRC_CONF,
+	                  "The expiration time overridding the one specified by the documents (if any)"),
+	
	    {NULL}
	};
	
diff -udrT httpd-2.2.10/modules/cache/mod_cache.h httpd-2.2.10-patched/modules/cache/mod_cache.h
--- httpd-2.2.10/modules/cache/mod_cache.h	2007-05-18 05:03:04.000000000 +0800
+++ httpd-2.2.10-patched/modules/cache/mod_cache.h	2008-11-24 11:53:22.000000000 +0800
@@ -153,6 +153,9 @@
	    /** ignore query-string when caching */
	    int ignorequerystring;
	    int ignorequerystring_set;
+	    // Added by agentzh:
+	    int override_expire;
+	    int override_expire_set;
	} cache_server_conf;
	
	/* cache info information */
diff -udrT httpd-2.2.10/modules/cache/mod_mem_cache.c httpd-2.2.10-patched/modules/cache/mod_mem_cache.c
--- httpd-2.2.10/modules/cache/mod_mem_cache.c	2007-09-04 19:39:58.000000000 +0800
+++ httpd-2.2.10-patched/modules/cache/mod_mem_cache.c	2008-11-24 11:53:22.000000000 +0800
@@ -311,6 +311,10 @@
	    cache_object_t *obj, *tmp_obj;
	    mem_cache_object_t *mobj;
	
+	    ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, r->server,
+	                    "Creating entity...",
+	                    key);
+	
	    if (len == -1) {
	        /* Caching a streaming response. Assume the response is
	         * less than or equal to max_streaming_buffer_size. We will