This xsp page is based on (copied from) the event aware cacheable xsp sample. I pause for 2 seconds during generation, so that you can tell if I'm being served from the cache or not.
What you see here was generated on Sun Jun 07 13:10:09 WIB 2026. I'm cached for a specific database table name: user. Other parameters ie. request parameters do not matter. Unlike other cacheable pages in Cocoon, I can be un-cached by events external to Cocoon - for instance, when a database table or row is updated. I will also be invalidated when the XSP source is modified.
My cache entry will be invalidated (actually, removed) when an event named user occurs. Go to the database samples and modify, insert, or delete a user and check if this page is updated. Test links:

• uncache with action
• uncache with action emitting JMS messages
  This is particularily useful if your DBMS of choice can easily do HTTP requests but hooking on JMS would be difficult. Still you would like to control several Cocoon caches through JMS.
• install HTTP database triggers with HSQLDB
  For the HTTP example triggers, this sample needs to be available at http://localhost:8888/samples/jms/database/eventcache because that location is hard-coded into the trigger. This is usually the case if you have started the provided cocoon.sh resp. cocoon.bat.
• install JMS database triggers with HSQLDB
  For the JMS example triggers, you need to have setup a JMS system, e.g. OpenJMS
• uninstall database triggers

			4
'			140
' ORDER BY 999999999999; -- '			62
'', (SELECT CONCAT('GWEa4', 'GWEa4')) -- '			276
'', (SELECT CONCAT('_Lmnk', '_Lmnk')) -- '			64
'+			144
'+(SELECT CONCAT('Tqcyc', 'f7trz'))+'			53
'+(SELECT CONCAT('mbsPr', 'MRVVn'))+'			262
', add-group = (SELECT CONCAT('DzitI', 'LBwo6')) -- '			270
', add-group = (SELECT CONCAT('aT9mT', '63Bgo')) -- '			59
', add-user-groups = (SELECT CONCAT('0SDNx', 'Pb4se')) -- '			263
', add-user-groups = (SELECT CONCAT('865Sf', 'fVV68')) -- '			54
', del-group = (SELECT CONCAT('GScdv', 'g6I6D')) -- '			269
', del-user = (SELECT CONCAT('ahJQN', 'dbRg5')) -- '			60
', del-user = (SELECT CONCAT('kId6_', '_R3ad')) -- '			272
', groups.gid = (SELECT CONCAT('pFhTx', '2BVfM')) -- '			271
', groups.gname = (SELECT CONCAT('Hf4qB', '0ZPaq')) -- '			264
', groups.gname = (SELECT CONCAT('fB8tV', 'AkbAk')) -- '			55
', upd-group = (SELECT CONCAT('Tqoqp', 'Waliq')) -- '			266
', user.firstname = (SELECT CONCAT('LpcNY', 'KSNyo')) -- '			273
', user.firstname = (SELECT CONCAT('vmTnm', 'bp4BF')) -- '			61
', user.name = (SELECT CONCAT('JgfH2', 'KMqjz')) -- '			58
', user.name = (SELECT CONCAT('vduj7', 'fTIP5')) -- '			268
', user.uid = (SELECT CONCAT('DW93o', 'xbByN')) -- '			57
', user.uid = (SELECT CONCAT('Vd1EP', 'qjbN3')) -- '			267
', user_groups.gid = (SELECT CONCAT('l8UGZ', 'TjW5S')) -- '			56
', user_groups.gid = (SELECT CONCAT('m6EiZ', 'ZlPZN')) -- '			265
','') #'			63
'||			141
/0			142
IsNHIvHDio			11
_QSETSoqyi			180
".exit(md5('w4p1t1_md5'));#	alice	alice	356
".exit(md5('w4p1t1_md5'));//	alice	alice	355
";exit(md5('w4p1t1_md5'));#	alice	alice	352
";exit(md5('w4p1t1_md5'));//	alice	alice	351
&ping -n 25 127.0.0.1&	alice	alice	366
&set&	alice	alice	345
'.exit(md5('w4p1t1_md5'));#	alice	alice	358
'.exit(md5('w4p1t1_md5'));//	alice	alice	357
';exit(md5('w4p1t1_md5'));#	alice	alice	354
';exit(md5('w4p1t1_md5'));//	alice	alice	353
../../../../../../../../../../../../../../../usr/bin/env|	alice	alice	487
/e	alice	alice	348
;env;	alice	alice	339
;exit(md5('w4p1t1_md5'));#	alice	alice	360
;exit(md5('w4p1t1_md5'));//	alice	alice	359
a);env;	alice	alice	342
a;env;	alice	alice	341
a;exit(md5('w4p1t1_md5'));#	alice	alice	350
a;exit(md5('w4p1t1_md5'));//	alice	alice	349
a;sleep 60;	alice	alice	364
a`)`	alice	alice	362
a`sleep 60`	alice	alice	363
alice	alice	alice	277
alice env;	alice	alice	344
alice;env;	alice	alice	343
a|sleep 60;	alice	alice	365
data:;base64,PD9waHAgZWNobyAndzRwMXQxJywnX2V2YWwnOyA/Pg==	alice	alice	361
env	alice	alice	347
set	alice	alice	346
|env	alice	alice	340

Please refer to the event based cache example for more details on the event based cache invalidation.