How to reduce database load by caching
From Resin 3.0
(Difference between revisions)
(New page: Category: HowTo === cache.jsp === <%@ page import="com.caucho.cluster.*" %> <%! @javax.webbeans.Current Cache _cache; %> <% String value = (String) _cache.get("my-key"...) |
(→WEB-INF/resin-web.xml) |
||
| Line 24: | Line 24: | ||
xmlns:cluster="urn:java:com.caucho.cluster"> | xmlns:cluster="urn:java:com.caucho.cluster"> | ||
| − | <cluster:TriadCache name="my-cache"/> | + | <cluster:TriadCache name="my-cache" |
| + | expire-timeout="10m"/> | ||
</web-app> | </web-app> | ||
Revision as of 07:25, 14 January 2009
cache.jsp
<%@ page import="com.caucho.cluster.*" %>
<%! @javax.webbeans.Current Cache _cache; %>
<%
String value = (String) _cache.get("my-key");
if (value != null) {
out.println("old: " + value);
}
else {
value = calculate_slow_value();
_cache.put("my-key", value);
out.println("new: " + value);
}
%>
WEB-INF/resin-web.xml
<web-app xmlns="http://caucho.com/ns/resin" xmlns:cluster="urn:java:com.caucho.cluster"> <cluster:TriadCache name="my-cache" expire-timeout="10m"/> </web-app>
