diff --git a/include/proto/backend.h b/include/proto/backend.h
index 74caaaa..68ba3d6 100644
--- a/include/proto/backend.h
+++ b/include/proto/backend.h
@@ -23,6 +23,7 @@
 #define _PROTO_BACKEND_H
 
 #include <common/config.h>
+#include <common/time.h>
 
 #include <types/backend.h>
 #include <types/proxy.h>
@@ -43,6 +44,13 @@
 void update_backend_weight(struct proxy *px);
 struct server *get_server_sh(struct proxy *px, const char *addr, int len);
 struct server *get_server_uh(struct proxy *px, char *uri, int uri_len);
+int be_lastsession(const struct proxy *be);
+
+/* set the time of last session on the backend */
+static void inline be_set_sess_last(struct proxy *be)
+{
+	be->be_counters.last_sess = now.tv_sec;
+}
 
 /* This function returns non-zero if a server with the given weight and state
  * is usable for LB, otherwise zero.
diff --git a/include/proto/server.h b/include/proto/server.h
index 93f4f81..750d8d5 100644
--- a/include/proto/server.h
+++ b/include/proto/server.h
@@ -25,14 +25,17 @@
 #include <unistd.h>
 
 #include <common/config.h>
+#include <common/time.h>
 #include <types/proxy.h>
 #include <types/queue.h>
 #include <types/server.h>
 
 #include <proto/queue.h>
+#include <proto/log.h>
 #include <proto/freq_ctr.h>
 
 int srv_downtime(const struct server *s);
+int srv_lastsession(const struct server *s);
 int srv_getinter(const struct check *check);
 
 /* increase the number of cumulated connections on the designated server */
@@ -44,6 +47,12 @@
 		s->counters.sps_max = s->sess_per_sec.curr_ctr;
 }
 
+/* set the time of last session on the designated server */
+static void inline srv_set_sess_last(struct server *s)
+{
+	s->counters.last_sess = now.tv_sec;
+}
+
 #endif /* _PROTO_SERVER_H */
 
 /*
diff --git a/include/types/counters.h b/include/types/counters.h
index efb48f6..ecdc7cb 100644
--- a/include/types/counters.h
+++ b/include/types/counters.h
@@ -29,6 +29,7 @@
 	long long    cum_conn;                  /* cumulated number of received connections */
 	long long    cum_sess;                  /* cumulated number of accepted connections */
 	long long  cum_lbconn;                  /* cumulated number of sessions processed by load balancing (BE only) */
+	unsigned long last_sess;                /* last session time */
 
 	unsigned int cps_max;                   /* maximum of new connections received per second */
 	unsigned int sps_max;                   /* maximum of new connections accepted per second (sessions) */
@@ -85,6 +86,7 @@
 
 	long long cum_sess;			/* cumulated number of sessions really sent to this server */
 	long long cum_lbconn;			/* cumulated number of sessions directed by load balancing */
+	unsigned long last_sess;                 /* last session time */
 
 	long long bytes_in;			/* number of bytes transferred from the client to the server */
 	long long bytes_out;			/* number of bytes transferred from the server to the client */