diff --git a/cmd/cgr-engine/cgr-engine.go b/cmd/cgr-engine/cgr-engine.go
index c05f9f680..d5c221e77 100644
--- a/cmd/cgr-engine/cgr-engine.go
+++ b/cmd/cgr-engine/cgr-engine.go
@@ -138,8 +138,8 @@ func startCdrc(internalCdrSChan chan *engine.CdrServer, internalRaterChan chan *
 
 func startSmGeneric(internalSMGChan chan rpcclient.RpcClientConnection, internalRaterChan chan *engine.Responder, server *utils.Server, exitChan chan bool) {
 	utils.Logger.Info("Starting CGRateS SM-Generic service.")
-	raterConn := &rpcclient.RpcClientPool{}
-	cdrsConn := &rpcclient.RpcClientPool{}
+	raterConn := rpcclient.NewRpcClientPool(rpcclient.POOL_FIRST)
+	cdrsConn := rpcclient.NewRpcClientPool(rpcclient.POOL_FIRST)
 	var client *rpcclient.RpcClient
 	var err error
 	// Connect to rater
@@ -227,8 +227,8 @@ func startDiameterAgent(internalSMGChan chan rpcclient.RpcClientConnection, exit
 
 func startSmFreeSWITCH(internalRaterChan chan *engine.Responder, cdrDb engine.CdrStorage, exitChan chan bool) {
 	utils.Logger.Info("Starting CGRateS SM-FreeSWITCH service.")
-	raterConn := &rpcclient.RpcClientPool{}
-	cdrsConn := &rpcclient.RpcClientPool{}
+	raterConn := rpcclient.NewRpcClientPool(rpcclient.POOL_FIRST)
+	cdrsConn := rpcclient.NewRpcClientPool(rpcclient.POOL_FIRST)
 	var client *rpcclient.RpcClient
 	var err error
 	// Connect to rater
@@ -277,8 +277,8 @@ func startSmFreeSWITCH(internalRaterChan chan *engine.Responder, cdrDb engine.Cd
 
 func startSmKamailio(internalRaterChan chan *engine.Responder, cdrDb engine.CdrStorage, exitChan chan bool) {
 	utils.Logger.Info("Starting CGRateS SM-Kamailio service.")
-	raterConn := &rpcclient.RpcClientPool{}
-	cdrsConn := &rpcclient.RpcClientPool{}
+	raterConn := rpcclient.NewRpcClientPool(rpcclient.POOL_FIRST)
+	cdrsConn := rpcclient.NewRpcClientPool(rpcclient.POOL_FIRST)
 	var client *rpcclient.RpcClient
 	var err error
 	// Connect to rater
@@ -327,8 +327,8 @@ func startSmKamailio(internalRaterChan chan *engine.Responder, cdrDb engine.CdrS
 
 func startSmOpenSIPS(internalRaterChan chan *engine.Responder, cdrDb engine.CdrStorage, exitChan chan bool) {
 	utils.Logger.Info("Starting CGRateS SM-OpenSIPS service.")
-	raterConn := &rpcclient.RpcClientPool{}
-	cdrsConn := &rpcclient.RpcClientPool{}
+	raterConn := rpcclient.NewRpcClientPool(rpcclient.POOL_FIRST)
+	cdrsConn := rpcclient.NewRpcClientPool(rpcclient.POOL_FIRST)
 	var client *rpcclient.RpcClient
 	var err error
 	// Connect to rater
diff --git a/cmd/cgr-engine/rater.go b/cmd/cgr-engine/rater.go
index 83aa71506..76239b479 100644
--- a/cmd/cgr-engine/rater.go
+++ b/cmd/cgr-engine/rater.go
@@ -238,6 +238,7 @@ func startRater(internalRaterChan chan *engine.Responder, internalBalancerChan c
 	}
 
 	responder := &engine.Responder{Bal: bal, ExitChan: exitChan, Stats: cdrStats}
+	responder.SetTimeToLive(cfg.ResponseCacheTTL)
 	apierRpcV1 := &v1.ApierV1{StorDb: loadDb, RatingDb: ratingDb, AccountDb: accountDb, CdrDb: cdrDb, LogDb: logDb, Sched: sched,
 		Config: cfg, Responder: responder, CdrStatsSrv: cdrStats, Users: userServer}
 	apierRpcV2 := &v2.ApierV2{
diff --git a/engine/responder.go b/engine/responder.go
index 8c228bf27..46e26a80a 100644
--- a/engine/responder.go
+++ b/engine/responder.go
@@ -57,12 +57,8 @@ type Responder struct {
 	responseCache *cache2go.ResponseCache
 }
 
-func NewResponder(exitChan chan bool, cdrSrv *CdrServer, stats rpcclient.RpcClientConnection, timeToLive time.Duration) *Responder {
-	return &Responder{
-		ExitChan:      exitChan,
-		Stats:         stats,
-		responseCache: cache2go.NewResponseCache(timeToLive),
-	}
+func (rs *Responder) SetTimeToLive(timeToLive time.Duration) {
+	rs.responseCache = cache2go.NewResponseCache(timeToLive)
 }
 
 func (rs *Responder) getCache() *cache2go.ResponseCache {