diff --git a/go.mod b/go.mod
index 0712d659..49cec94f 100644
--- a/go.mod
+++ b/go.mod
@@ -50,6 +50,8 @@ require (
 	sigs.k8s.io/yaml v1.3.0
 )
 
+replace github.com/vitkovskii/insane-json => github.com/DmitryRomanov/insane-json v0.1.6-0.20240926122634-ddd151e16a6e
+
 require (
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
 	github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a // indirect
diff --git a/go.sum b/go.sum
index bc79b75e..ae3d74ef 100644
--- a/go.sum
+++ b/go.sum
@@ -2,6 +2,8 @@ cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/ClickHouse/ch-go v0.58.2 h1:jSm2szHbT9MCAB1rJ3WuCJqmGLi5UTjlNu+f530UTS0=
 github.com/ClickHouse/ch-go v0.58.2/go.mod h1:Ap/0bEmiLa14gYjCiRkYGbXvbe8vwdrfTYWhsuQ99aw=
+github.com/DmitryRomanov/insane-json v0.1.6-0.20240926122634-ddd151e16a6e h1:RSaL4V1x1McvmpbZDcGF1i03q9ZiwT0yJ6NYEl5ipxA=
+github.com/DmitryRomanov/insane-json v0.1.6-0.20240926122634-ddd151e16a6e/go.mod h1:xQyYcnFJ8ElboaEZG805SrQ7I4QupForGkm0/TnRaZ8=
 github.com/KimMachineGun/automemlimit v0.2.6 h1:tQFriVTcIteUkV5EgU9iz03eDY36T8JU5RAjP2r6Kt0=
 github.com/KimMachineGun/automemlimit v0.2.6/go.mod h1:pJhTW/nWJMj6SnWSU2TEKSlCaM+1N5Mej+IfS/5/Ol0=
 github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
@@ -389,8 +391,6 @@ github.com/valyala/bytebufferpool v1.0.0 h1:GqA5TC/0021Y/b9FG4Oi9Mr3q7XYx6Kllzaw
 github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyCJ6HpOuEn7z0Csc=
 github.com/valyala/fasthttp v1.48.0 h1:oJWvHb9BIZToTQS3MuQ2R3bJZiNSa2KiNdeI8A+79Tc=
 github.com/valyala/fasthttp v1.48.0/go.mod h1:k2zXd82h/7UZc3VOdJ2WaUqt1uZ/XpXAfE9i+HBC3lA=
-github.com/vitkovskii/insane-json v0.1.7 h1:A84WpQ/xGw8SSzzbLTkTI6PD2IYAVWjTlgaxN/rCAnw=
-github.com/vitkovskii/insane-json v0.1.7/go.mod h1:xQyYcnFJ8ElboaEZG805SrQ7I4QupForGkm0/TnRaZ8=
 github.com/xdg-go/pbkdf2 v1.0.0 h1:Su7DPu48wXMwC3bs7MCNG+z4FhcyEuz5dlvchbq0B0c=
 github.com/xdg-go/pbkdf2 v1.0.0/go.mod h1:jrpuAogTd400dnrH08LKmI/xc1MbPOebTwRqcT5RDeI=
 github.com/xdg-go/scram v1.1.2 h1:FHX5I5B4i4hKRVRBCFRxq1iQRej7WO3hhBuJf+UUySY=
diff --git a/pipeline/pipeline.go b/pipeline/pipeline.go
index 62a67530..0536304d 100644
--- a/pipeline/pipeline.go
+++ b/pipeline/pipeline.go
@@ -116,6 +116,7 @@ type Pipeline struct {
 
 	// all pipeline`s metrics
 	inUseEventsMetric          prometheus.Gauge
+	decoderPoolSize            prometheus.Gauge
 	eventPoolCapacityMetric    prometheus.Gauge
 	inputEventsCountMetric     prometheus.Counter
 	inputEventSizeMetric       prometheus.Counter
@@ -225,6 +226,7 @@ func (p *Pipeline) IncMaxEventSizeExceeded() {
 func (p *Pipeline) registerMetrics() {
 	m := p.actionParams.MetricCtl
 	p.inUseEventsMetric = m.RegisterGauge("event_pool_in_use_events", "Count of pool events which is used for processing")
+	p.decoderPoolSize = m.RegisterGauge("decoder_pool_size", "Size of decoder pool")
 	p.eventPoolCapacityMetric = m.RegisterGauge("event_pool_capacity", "Pool capacity value")
 	p.inputEventsCountMetric = m.RegisterCounter("input_events_count", "Count of events on pipeline input")
 	p.inputEventSizeMetric = m.RegisterCounter("input_events_size", "Size of events on pipeline input")
@@ -838,6 +840,8 @@ func (p *Pipeline) maintenance() {
 		myDeltas := p.incMetrics(inputEvents, inputSize, outputEvents, outputSize, readOps)
 		p.setMetrics(p.eventPool.inUseEvents.Load())
 		p.logChanges(myDeltas)
+
+		p.decoderPoolSize.Set(float64(insaneJSON.LenghtDecoderPool()))
 	}
 }