diff --git a/.vscode/launch.json b/.vscode/launch.json
new file mode 100644
index 00000000..3d3af470
--- /dev/null
+++ b/.vscode/launch.json
@@ -0,0 +1,32 @@
+{
+  "version": "0.2.0",
+  "configurations": [
+    {
+      "name": "Debug run go",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}/main.go",
+      "cwd": "${workspaceFolder}",
+      "env": {
+        "GOROOT":"C:/Go",
+      },
+      "args": [
+      ]
+    },
+    {
+      "name": "Debug run example Server",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}/examples/program/server/main.go",
+    },
+    {
+      "name": "Debug run example Client",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "program": "${workspaceFolder}/examples/program/client/main.go",
+    },
+  ]
+}
diff --git a/app/cache/memory/memory.go b/app/cache/memory/memory.go
index 02132ba3..f960c05e 100644
--- a/app/cache/memory/memory.go
+++ b/app/cache/memory/memory.go
@@ -49,6 +49,7 @@ func (m *memoryCache) String() string {
 	return "memory"
 }
 
+//NewCache return cache
 func NewCache(opts ...cache.Option) cache.Cache {
 	return &memoryCache{
 		values: make(map[string]interface{}),
diff --git a/app/client/backoff.go b/app/client/backoff.go
index cb285593..3186be76 100644
--- a/app/client/backoff.go
+++ b/app/client/backoff.go
@@ -7,6 +7,7 @@ import (
 	"github.com/gonitro/nitro/util/backoff"
 )
 
+//BackoffFunc for retry
 type BackoffFunc func(ctx context.Context, req Request, attempts int) (time.Duration, error)
 
 func exponentialBackoff(ctx context.Context, req Request, attempts int) (time.Duration, error) {
diff --git a/cspell.json b/cspell.json
new file mode 100644
index 00000000..cb398a93
--- /dev/null
+++ b/cspell.json
@@ -0,0 +1,8 @@
+{
+    "version": "0.1",
+    "words": [
+        "pgrpc",
+        "urfave",
+        "gonitro"
+    ]
+}
\ No newline at end of file
diff --git a/util/buf/buf.go b/util/buf/buf.go
index ebad4794..076d0b50 100644
--- a/util/buf/buf.go
+++ b/util/buf/buf.go
@@ -42,6 +42,7 @@ func (b *buffer) Close() error {
 	return nil
 }
 
+//New return a buffer pointer
 func New(b *bytes.Buffer) *buffer {
 	if b == nil {
 		b = bytes.NewBuffer(nil)
@@ -49,6 +50,7 @@ func New(b *bytes.Buffer) *buffer {
 	return &buffer{b}
 }
 
+//NewPool return a pool pointer
 func NewPool() *pool {
 	return &pool{
 		p: sync.Pool{