Added comments for better readability and fixed probabistic patterns

lib/types.go

@@ -5,6 +5,8 @@ import (
 	"time"
 )
 
+// PerformanceMetrics represents a thread-safe container for tracking
+// performance statistics during load testing
 type PerformanceMetrics struct {
 	Mu               sync.Mutex
 	TotalRequests    int32
@@ -15,12 +17,14 @@ type PerformanceMetrics struct {
 	ResponseCounters map[int]int32
 }
 
+// RequestError represents a detailed error that occurs during an HTTP request
 type RequestError struct {
 	Verb string
 	URL  string
 	Err  error
 }
 
+// RequestPattern defines the characteristics of requests to be sent during load testing
 type RequestPattern struct {
 	Verb       string
 	Percentage float64