docs(queue): update readme

README.md

@@ -19,9 +19,8 @@ Pure Golang errors library with stacktrace support (for wrapping and formatting
 
 ## queue
 
-A Pure Golang thread-safe and unlimited-size generics in-memory message queue implementation
-that supports async enqueue and blocking dequeue. \
-It's alternative way to communicate between goroutines compared to `channel`
+A Pure Golang low-level and simple queue library for thread-safe and unlimited-size generics in-memory message queue implementation (async enqueue and blocking dequeue supports).\
+The alternative way to communicate between goroutines compared to `channel`
 
 [See here](queue/README.md).
 

queue/README.md

@@ -12,6 +12,11 @@ It's alternative way to communicate between goroutines compared to `channel`
 >
 > And if your use-case requires a limited-size queue and blocking enqueue, please use a channel instead.
 
+This package is low-level and simple queue library, it's not a full-featured message queue. \
+You can build any advanced message queue on top of this queue (use this queue for under the hood)
+like an advance message queue like a single-producer with multiple-consumers queue,
+broadcast system, multiple topics queue or any other use-cases.
+
 ## Installation
 
 ```shell

queue/queue.go

@@ -3,6 +3,7 @@
 // It's alternative way to communicate between goroutines compared to `channel`.
 // The implementation of this in-memory message queue uses sync.Cond instead of channel.
 //
+// This queue is low-level and simple library, it's not a full-featured message queue.
 // If your use-case requires a limited-size queue and blocking enqueue, please use a channel instead.
 // For advanced use-cases like distributed queue, persistent message please use a message broker like Kafka, RabbitMQ, NATES or NSQ instead.
 //