update documentation

Author: randilfernando

node/README.md

@@ -79,8 +79,11 @@ await channel.send({
     payload: 'Hello World' 
 });
 
-const reply = await channel.receive(); // You can still use receive() for single messages
-console.log('Reply:', reply.payload);
+// Reading messages (Async Iterator handles backpressure)
+for await (const msg of channel) {
+    console.log('Reply:', msg.payload);
+    if (msg.payload === 'Hello World') break; // Exit loop to close
+}
 
 await channel.close();
 ```
@@ -91,3 +94,13 @@ Remember to close the mesh connection when your application exits.
 ```typescript
 await mesh.close();
 ```
+
+### 6. Async Iterators (Backpressure)
+Mesh supports Async Iterators (`for await...of`) for consuming messages. This is the **recommended** way to read from a channel as it automatically handles backpressure: the sender will be slowed down if your processing loop is slower than the incoming data rate.
+
+```typescript
+for await (const msg of channel) {
+    await processMessage(msg);
+    // The next message is only requested after this line completes
+}
+```

python/README.md

@@ -88,8 +88,19 @@ channel = await mesh.service("target-service-name").request_channel("session-id-
 out_msg = Message(function_name="greet", payload="Hello World")
 await channel.send(out_msg)
 
-reply = await channel.receive()
-print(f"Reply: {reply.payload}")
+# Reading messages (Async Iterator handles backpressure)
+async for msg in channel:
+    print(f"Reply: {msg.payload}")
+    if msg.payload == "Hello World": break # Exit loop to close
 
 await channel.close()
 ```
+
+### 5. Async Iterators (Backpressure)
+Mesh supports Async Iterators (`async for ... in`) for consuming messages. This is the **recommended** way to read from a channel as it automatically handles backpressure.
+
+```python
+async for msg in channel:
+    await process_message(msg)
+    # The next message is consumed only after the loop body finishes
+```