lhotari commented on code in PR #24423:
URL: https://github.com/apache/pulsar/pull/24423#discussion_r2370228406


##########
pulsar-broker-common/src/main/java/org/apache/pulsar/broker/ServiceConfiguration.java:
##########
@@ -919,6 +919,47 @@ The max allowed delay for delayed delivery (in 
milliseconds). If the broker rece
     )
     private int brokerMaxConnections = 0;
 
+    @FieldContext(
+        category = CATEGORY_POLICIES,
+        doc = "It relates to configuration \"WriteBufferHighWaterMark\" of 
Netty Channel Config. If the number of bytes"
+            + " queued in the write buffer exceeds this value, channel 
writable state will start to return \"false\"."
+    )
+    private int pulsarChannelWriteBufferHighWaterMark = 64 * 1024;
+
+    @FieldContext(
+        category = CATEGORY_POLICIES,
+        doc = "It relates to configuration \"WriteBufferLowWaterMark\" of 
Netty Channel Config. If the number of bytes"
+                + " queued in the write buffer is smaller than this value, 
channel writable state will start to return"
+                + " \"true\"."
+    )
+    private int pulsarChannelWriteBufferLowWaterMark = 32 * 1024;
+
+    @FieldContext(
+        category = CATEGORY_POLICIES,
+        doc = "If enabled, the channel will pause to deal with new request 
once the writer buffer is full, until it"
+                + " is changed to writable."
+    )
+    private boolean pulsarChannelPauseReceivingRequestsIfUnwritable = false;
+
+    @FieldContext(
+        category = CATEGORY_POLICIES,
+        doc = "After the connection is recovered from an unreadable state, the 
channel will be rate-limited for a"
+                + " period of time to avoid overwhelming due to the backlog of 
requests. This parameter defines how"
+                + " many requests should be allowed in the rate limiting 
period."
+
+    )
+    private int pulsarChannelRateLimitingRequestsAfterResumeFromUnreadable = 
1000;
+
+    @FieldContext(
+        category = CATEGORY_POLICIES,
+        doc = "After the connection is recovered from an unreadable state, the 
channel will be rate-limited for a"
+            + " period of time to avoid overwhelming due to the backlog of 
requests. This parameter defines how"
+            + " long the rate limiting should last, in seconds. Once the bytes 
that are waiting to be sent out"
+            + " reach the \"pulsarChannelWriteBufferHighWaterMark\", the timer 
will be reset. Setting a negative"
+            + " value will disable the rate limiting."
+    )
+    private int pulsarChannelRateLimitingSecondsAfterResumeFromUnreadable = 5;

Review Comment:
   milliseconds as an unit would provide better accuracy for later tuning. 
seconds might be too granular.



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