Load Balancing Strategies and Configuration Details

Mon, 01 Jan 0001 00:00:00 +0000

Dubbo-go has a built-in client-based load balancing mechanism. Below are the currently supported load balancing algorithms. Combined with the automatic service discovery mechanism mentioned above, the consumer side will automatically use the Weighted Random LoadBalance strategy for invocation.

If you want to adjust the load balancing algorithm, here are the built-in load balancing strategies in the Dubbo framework:

Algorithm	Features	Remarks	Configuration Value
Weighted Random LoadBalance	Weighted Random	Default algorithm, same default weight	random (default)
RoundRobin LoadBalance	Weighted Round Robin	Inspired by Nginx’s smooth weighted round robin algorithm, same default weight	roundrobin
LeastActive LoadBalance	Least Active First + Weighted Random	Based on the idea that those who can do more should work more	leastactive
Consistent Hash LoadBalance	Consistent Hash	Deterministic input, deterministic providers, suitable for stateful requests	consistenthashing
P2C LoadBalance	Power of Two Choices	Randomly selects two nodes and continues to select the one with fewer “connections.”	p2c
Interleaved Weighted Round Robin	A weighted round robin algorithm	https://en.wikipedia.org/wiki/Weighted_round_robin#Interleaved_WRR	interleavedweightedroundrobin
Alias Method Round Robin		https://en.wikipedia.org/wiki/Alias_method	aliasmethod

Global Configuration

The default strategy of the Dubbo framework is random weighted random load balancing. To adjust the strategy, simply set the corresponding value for loadbalance. Refer to the table at the top of the document for different load balancing strategy values.

Load Balancing on Apache Dubbo

Load Balancing Strategies and Configuration Details

Global Configuration