feat: Add Load Balancer Implementation and Example Code

[dongowu]

Motivation

Solution

1. Load Balancer Example
   • Demonstrates all 6 load balancing strategies:
     • Round Robin
     • Weighted Round Robin
     • P2C
     • Weighted Random
     • Least Connection
     • Response Time Weighted
   • Shows proper error handling and configuration
     
2. Testing Coverage
   • Unit tests for empty instance lists
   • Single instance scenarios
   • Multiple instance distribution
   • Weight-based selection verification
     

[PureWhiteWu]

Hi, thanks very much for your contribution!

These loadbalance algorithms are not verified in production by our team, and we are not so familiar with those algorithms, so we cannot guarantee performance and availability. So I think it's not suitable to merge this into Volo at this time.

But I think it's better to be maintained as a Volo ecological project under https://github.com/volo-rs.

If you are willing to maintain this under volo-rs, I can create a repo for you there.

What do you think?

Thanks again for your great contribution!

[dongowu]

您好，非常感谢您的贡献！

这些负载均衡算法尚未经过我们团队在生产环境中的验证，而且我们对这些算法也不太熟悉，因此无法保证其性能和可用性。因此，我认为目前还不适合将其合并到 Volo 中。

但我觉得还是作为Volo生态项目在https://github.com/volo-rs下维护比较好。

如果您愿意维护这个volo-rs，我可以在那里为您创建一个 repo。

你怎么认为？

再次感谢您的巨大贡献！

ok

[PureWhiteWu]

你好，我已经为你在 Volo-rs 下建好了仓库，并邀请你了 https://github.com/volo-rs/volo-loadbalance/invitations

[dongowu]

ok 我整理下代码