weight and balancing in upstream proxy

[Frank Liu]

Hi,

How does nginx balances traffic to upstream with different weight? If I
have 3 servers in upstream, with weight 1, 2, 4, assuming all are healthy,
will nginx send traffic to server 1, 2, 3, 2, 3, 3, 3 or 1, 2, 2, 3, 3, 3,
3? If I have two servers with both weight 50, will nginx will 50 requests
to server 1, and then 50 to server 2, or will it calculate the ration to be
1:1 and send one after another?

Thanks!
Frank
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