I need to implement a kind of weighted round robin distribution
for HTTP ICS-based reverse-proxy. I've found some info about
packets distribution but neither about users (sessions) distribution.
The difference is that, according to the algorithms, packets can be
left in a queue (so load balancing is achieved), while users should not.
The given data is a list of N servers and their relative weights W[n].
Could someone suggest a link for appropriate algorithm?
I tried to use the well-known round robin modification of constructing
a virtual cicrle, divided into N sectors, each of which is proportional
to corresponding server weight. But it may produce very uneven
distribution in time, that is for a period it draws a series with some
servers probabilities far from their weights, then it begins to draw
a series with other servers probabilities far from their weights.
I could show an example, but it's not necessary, I think.
For a large period the mean values approximate to the weights.
But I'd like to have a short time smooth distribution.
Thanks in advance.
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