sbetter_server
with
approximate queue sojourn times for use with the sbetter
load balancer.
Behaviours: sbroker_meter.
See also: sbetter, sbetter_server.
Registers the process with and updates the sbetter_server
with
approximate queue sojourn times for use with the sbetter
load balancer.
sbetter_meter
can be used as the sbroker_meter
in a sbroker
or
a sregulator
. Its argument is of the form:
{AskUpper :: non_neg_integer(), AskRUpper :: non_neg_integer(), Update :: pos_integer()}.
AskUpper
is the maximum ask
sojourn time and AskRUpper
is the maximum
ask_r
sojourn time that will be updated to the sbetter_server
for use
with sbetter
. If a match doesn't occur on the sbroker
or sregulator
the
approximate sojourn time will increase unbounded for one of the two queues.
Limiting this value prevents the situation where one process becomes stuck as
the "worst" option because it hasn't matched for the longest when the
processes' queues would be equivalently "bad".
For example if using the sbroker_timeout_queue
with timeout time of 5000
,
then all requests are dropped after 5000
and so become approximately
equivalent once sojourn time is 5000
.
Update
is the update interval in milli_seconds
when the process is idle.
Generated by EDoc, Sep 29 2016, 17:17:28.