puppet-tripleo/releasenotes/notes/haproxy-leastconn-overrides...

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---
upgrade:
- |
Since Heat API can be given longrunning API requests its backends will
become load-balanced based on LRU 'leastconn' algorithm and its sessions
will also benefit from the TCP-keepalive feature of HAProxy.
Some of the other services with the longrunning requests notion will start
using the 'leastconn' LRU LB as well.