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Roman Arutyunyan 1e17ee9366 Resolver: per-request DNS server balancer.
Previously, a global server balancer was used to assign the next DNS server to
send a query to.  That could lead to a non-uniform distribution of servers per
request.  A request could be assigned to the same dead server several times in a
row and wait longer for a valid server or even time out without being processed.

Now each query is sent to all servers sequentially in a circle until a
response is received or timeout expires.  Initial server for each request is
still globally balanced.
2016-01-28 15:28:20 +03:00
auto Slice filter. 2015-12-07 16:30:48 +03:00
conf Added the REQUEST_SCHEME parameter. 2015-06-05 22:23:26 +03:00
contrib Contrib: add more directives to vim syntax. 2014-10-22 15:31:19 +02:00
docs nginx-1.9.10-RELEASE 2016-01-26 17:27:40 +03:00
misc Updated OpenSSL and PCRE used for win32 builds. 2015-12-07 20:09:34 +03:00
src Resolver: per-request DNS server balancer. 2016-01-28 15:28:20 +03:00