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| author | Roman Arutyunyan <arut@nginx.com> | 2016-01-28 15:28:20 +0300 |
|---|---|---|
| committer | Roman Arutyunyan <arut@nginx.com> | 2016-01-28 15:28:20 +0300 |
| commit | c8c44f74783d699474b32a59f525a3ef4dfbecf5 (patch) | |
| tree | 865930ecccbf3fdd22f9d698fbf579ea37096dbb /src/os/unix/ngx_udp_recv.c | |
| parent | 1945fff7bfee1eef23933faa0ccfbe05445dcfe1 (diff) | |
| download | nginx-c8c44f74783d699474b32a59f525a3ef4dfbecf5.tar.gz nginx-c8c44f74783d699474b32a59f525a3ef4dfbecf5.tar.bz2 | |
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.
Diffstat (limited to 'src/os/unix/ngx_udp_recv.c')
0 files changed, 0 insertions, 0 deletions