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Nikita Mikhaylov 2020-06-17 13:33:35 +03:00 committed by GitHub
parent 9386478a77
commit 9b88065e77
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1 changed files with 12 additions and 0 deletions
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12
src/Client/ConnectionPoolWithFailover.cpp
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@ -74,6 +74,12 @@ IConnectionPool::Entry ConnectionPoolWithFailover::get(const ConnectionTimeouts
if (last_used >= nested_pools.size())
last_used = 0;
++last_used;
/* Consider nested_pools.size() equals to 5
* last_used = 1 -> get_priority: 0 1 2 3 4
* last_used = 2 -> get_priority: 5 0 1 2 3
* last_used = 3 -> get_priority: 5 4 0 1 2
* ...
* */
get_priority = [&](size_t i) { ++i; return i < last_used ? nested_pools.size() - i : i - last_used; };
break;
}
@ -190,6 +196,12 @@ std::vector<ConnectionPoolWithFailover::TryResult> ConnectionPoolWithFailover::g
if (last_used >= nested_pools.size())
last_used = 0;
++last_used;
/* Consider nested_pools.size() equals to 5
* last_used = 1 -> get_priority: 0 1 2 3 4
* last_used = 2 -> get_priority: 5 0 1 2 3
* last_used = 3 -> get_priority: 5 4 0 1 2
* ...
* */
get_priority = [&](size_t i) { ++i; return i < last_used ? nested_pools.size() - i : i - last_used; };
break;
}