refactor(balancer) drop the orderlist property #2748
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kong/kong.lua
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| @@ -308,6 +308,7 @@ function Kong.balancer() | |||
| current_try.port = addr.port | |||
|
|
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| -- set the targets as resolved | |||
| ngx.log(ngx.DEBUG, "setting address (try ", addr.try_count, "): ",addr.ip,":",addr.port) | |||
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perf: on this hot code path, let's cache ngx.log and ngx.DEBUG which imply global accesses.
style: it seems like we are going over the 80 chars limit and missing a few spaces for readability. Let's use the following form instead:
ngx.log(ngx.DEBUG, "setting address (try ", addr.try_count, "): ",
addr.ip, ":", addr.port)(with globals caching ofc)
| @@ -167,7 +186,7 @@ dao_helpers.for_each_dao(function(kong_config) | |||
| assert.are.equal(requests/2, count1) | |||
| assert.are.equal(requests/2, count2) | |||
| end) | |||
| it("adding a target", function() | |||
| it("adding a target #only", function() | |||
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| @@ -27,7 +27,7 @@ dependencies = { | |||
| "luacrypto == 0.3.2", | |||
| "luasyslog == 1.0.0", | |||
| "lua_pack == 1.0.5", | |||
| "lua-resty-dns-client == 0.6.0", | |||
| "lua-resty-dns-client == 0.6.1", | |||
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Should we bump this to 0.6.2 now? Considering master is already there.
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This removes the `orderlist` property from the balancer entity. Due to a different implementation in the dns library, it is no longer required. from #2748
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This removes the `orderlist` property from the balancer entity. Due to a different implementation in the dns library, it is no longer required. from #2748
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This removes the orderlist property from the balancer entity. Due to a different implementation in the dns library, it is no longer required.
Reason:
Because multiple Kong nodes need the exact same ring-balancer, the orderlist was used to make sure they all used the same random data to set up the balancer.
This has now been replaced by using a separate randomizer in the dns library, which always will be seeded again, and with the same seed. This causes the exact same random set of numbers to be generated. This works because there is no need for uniqueness, there is only need for distribution of the data.