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docs: Move faq entry to more appropriate resource docs

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James Shubin
2019-03-17 17:41:52 -04:00
parent 17602d7065
commit 65a66492f4
2 changed files with 17 additions and 17 deletions
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17
docs/faq.md
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@@ -222,23 +222,6 @@ starting up, and as a result, a default endpoint never gets added. The solution
is to either reconcile the mistake, and if there is no important data saved, you is to either reconcile the mistake, and if there is no important data saved, you
can remove the etcd dataDir. This is typically `/var/lib/mgmt/etcd/member/`. can remove the etcd dataDir. This is typically `/var/lib/mgmt/etcd/member/`.
### Why do resources have both a `Cmp` method and an `IFF` (on the UID) method?
The `Cmp()` methods are for determining if two resources are effectively the
same, which is used to make graph change delta's efficient. This is when we want
to change from the current running graph to a new graph, but preserve the common
vertices. Since we want to make this process efficient, we only update the parts
that are different, and leave everything else alone. This `Cmp()` method can
tell us if two resources are the same. In case it is not obvious, `cmp` is an
abbrev. for compare.
The `IFF()` method is part of the whole UID system, which is for discerning if a
resource meets the requirements another expects for an automatic edge. This is
because the automatic edge system assumes a unified UID pattern to test for
equality. In the future it might be helpful or sane to merge the two similar
comparison functions although for now they are separate because they are
actually answer different questions.
### Does this support Windows? OSX? GNU Hurd? ### Does this support Windows? OSX? GNU Hurd?
Mgmt probably works best on Linux, because that's what most developers use for Mgmt probably works best on Linux, because that's what most developers use for

17
docs/resource-guide.md
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@@ -754,6 +754,23 @@ Feel free to use this pattern if you're convinced it's necessary. Alternatively,
if you think I got the `Res` API wrong and you have an improvement, please let if you think I got the `Res` API wrong and you have an improvement, please let
us know! us know!
### Why do resources have both a `Cmp` method and an `IFF` (on the UID) method?
The `Cmp()` methods are for determining if two resources are effectively the
same, which is used to make graph change delta's efficient. This is when we want
to change from the current running graph to a new graph, but preserve the common
vertices. Since we want to make this process efficient, we only update the parts
that are different, and leave everything else alone. This `Cmp()` method can
tell us if two resources are the same. In case it is not obvious, `cmp` is an
abbrev. for compare.
The `IFF()` method is part of the whole UID system, which is for discerning if a
resource meets the requirements another expects for an automatic edge. This is
because the automatic edge system assumes a unified UID pattern to test for
equality. In the future it might be helpful or sane to merge the two similar
comparison functions although for now they are separate because they are
actually answer different questions.
### What new resource primitives need writing? ### What new resource primitives need writing?
There are still many ideas for new resources that haven't been written yet. If There are still many ideas for new resources that haven't been written yet. If