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reduce number of allocations in ScanForLinks #24

Merged
merged 2 commits into from
Jul 3, 2020
Merged

reduce number of allocations in ScanForLinks #24

merged 2 commits into from
Jul 3, 2020

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whyrusleeping
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@whyrusleeping
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improvement:

why@cassiopeia ~/c/cbor-gen (master)> go test ./testing -bench=BenchmarkLink
goos: linux
goarch: amd64
pkg: github.com/whyrusleeping/cbor-gen/testing
BenchmarkLinkScan-56    	  291818	      4642 ns/op	     772 B/op	      40 allocs/op

why@cassiopeia ~/c/cbor-gen (feat/reduce-scan-for-links-allocs)> go test ./testing -bench=BenchmarkLink
goos: linux
goarch: amd64
pkg: github.com/whyrusleeping/cbor-gen/testing
BenchmarkLinkScan-56    	  334290	      4159 ns/op	     707 B/op	      19 allocs/op
PASS
ok  	github.com/whyrusleeping/cbor-gen/testing	2.049s

@whyrusleeping whyrusleeping merged commit 1be7fe2 into master Jul 3, 2020
@whyrusleeping whyrusleeping deleted the feat/reduce-scan-for-links-allocs branch July 3, 2020 00:38
ianopolous
ianopolous reviewed Jul 3, 2020
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utils.go
}); err != nil {
return nil, err
}
const maxCidLength = 100
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Will this apply to embedded identity multihash links?

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@ianopolous yes, though only if youre using this method. Is that an issue? I guess we can make it a var instead of a const so you can tweak it in your own applications

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We only interact over the http api. So hopefully that doesn't affect us then? I can't think of a use case where it actually matters unless pinning could end up calling this to get links and then error?

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It looks like this library is used in go-ipfs indirectly through go-ipld-cbor: https://github.com/ipfs/go-ipld-cbor/blob/master/go.mod#L12

@ianopolous ianopolous mentioned this pull request Jul 9, 2020
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@aschmahmann aschmahmann mentioned this pull request Feb 18, 2021
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@ianopolous ianopolous ianopolous left review comments

@Stebalien Stebalien Stebalien approved these changes

@Kubuxu Kubuxu Awaiting requested review from Kubuxu

@magik6k magik6k Awaiting requested review from magik6k

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@whyrusleeping @ianopolous @Stebalien