Popularity
0.5
Growing
Activity
2.8
Declining
2
1
1

Programming language: Go
License: MIT License
Tags: Utilities    

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README

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goctx

Get your context value faster

How to use

Replace

v := ctx.Value(key)

With

v := goctx.Value(ctx, key)

Benchmark

There will be little difference when there is only 1~2 context.WithXXX calls

With 5 context.WithXXX calls

BenchmarkValue/5/non_parallel/std-8 35313684 34.2 ns/op
BenchmarkValue/5/non_parallel/goctx-8 42801348 30.0 ns/op
BenchmarkValue/5/non_parallel/pure_map-8 16655377 72.8 ns/op
BenchmarkValue/5/parallel/std-8 168420460 7.09 ns/op
BenchmarkValue/5/parallel/goctx-8 185695462 6.35 ns/op
BenchmarkValue/5/parallel/pure_map-8 67944997 17.6 ns/op

With 20 context.WithXXX calls

BenchmarkValue/20/non_parallel/std-8 7137338 168 ns/op
BenchmarkValue/20/non_parallel/goctx-8 14623730 81.4 ns/op
BenchmarkValue/20/non_parallel/pure_map-8 5282458 235 ns/op
BenchmarkValue/20/parallel/std-8 42826857 27.9 ns/op
BenchmarkValue/20/parallel/goctx-8 79149823 15.1 ns/op
BenchmarkValue/20/parallel/pure_map-8 22206717 53.8 ns/op

As we can see from the benchmark test, the map implementation is slower than the standard one, so it is not recommended to use RegisterValueFunc to register a context value function, unless you do not want to see nested stack with Value method call (That's also the reason why RegisterValueFunc is kept even it is not fast)