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by BlackFly 2540 days ago
I (and seemingly other people) consider https://www.techempower.com/benchmarks to be a good set of performance benchmarks for use cases many people around here would be facing. I guess they haven't been updated in nearing a year though. Go does reasonably well but apparently gets beat by Java.

More generally. I like the idea of community driven benchmarks where each community tries to make representative, performant samples to realistic problems. All too often you get an expert in one language making a benchmark against a language they are not experienced with and getting really improper results.
2 comments
jnordwick 2540 days ago
I don't do any a lot web stuff but most of my go code is quick hacks for data analysis or display but this is still really interesting.

I had a feeling go was slow, but I didn't expect such poor performance numbers. Some of that is probably the heavy reliance in reflection. For example they json parsing you need to go to the bottom of the list to find a go program, and go's json library makes extensive use of reflection and tags to guide the parsing.

It is somewhat ironic that go's big feature was AOT compilation static type checking, but it seems to immediately devolving into reflection and parsing tag key value strings to do anything. I had a typo on one of those they other day and could find the bug for an hour.

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fwip 2540 days ago
You can use alternative packages for when you need to do things more quickly. For JSON, check out fastjson, easyjson, gojay, and more.

In real code that I write, most projects never import reflect. Sometimes I import it in tests.

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apta 2539 days ago
These are newer results[1]

golang ranks 108 and 121 in the plaintext and JSON benchmarks, which is quite abysmal.

[1] https://www.techempower.com/benchmarks/#section=test&runid=b...

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pkroll 2538 days ago
The page you link to [1] shows Go at 9th for Plaintext (87.9% of the leader), 21st for JSON (96.8% of the leader). Which is still not ideal, but is a long way from abysmal.

[1] https://www.techempower.com/benchmarks/#section=test&runid=b...

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apta 2538 days ago
Those are using "fasthttp"[1], which one should be very cautious when using[2], as it is not standard and resorts to hacks to implement.

[1] https://github.com/valyala/fasthttp

[2] https://docs.google.com/presentation/d/e/2PACX-1vTxoBN41dYFB...

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