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e152f4002e
This PR improves the performance of `Headers.get` by using `Regex.test`
instead of `.exec`. Also replaced the `Map` used for caching with an
object which is a bit faster
**This patch**
```
cpu: 13th Gen Intel(R) Core(TM) i9-13900H
runtime: deno 1.36.1 (x86_64-unknown-linux-gnu)
benchmark time (avg) iter/s (min … max) p75 p99 p995
----------------------------------------------------------------------- -----------------------------
Headers.get 124.71 ns/iter 8,018,687.3 (115.11 ns … 265.66 ns) 126.05 ns 136.12 ns 142.37 ns
```
**1.36.1**
```
cpu: 13th Gen Intel(R) Core(TM) i9-13900H
runtime: deno 1.36.0 (x86_64-unknown-linux-gnu)
benchmark time (avg) iter/s (min … max) p75 p99 p995
----------------------------------------------------------------------- -----------------------------
Headers.get 218.91 ns/iter 4,568,172.3 (165.37 ns … 264.44 ns) 241.62 ns 260.94 ns 262.67 ns
```
```js
const headers = new Headers({
"Content-Type": "application/json",
"Date": "Thu, 10 Aug 2023 07:45:10 GMT",
"X-Deno": "Deno",
"Powered-By": "Deno",
"Content-Encoding": "gzip",
"Set-Cookie": "__Secure-ID=123; Secure; Domain=example.com",
"Content-Length": "150",
"Vary": "Accept-Encoding, Accept, X-Requested-With",
});
Deno.bench("Headers.get", () => {
headers.get("x-deno");
});
```
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||
|---|---|---|
| .. | ||
| broadcast_channel | ||
| cache | ||
| console | ||
| crypto | ||
| fetch | ||
| ffi | ||
| fs | ||
| http | ||
| io | ||
| kv | ||
| napi | ||
| net | ||
| node | ||
| tls | ||
| url | ||
| web | ||
| webidl | ||
| websocket | ||
| webstorage | ||