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A modern runtime for JavaScript and TypeScript.
https://deno.com/
0981aefbdc
Fixes: #20569 by introducing a custom replacement for the tokio mpsc channel that is byte-size backpressure-aware. Using the testcase in the linked bug, we see all the small writes aggregated into a single packet and HTTP frame. ``` 10:39 $ nc localhost 8000 GET / HTTP/1.1 HTTP/1.1 200 OK content-type: text/plain vary: Accept-Encoding transfer-encoding: chunked date: Tue, 19 Sep 2023 16:39:13 GMT A 0 1 2 3 4 ``` This patch: ``` Running 10s test @ http://localhost:8080/ 2 threads and 10 connections Thread Stats Avg Stdev Max +/- Stdev Latency 157.47us 194.89us 9.53ms 98.97% Req/Sec 31.37k 1.56k 34.73k 85.15% 630407 requests in 10.10s, 73.35MB read Requests/sec: 62428.12 Transfer/sec: 7.26MB ``` main: ``` Running 10s test @ http://localhost:8080/ 2 threads and 10 connections Thread Stats Avg Stdev Max +/- Stdev Latency 343.75us 200.48us 10.41ms 98.25% Req/Sec 14.64k 806.52 16.98k 84.65% 294018 requests in 10.10s, 39.82MB read Requests/sec: 29109.91 Transfer/sec: 3.94MB ``` --------- Co-authored-by: Bert Belder <bertbelder@gmail.com> |
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| runtime | ||
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| test_napi | ||
| test_util | ||
| tools | ||
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| .rustfmt.toml | ||
| Cargo.lock | ||
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| LICENSE.md | ||
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Deno
Deno is a simple, modern and secure runtime for JavaScript and TypeScript that uses V8 and is built in Rust.
Features
- Secure by default. No file, network, or environment access, unless explicitly enabled.
- Provides
web platform functionality and APIs,
e.g. using ES modules, web workers, and
fetch(). - Supports TypeScript out of the box.
- Ships only a single executable file.
- Built-in tooling including
deno test,deno fmt,deno bench, and more. - Includes a set of reviewed standard modules guaranteed to work with Deno.
- Supports npm.
Install
Shell (Mac, Linux):
curl -fsSL https://deno.land/install.sh | sh
PowerShell (Windows):
irm https://deno.land/install.ps1 | iex
Homebrew (Mac):
brew install deno
Chocolatey (Windows):
choco install deno
Scoop (Windows):
scoop install deno
Build and install from source using Cargo:
# Install the Protobuf compiler
apt install -y protobuf-compiler # Linux
brew install protobuf # macOS
# Build and install Deno
cargo install deno --locked
See deno_install and releases for other options.
Getting Started
deno run https://deno.land/std/examples/welcome.ts
Or setup a simple HTTP server:
Deno.serve((_req) => new Response("Hello, World!"));
Additional Resources
- The Deno Manual is a great starting point for additional examples, setting up your environment, using npm, and more.
- Runtime API reference documents all APIs built into Deno CLI.
- Deno Standard Modules do not have external dependencies and are reviewed by the Deno core team.
- deno.land/x is the registry for third party modules.
- Blog is where the Deno team shares important product updates and “how to”s about solving technical problems.
Contributing
We appreciate your help!
To contribute, please read our contributing instructions.