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docs: add notes about pipelining #408

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Sep 6, 2020
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docs: add notes about pipelining #408

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docs: add notes about pipelining
ronag Sep 6, 2020
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9 changes: 6 additions & 3 deletions README.md
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Expand Up @@ -37,7 +37,8 @@ The benchmark is a simple `hello world` [example](benchmarks/index.js) without p
<a name='client'></a>
### `new undici.Client(url, opts)`

A basic HTTP/1.1 client, mapped on top a single TCP/TLS connection.
A basic HTTP/1.1 client, mapped on top a single TCP/TLS connection. Pipelining is disabled
by default.

`url` can be a string or a [`URL`](https://nodejs.org/api/url.html#url_class_url) object.
It should only include the protocol, hostname, and the port.
Expand Down Expand Up @@ -69,8 +70,10 @@ Options:
Default: `1e3` milliseconds (1s).

- `pipelining: Number`, the amount of concurrent requests to be sent over the
single TCP/TLS connection according to
[RFC7230](https://tools.ietf.org/html/rfc7230#section-6.3.2).
single TCP/TLS connection according to [RFC7230](https://tools.ietf.org/html/rfc7230#section-6.3.2).
Carefully consider your workload and environment before enabling concurrent requests
as pipelining may reduce performance if used incorrectly. Pipelining is sensitive
to network stack settings as well as head of line blocking caused by e.g. long running requests.
Default: `1`.

- `tls: Object|Null`, an options object which in the case of `https` will be passed to
Expand Down