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# Benchmarking `node-http-proxy`
The long-term goal of these scripts and documentation is to provide a consistent and well understood benchmarking process for `node-http-proxy` so that performance does not degrade over time. They were initially created to compare the performance of `v0.10.3` and `v1.0.0` (which was a significant rewrite).
## Pre-requisites
All benchmarking shall be done with [wrk](https://github.com/wg/wrk) which _is the same tool used for performance testing by the node.js core team._ **Make sure you have `wrk` installed before continuing**.
```
$ wrk
Usage: wrk <options> <url>
Options:
-c, --connections <N> Connections to keep open
-d, --duration <T> Duration of test
-t, --threads <N> Number of threads to use
-s, --script <S> Load Lua script file
-H, --header <H> Add header to request
--latency Print latency statistics
--timeout <T> Socket/request timeout
-v, --version Print version details
Numeric arguments may include a SI unit (1k, 1M, 1G)
Time arguments may include a time unit (2s, 2m, 2h)
```
## Benchmarks
1. [Simple HTTP benchmark](#simple-http)
### Simple HTTP
_This benchmark requires three terminals running:_
1. **A proxy server:** `node benchmark/scripts/proxy.js`
2. **A target server:** `node benchmark/scripts/hello.js`
3. **A wrk process:** `wrk -c 20 -d5m -t 2 http://127.0.0.1:8000`
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