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https://github.com/swashcap/fastify-als-demo
A demo with Fastify and Node.js's AsyncLocalStorage
https://github.com/swashcap/fastify-als-demo
fastify nodejs
Last synced: about 1 month ago
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A demo with Fastify and Node.js's AsyncLocalStorage
- Host: GitHub
- URL: https://github.com/swashcap/fastify-als-demo
- Owner: swashcap
- License: mit
- Created: 2020-05-04T16:51:54.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2022-03-26T15:44:43.000Z (over 2 years ago)
- Last Synced: 2023-04-01T03:28:59.561Z (over 1 year ago)
- Topics: fastify, nodejs
- Language: TypeScript
- Size: 452 KB
- Stars: 1
- Watchers: 2
- Forks: 0
- Open Issues: 6
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# fastify-als-demo
A demo with [Fastify](https://www.fastify.io) and Node.js's
[`AsyncLocalStorage`](https://nodejs.org/api/async_hooks.html#async_hooks_class_asynclocalstorage).
## Performance comparison:
Some basic metrics when running locally on the dev machine:
```shell
ab -n 1000 -c 10 "http://127.0.0.1:3000/"
```
### async-local-storage
* Maximum MEM (via `top`): 23M
* Requests (via `ab`):
```
Requests per second: 93.49 [#/sec] (mean)
Time per request: 106.967 [ms] (mean)
Time per request: 10.697 [ms] (mean, across all concurrent requests)
```
### logger-passing
* Maximum MEM (via `top`): 27M
* Requests (via `ab`):
```
Requests per second: 93.56 [#/sec] (mean)
Time per request: 106.880 [ms] (mean)
Time per request: 10.688 [ms] (mean, across all concurrent requests)
```
## Setup
With [Node.js](https://nodejs.org/en/) (>=14.1.x) and
[yarn](https://yarnpkg.com) (>=1.22.x) installed:
1. Install dependencies:
```shell
yarn
```
2. Build the project:
```shell
yarn build
```
3. Run the server:
```shell
yarn start
```
4. Send a request:
```shell
curl localhost:3000
{"data":{"mock":"mock"}}
```
You should see trace-able `requestId` properties on log events. For example,
with `yarn --silent start | jq`:
```shell
{
"level": 30,
"time": 1588610966799,
"pid": 5721,
"hostname": "swash.local",
"reqId": 1,
"req": {
"method": "GET",
"url": "/",
"hostname": "localhost:3000",
"remoteAddress": "127.0.0.1",
"remotePort": 54634
},
"requestId": "382a4b0b-fc29-4e12-9862-10bc300ce2bb",
"msg": "incoming request"
}
{
"level": 30,
"time": 1588610966902,
"pid": 5721,
"hostname": "swash.local",
"mockApi": "1.0.0",
"message": "end",
"requestId": "382a4b0b-fc29-4e12-9862-10bc300ce2bb"
}
{
"level": 30,
"time": 1588610966907,
"pid": 5721,
"hostname": "swash.local",
"reqId": 1,
"res": {
"statusCode": 200
},
"responseTime": 108.17437699995935,
"requestId": "382a4b0b-fc29-4e12-9862-10bc300ce2bb",
"msg": "request completed"
}
```