/Wiki/sources/honojs__hono/2026/https-hono-dev-llms-full-txt-usage-492647be7ffd-usage-s0309-c0000.md
Usage - hono-docs
Usage Source evidence: /Sources/raw/honojs hono/honojs hono.md Canonical citation: https://hono.dev/llms full.txt usage Summary js // Specify the variable ty...
Usage
Source evidence: /Sources/raw/honojshono/honojshono.md Canonical citation: https://hono.dev/llms-full.txt#usage
Summary
## Content
```js
// Specify the variable types to infer the `c.get('metric')`:
type Variables = TimingVariables
const app = new Hono<{ Variables: Variables }>()
// add the middleware to your router
app.use(timing());
app.get('/', async (c) => {
// add custom metrics
setMetric(c, 'region', 'europe-west3')
// add custom metrics with timing, must be in milliseconds
setMetric(c, 'custom', 23.8, 'My custom Metric')
// start a new timer
startTime(c, 'db');
const data = await db.findMany(...);
// end the timer
endTime(c, 'db');
// ...or you can also just wrap a Promise using this function:
const data = await wrapTime(c, 'db', db.findMany(...));
return c.json({ response: data });
});
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