Created
February 25, 2020 14:16
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Redis demo for use
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const express = require('express'); | |
const fetch = require('node-fetch'); | |
const redis = require('redis'); | |
const PORT = process.env.PORT || 5000; | |
const REDIS_PORT = process.env.PORT || 6379; | |
const client = redis.createClient(REDIS_PORT); | |
const app = express(); | |
// Set response | |
function setResponse(username, repos) { | |
return `<h2>${username} has ${repos} Github repos</h2>`; | |
} | |
// Make request to Github for data | |
async function getRepos(req, res, next) { | |
try { | |
console.log('Fetching Data...'); | |
const { username } = req.params; | |
const response = await fetch(`https://api.github.com/users/${username}`); | |
const data = await response.json(); | |
const repos = data.public_repos; | |
// Set data to Redis | |
client.setex(username, 3600, repos); | |
res.send(setResponse(username, repos)); | |
} catch (err) { | |
console.error(err); | |
res.status(500); | |
} | |
} | |
// Cache middleware | |
function cache(req, res, next) { | |
const { username } = req.params; | |
client.get(username, (err, data) => { | |
if (err) throw err; | |
if (data !== null) { | |
res.send(setResponse(username, data)); | |
} else { | |
next(); | |
} | |
}); | |
} | |
app.get('/repos/:username', cache, getRepos); | |
app.listen(5000, () => { | |
console.log(`App listening on port ${PORT}`); | |
}); |
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