Axios w/ Cache Interceptors

axios-cache.js

const axios = require('axios');
const cache = require('memory-cache');

require('dotenv').config();

const api = new axios.create({
	baseURL: process.env.API_URL,
	headers: {
		'Authorization': 'Bearer ' + process.env.API_TOKEN
	}
});

api.interceptors.request.use(request => {
	// We only want to cache get requests
	if (request.method !== 'get') return request;

	const cached = cache.get(request.url);

	if (cached) {
		request.adapter = () => Promise.resolve({
			data: cached,
			status: 200,
			statusText: 'OK',
			headers: request.headers,
			config: request,
			request: request
		});

		return request;
	}

	return request;
});

api.interceptors.response.use(response => {
	if (response.config.method !== 'get') return response;

	// Cache responses in memory for 5 minutes
	cache.put(response.config.url, response.data, 5 * 60 * 1000);

	return response;
});

module.exports = api;