index.ts

import { DataAccessLayer } from "./DataAccessLayer";
import { Service } from "./Service";
import { CacheEject, CacheFlush, CacheKeys } from "./cached";

const service = new Service(new DataAccessLayer());

const id1 = service.register({ firstName: "Chris", lastName: "Bauer" });
const id2 = service.register({ firstName: "John", lastName: "Tomson" });
const id3 = service.register({ firstName: "Tom", lastName: "Johnson" });

let tries = 0;
const getAllUsersInfo = () => {
	tries++;
	console.log(`/***************************************************`);
	console.log(`** Execution: ${tries}`);
	console.log(`***************************************************/`);
	console.log(service.getUserInfo(id1));
	console.log(service.getUserInfo(id2));
	console.log(service.getUserInfo(id3));
};

getAllUsersInfo();

//Check how much faster the cached DAL code runs!
getAllUsersInfo();

CacheFlush();
//Slow again!
getAllUsersInfo();

const keys = CacheKeys();
CacheEject(keys[1]);
//id2 will run slower because we've ejected them from the cache
getAllUsersInfo();