gvisor.dev/gvisor@v0.0.0-20240520182842-f9d4d51c7e0f/images/benchmarks/node/index.js (about)

     1  const app = require('express')();
     2  const path = require('path');
     3  const redis = require('redis');
     4  const srs = require('secure-random-string');
     5  
     6  // The hostname is the first argument.
     7  const host_name = process.argv[2];
     8  
     9  var client = redis.createClient({host: host_name, detect_buffers: true});
    10  
    11  app.set('views', __dirname);
    12  app.set('view engine', 'hbs');
    13  
    14  app.get('/', (req, res) => {
    15    var tmp = [];
    16    /* Pull four random keys from the redis server. */
    17    for (i = 0; i < 4; i++) {
    18      client.get(Math.floor(Math.random() * (100)), function(err, reply) {
    19        tmp.push(reply.toString());
    20      });
    21    }
    22    res.render('index', {text: tmp});
    23  });
    24  
    25  /**
    26   * Securely generate a random string.
    27   * @param {number} len
    28   * @return {string}
    29   */
    30  function randomBody(len) {
    31    return srs({alphanumeric: true, length: len});
    32  }
    33  
    34  /** Mutates one hundred keys randomly. */
    35  function generateText() {
    36    for (i = 0; i < 100; i++) {
    37      client.set(i, randomBody(1024));
    38    }
    39  }
    40  
    41  generateText();
    42  app.listen(8080);