title: address already in use with redis-server
body: <p>When running the redis server, it shows address already in use
  This is the stacktrace:</p>
  
  <pre><code>45546:C 12 Jul 2019 10:04:41.888 # oO0OoO0OoO0Oo Redis is starting oO0OoO0OoO0Oo
  45546:C 12 Jul 2019 10:04:41.888 # Redis version=5.0.5, bits=64, commit=00000000, modified=0, pid=45546, just started
  45546:C 12 Jul 2019 10:04:41.888 # Warning: no config file specified, using the default config. In order to specify a config file use redis-server /path/to/redis.conf
  45546:M 12 Jul 2019 10:04:41.889 * Increased maximum number of open files to 10032 (it was originally set to 256).
  45546:M 12 Jul 2019 10:04:41.890 # Could not create server TCP listening socket *:6379: bind: Address already in use
  </code></pre>