title: Best Database for Node js Web App and simple data structure
body: <p>I am planning to make this relatively simple, single-task web-app that is node js based and need help with chosing the best database for my application stack - a field where I have only limited theoretical knowledge and almost no practical experience. </p>
  
  <p><strong>Usage:</strong> The user of the web-app fills out a simple form at the front-end and according to that information a database-query is formed on the server, some calculations made and the result is returned to the user at the front-end - that's it.</p>
  
  <ul>
  <li><strong>User input never changes database</strong> - the database from user
  perspective is read-only.  </li>
  <li><strong>Data structure is very simple</strong> -> "columns" of "timestamp -
  numeric value"-entries.    </li>
  <li><strong>No relations</strong> (other than the "column-relation") between sets, other than that the entries from a specific "column" will always be read out in    sequence (as the calculationsspan over a certain time-period).</li>
  <li><strong>New data</strong> is only appended to the database once a day (one entry per "column"), existing
  entries will never be changed.    </li>
  <li><strong>Data amount:</strong> 10 - 20 columns with 2000 - 4000 " timestamp - numeric value "- data entries.</li>
  </ul>
  
  <p><strong>Which database would work best for that project?</strong></p>
  
  <p>I read quite a bit about the differences, pros and cons of relational and non-relational databases, but I have too little experience to tell which is suited. Somehow I sense that non-relational is the solution. Basically, what I have as data could be put in and read from an excel sheet, but I hear that's just not how you do it.<br>
  <strong>MongoDB</strong> seems to be popular in combination with node js but then lots of authors state that it loses data over time, which sounds scary. Some authors go as far as to call it a hype and recommend against using it at all. </p>
  
  <p>Thank you!</p>